高考英语从句的讲解和例子_高考从句题型

1.高考定语从句

2.高考英语从句选择题

3.几道高考从句语法相关题目,高分悬赏

4.高考英语语法:高中英语语法-定语从句的种类和用法

5.高考英语语法复习系列讲座-名词性从句

6.高中宾语从句详细用法和高考宾语从句专项练习

《高中英语语法-定语从句》由英语我整理,更多请访问:。本内容整理时间为05月12日，如有任何问题请联系我们。

定语从句

(一)定语从句一般由关系代词和关系副词引导

1、关系代词:who, whom, whose, which, that, as

2、关系副词:when, where, why

关系代词和关系副词必须位于从句之首,主句先行词之后,起着连接先行词和从句的作用, 同时在从句中又充当句子成分。

e.g. She is the girl who sings best of all.(关系代词who在从句中作主语)

The comrade with whom I came knows French.(whom在从句中作介词with的宾语)

3、关系代词和关系副词的用法:1)当先行词为人时用who 作主语,whom作宾语;2)当先行词为物或整个句子时用which ,可作主语或宾语;3)先行词为人、物时用that ,可作主语或宾语;4)whose用作定语,可指人或物;5)关系副词when(指时间,在定语从句中作时间状语,where(指地点,在定语从句中作地点状语),why(指原因,在定语从句中作原因状语)。

(二)限制性定语从句与非限制性定语从句

1、限制性定语从句:从句与主句关系密切,去掉从句,主句意义不完整,甚至不合逻辑。

e.g. I was the only person in our office who was invited.(去掉定语从句,意思就不完整)

2、非限制性定语从句:从句对先行词关系不密切,去掉定从句,意思仍然完整。形式上用逗号隔开,不能that用引导。

e.g. Tom's father, who is over sixty, still works hard day and night.(who引导非限制性定语从句,整个句子可分成两句来翻译)

(三)使用定语从句时特别注意的几个问题

1、that与which的区别。

1)用that而不用 which的情况:①先行词为不定代词all, anything, nothing, ?;②先行词有最高级修饰,有序数词修饰;③先行词有only, very, any等词修饰;④先行词既有人又有物时。

e.g. There is nothing that can prevent him from doing it. 没有什么能阻止他不干那件事。

The first place that they visited in Guilin was Elephant Trunk Hill. 在桂林他们所参观的第一个地方是象鼻山。

This is the best film that I have ever seen. 这部**是我看过的最好的一部。

Mr Smith is the only foreigner that he knows. 史密斯先生是他认识的唯一的外国人。

2)用which而不用 that的情况:①引导非限制性定语从句;②代表整个主句的意思;③介词 + 关系代词。

e.g. He had failed in the maths exam, which made his father very angry. 他数学考试没有及格,这使他的父亲很生气。

This is the room in which my father lived last year. 这是父亲去年居住过的房子。

3)as引导定语从句时的用法

①as引导限制性定语从句通常用于the same ? as, such ? as结构中。

e.g. I want the same shirt as my friend's. 我要一件跟我朋友一样的衬衫。

Such machines as are used in our workshop are made in China. 我们车间使用的这种机器是中国制造的。

②as引导非限制性定语从句既可放在主句之前,也可放在主句之后,用来修饰整个句子。通常用下列句型:as is known to all, as is said, as is reported, as is announced, as we all know, as I expect 等。

e.g. As I expected, he got the first place again in this mid-term examination. 正如我所预料的那样,他在这次期中考试中又获得了第一名。

3)as 引导非限制性定语从句时与which的区别

①当主句和从句语义一致时,用as;反之,用which来引导非限制性定语从句。

e.g. He made a long speech, as we expected.

He made a long speech, which was unexpected.

②当非限制定语从句为否定时,常用which引导。

e.g. Tom drinks a lot every day, which his wife doesn't like at all.

2. 关系代词在从句中作主语时,从句的谓语动词单数还是用复数应由先行词决定。

e.g. The man who lives downstairs speaks English fluently. 住在楼下的那个人英语说得很流利。

The students who are in Grade Three are going to climb the hill tomorrow.

3. 定语从句有时不直接紧靠先行词,中间由一个定语、状语或谓语隔开。

e.g. There is an expression in his eyes that I can't understand.

4. 引导定语从句的关系副词有时可以用"介词 + which"来代替。

e.g. October 1, 1949 was the day on which ( = when ) the People's Republic of China was founded.

5. 当定语从句中谓语动词是带介词或副词的固定短语动词时,短语动词的各个固定部分不要拆开。

e.g. The sick man whom she is looking after is her father.

6. 介词在关系代词前,只能用which和whom,且不能省略;介词在句尾,关系代词可有which, that, whom, 口语中也可用who,且可省略。

e.g. The man (whom/ who/ that) you were talking about has come to school.

练习、定语从句

一、把下列每对句子合并成含有定语从句的主从复合句:

1. The fan is on the desk. You want it.

2. The man is in the next room. He brought our textbooks here yesterday.

3. The magazine is mine. He has taken it away.

4. The students will not pass the exam . They don't study hard.

5. The woman is our geography teacher. You saw her in the park.

6. The letter is from my sister. I received it yesterday.

7. The play was wonderful. We saw it last night.

8. The train was late. It was going to Nanning.

9. The boy is my brother. He was here a minute ago.

10. The tree is quite tall. He is climbing it.

11. Here is the girl. Her brother works in this shop.

12. That's the child. We were looking at his drawing just now.

13. This is the boy. His sister is a famous singer.

14. I want to talk to the boys. Their homework haven't been handed in.

15. Is that the woman? Her daughter is in my class.

16. He used to live in a big house. In front of it grew many banana trees.

17. They passed a factory. At the back of the factory there were rice fields.

18. The soldier ran to the building. On the top of it flew a flag.

19. In the evening they arrived at a hill. At the foot of the hill there was a temple.

20. She came into a big room. In the middle of it stood a large table.

二、根据句子意思,在第一个空白处填入介词,在第二个填入关系代词whom或which:

1. The person ________ ________ I spoke just now is the manager that I told you about.

2. The pencil ________ ________ he was writing broke.

3. Wu Dong, ________ ________ I went to the concert, enjoyed it very much.

4. The two things ________ ________ Marx was not sure were the grammar and some of the idioms of English.

5. Her bag, ________ ________ she put all her books, has not been found.

6. The stories about the Long March, ________ ________ this is one example, are well written.

三、选择填空:

1. The man ____ visited our school yesterday is from London.

A. who B. which C. whom D. when

2. The woman ____ is talking to my mother is a friend of hers.

A. whose B. who C. whom D. which

3. Because of my poor memory, all ____ you told me has been forgotten.

A. that B. which C. what D. as

4. Do you remember those days ____ we spent along the seashore very happily?

A. when B. where C. which D. who

5. Tom did not take away the camera because it was just the same camera ____ he lost last week.

A. which B. that C. whom D. as

6. Those ____ want to go please sign their names here.

A. whom B. which C. who D. when

7. Where is the man ____ I met this morning?

A. when B. where C. which D. who

8. Who is the woman ____ is sweeping the floor over there?

A. who B. / C. that D. when

9. The man ____ you talked just now is a worker.

A. who B. whom C. to whom D. to who

10. The man ____ you are going to make friends is my father's neighbour.

A. with whom B. when C. to whom D. which

11. The doctor ____ is leaving for Africa next month.

A. the nurse is talking to him B. whom the nurse is talking

C. the nurse is talking to D. who the nurse is talking

12. The man ____ around our school is from America.

A. which you showed B. you showed him C. you showed D. where you showed

13. He talked about a hero ____ no one had ever heard.

A. of whom B. from whom C. about that D. who

14. In fact the Swede did not understand the three questions ____ were asked in French.

A. where B. who C. in which D. which

15. Have you read the book ____ I lent to you?

A. that B. whom C. when D. whose

16. Finally, the thief handed over everything ____ he had stolen to the police.

A. that B. which C. whatever D. all

17. The foreign guests, ____ were government officials, were warmly welcomed at the airport.

A. most of them B. most of that C. most of whom D. most of those

18. This is the very letter ____came last night.

A. who B. which C. that D. as

19. I know only a little about this matter; you may ask ____ knows better than I.

A. whoever B. whomever C. anyone D. the one

20. This is the school ____ we visited three days ago.

A. where B. / C. when D. what

21. This is the factory ____ we worked a year ago.

A. where B. that C. which D. on which

22. Nearby were two canoes ____ they had come to the island.

A. which B. in which C. that D. /

23. Jack is pleased with ____ you have given him and all ____ you have told him.

A. that, what B. what, that C. which, what D. that, which

24. Do you work near the building ____ colour is yellow?

A. that B. which C. its D. whose

25. In the dark street, there wasn't a single person ____ she could turn for help.

A. whom B. who C. to whom D. form whom

26. Is this school ____ we visited three years ago?

A. the one B. which C. that D. where

27. Is this the school ____ we visited three years ago?

A. the one B. where C. in which D. /

28, How many students are there in your class ____ homes are in the country?

A. whose B. who C. whom D. which

29. Alice received an invitation from her boss, ____ came as a surprise.

A. it B. which C. that D. he

30. The train was crowded and I had to get into a carriage ____ already seven other people.

A. when there were B. which there were C. that there were D. where there were

31. I live in the house ____ windows face south.

A. which B. whose C. where D. in that

32. ---- What game is popular with them? ---- The ____ most is tennis.

A. game they like it B. game they like C. best game they like D. best game they like it

33. They stayed with me three weeks, ____ they drank all the wine I had.

A. which B. which time C. during which time D. during which

34. The room ____ Mr White lives is not very large.

A. that B. which C. where D. when

35. Don't forget the day ____ you were received into the Youth League.

A. when B. that C. at which D. where

36. I've finished writing the novel, ____ is to be published next month.

A. that B. what C. which D. when

37. He returned home safe and sound after a fierce battle, ____ was unexpected.

A. which B. as C. that D. it

38. ____ we is known to all, English is not very difficult to learn.

A. What B. As C. That D. Which

39. The old man had three sons, all of ____ died during World War Ⅱ.

A. whose B. that C. whom D. who

40. I have bought two pens, ____ write well.

A. none of which B. neither of which C. both of which D. all of which

41. Do you know the reason ____ she has changed her mind?

A. why B. which C. for that D. of which

42. He failed in the exam, ____ proves that he wasn't working hard enough.

A. which B. what C. it D. that

43. During the week ____ he tried to collect materials for his article.

A. following B. followed C. to follow D. that followed

44. ____ was expected, he succeeded in the exam.

A. It B. Which C. As D. That

45. He studied hard and later became a well-known writer, ____ his father expected.

A. that was what B. what was that C. and which was D. which was what

46. We should read such books ____ will make us better and wiser.

A. when B. as C. whose D. what

47. You must show my wife the same respect ____ you show me.

A. when B. as C. whose D. what

48. He is absent ____ is often the case.

A. what B. which C. who D. as

49. It is the first time ____ I have come to your city.

A. that B. which C. what D. when

50. Who ____ has the same idea as it will do it in this way.

A. who B. that C. whom D. which

51. I shall never forget those years ____ I lived in the country with the farmers, ____ has a great effect on my life.

A. that, which B. when, which C. which, that D. when, who

52. This is the only book ____ I can find.

A. that B. which C. it D. with which

53. I don't like ____ you speak to her.

A. the way B. the way in that C. the way which D. the way of which

54. That is one of those books that ____ worth reading.

A. is B. are C. has D. have

55. This is the only one of the students whose handwriting ____ the best.

A. is B. are C. has D. have

56. There was ____ to prevent the accident.

A. something could do B. anything we could do

C. nothing we couldn't do D. nothing we could do 《高中英语语法-定语从句》由英语我整理,更多请访问: style="font-size: 18px;font-weight: bold;border-left: 4px solid #a10d00;margin: 10px 0px 15px 0px;padding: 10px 0 10px 20px;background: #f1dada;">高考定语从句

介词+关系词

1）介词后面的关系词不能省略。

2）that前不能有介词。

3） 某些在从句中充当时间，地点或原因状语的“介词+关系词”结构可以同关系副词when 和where 互换。

This is the house in which I lived two years ago.

This is the house where I lived two years ago.

Do you remember the day on which you joined our club？

Do you remember the day when you joined our club？

先行词和关系词二合一

1)Whoever spits in public will be punished here.

(Whoever 可以用 anyone who 代替)

2)The parents will use what they have to send their son to technical school.

(what 可以用all that代替)

as， which 非限定性定语从句

由as， which 引导的非限定性定语从句，as和which可代整个主句，相当于and this或and that。As一般放在句首，which在句中。

As we know， smoking is harmful to one's health.

The sun heats the earth， which is very important to us.

典型例题

1）Alice received an invitation from her boss， ___came as a surprise.

A. it　 B. that　 C. whichD. he

答案C. 此为非限定性从句，不能用 that修饰，而用which.，it 和he 都使后句成为句子，两个独立的句子不能单以逗号连接。况且选he句意不通。

2）The weather turned out to be very good， ___ was more than we could expect.

A. what　B. which　C. that　D. it

答案B。which可代替句子，用于非限定性定语从句，而what不可。That 不能用于非限定性定语从句，it不为连词，使由逗号连接的两个句子并在一起在英语语法上行不通。

3）It rained hard yesterday， ____ prevented me from going to the park..

A. that　B. whichC. as　 D. it

答案B.

as 和which在引导非限制性定语从句时，这两个关系代词都指主句所表达的整个意思，且在定语从句中都可以作主语和宾语。但不同之处主要有两点：

(1） as 引导的定语从句可置于句首，而which不可。

(2） as 代表前面的整个主句并在从句中作主语时，从句中的谓语必须是系动词；若为行为动词，则从句中的关系代词只能用which.。

在本题中，prevent由于是行为动词，所以正确选项应为B。

As 的用法

例1. the same… as；such…as 中的as 是一种固定结构， 和……一样……。

I have got into the same trouble as he (has).

例2. as可引导非限制性从句，常带有'正如'。

As we know， smoking is harmful to one's health.

As is know， smoking is harmful to one's health.

As是关系代词。例1中的as作know的宾语；例2中，它充当从句的主语，谓语动词know要用被动式。

关系代词that 的用法

1）不用that的情况

a) 在引导非限定性定语从句时。

(错)　The tree， that is four hundred years old， is very famous here.

b) 介词后不能用。

We depend on the land from which we get our food.

We depend on the land that/which we get our food from.

2) 只能用that作为定语从句的关系代词的情况

a)　在there be 句型中，只用that，不用which。

b)　在不定代词，如：anything， nothing， the one， all， much， few， any， little等作先行词时，只用that，不用which。

c)　先行词有the only， the very修饰时，只用that。

d)　先行词为序数词、数词、形容词最高级时，只用that。.

e)　先行词既有人，又有物时。

举例：

All that is needed is a supply of oil.

所需的只是供油问题。

Finally， the thief handed everything that he had stolen to the police.

那贼最终把偷的全部东西交给了警察。

难点分析

（一）限制性定语从句只能用that的几种情况

1．当先行词是anything， everything， nothing (something 除外)， few， all， none， little， some等代词时，或者是由every， any， all， some， no， little， few， much等修饰时

(1) Have you taken down everything that Mr. Li has said？

(2) There seems to be nothing that seems impossible for him in the world.

(3) All that can be done has been done.

(4) There is little that I can do for you.

注意：当先行词指人时，偶尔也可以用who

(4) Any man that/.who has a sense of duty won’t do such a thing.

2. 当先行词被序数词修饰

(1) The first place that they visited in London was the Big Ben.

3. 当先行词被形容词最高级修饰时

(1) This is the best film that I have seen.

4. 当形容词被the very， the only 修饰时

(1) This is the very good dictionary that I want to buy，

(2) After the fire in his house， the old car is the only thing that he owned.

当先行词指人时，偶尔也可以用who

(3) Wang Hua is the only person in our school who will attend the meeting/

5. 当先行词前面有who， which等疑问代词时

(1) Who is the man that is standing there？

(2) Which is the T-shirt that fits me most？

6. 当先行词既有人，也有动物或者物体时

(1) Can you remember the scientist and his theory that we have learned？

（二）关系代词as和which引导的定语从句

as和which引导非限制性定语从句，有相同之处也有不同之处。具体情况是：

1．As和which都可以在定语从句中做主语或者宾语，代表前面整个句子。

(1) He married her， as/which was natural.

(2) He was honest， as/which we can see.

2. as 引导非限制性定语从句，可放在主句之前，或者主句之后，甚至可以切割一个主句；which引导的非限制性定语从句只能放在主句之后。另外，as有“正如……，正像……”的意思

(1) As is known to all， China is a developing country.

(2) He is from the south， as we can see from his accent.

(3) John， as you know， is a famous writer.

(4) He has been to Paris more than several times， which I don’t believe.

注意：当主句和从句存在逻辑上的因果关系时，常用which

(5) Tom was always late for school， which made his teacher angry.

3. 当先行次受such， the same修饰时，常用as

(1) I have never heard such a story as he tells.

(2) He is not such a fool as he looks.

(3) This is the same book as I lost last week.

注意：当先行次由the same修饰时，偶尔也用that引导定语从句，但是和由as所引导的定语从句意思不同

(4) She wore the same dress that she wore at Mary’s wedding. 她穿着她在MARY婚礼上穿过的一条裙子。

(5) She wore the same dress as her young sister wore. 她穿着和她妹妹所穿的一样的裙子。

（三）以the way为先行词的定语从句通常由in which， that引导，而且通常可以省略。

(1) The way in which/ that/./ he answered the question was surprising.

(四) but有时也可以做关系词引导定语从句

(1) There are very few but understand his idea. ( but= who don’t )

(五) 区分定语从句和同位语从句

1．定语从句修饰先行词，它和先行词是修饰关系；同位语从句说明先行词的具体内容，是补充说明的关系

(1) The plane that has just taken off is for London. 定语从句

(2) The fact that he has been dead is clear. 同位语从句

2．定语从句由关系代词或者关系副词引导，关系词在句中充当成分，有时可以省略；同位语从句主要由that引导，在句中一般不做成分；句子也可以由when， where， how， why， whether， what等词引导，充当成分

(1) The news he told me is true.

(2) The news that he has just died is true.

(3) The problem that we are facing now is how we can collect so much money. 定语

(4) The problem how we can collect so much money is difficult to solve.

3. 同位语从句和先行词一般可以用be动词发展成一个完整的句子，而定语从句不可以

(1) The idea that we could ask the teacher for advice is wonderful. 同位语

(2) The idea was that we could ask the teacher for advice.

(3) The fact that the earth moves around the earth is known to all.

(4) The fact is that the earth moves around the earth.

高考英语从句选择题

4.选B，where，意思是在这个地方观众可以买冰淇淋，注意关键词“在……”

5.A，as.说实话，对于这道题我知道是选A，但是完全凭借语感，我很难逻辑给出说明。你可以参考这个回答。

6.B，如果没有他的帮助，我将会怎么怎么样，注意关键词“他的……”

7.A,他也许会赢得那场比赛，如果这样的话，就能去参加国际赛了。这里是“如果那样”的意思，原本词组是in that case,这里是从句，改为 in which case, 从句中一般不再介词后用that

8.A，whose，是说“他们的”生命受到了影响。前面的those指代人，可以用people替代，这样理解就清晰了。

9.B，类似于第四题，强调的是“在什么什么地方”游客们可以看到一个玻璃房被建造，强调的是“在……”

10.B.世界银行的行长说，他对中国有一种特殊情感，是从很小的时候就开始的，这里只要一个名词代词which即可。复原就是 He remebers China staring ……，后面的staring其实又是一个从句，修饰remeber这个动作。

11.C.就像老话说的那样，“你不可以根据一本书的封面来评价这本书”，这里是一个固定短语，as as the old saying goes. 类似于“As we all know”.

祝你学习进步，不懂可以追问，谢谢！

————————————————————————————————————————————

以上皆为原创，逐一手打。

几道高考从句语法相关题目,高分悬赏

6.D 定语从句,where是关系副词代替先行词friend's home在从句中作地点状语.

15.B where...or... 是固定搭配,意思是:无论...还是....

30.D in that相当于连词,意思是:因为.

35.C of which引导的是定语从句,which代替先行词cities.of which相当于of the cities在这些城市中.

36.D when引导的是时间状语从句,意思是:当每个人都坐下之后还剩下一些椅子.

高考英语语法:高中英语语法-定语从句的种类和用法

1._whether_i accept the gift or refuse it is none of your business.我接受还是拒绝这份礼物与你无关。

2.it is strange __that no one liked this book这是It做形式主语的句子，真正的主语是that接的句子，没有人喜欢这本书，这很奇怪。不用should.

3.____nothing to do with us .填what he has done has.

have something to do with sth.是说“与。。有关”

4.i have no idea _what_ the word "infinity" means.什么从句?为什么填以下内容不行?1.what does the word infinity mean 2.what the meaning of the word infinity was 3.what was the meaning of the word infinity.

这是一个同位语从句，idea的内容就是后面what the word "infinity" means。同位语从句里要用陈述句，2也是陈述句，但时态不对。

5.she looked _as though_ she were ten years younger.为什么不填THAT,怎么翻译?为什么是AS THOUGH?

as though=as if,look做“看起来”讲是不及物动词，所以不能用that.

look as though就是“看起来好像...”的意思。

6.that's _what_ the party called on us to do.为什么填WHAT?怎么翻译?

这是个表语从句，what在从句里做宾语。

翻译：这就是当号召我们去做的事情。

7.is was _because_ he worked hard that he succeeded.为什么不能填since和for.

这是个强调句，it is....that....

用because强调的是原因，since是“既然”的意思，表示原因比较轻微，for只用在少数表示原因的句子里。像这种强调句里只能用because.

译：正是因为工作努力他才成功了。

8.his suggestion _that_ we go to see the art exhibition interested every one of us什么从句?

还是同位语从句，suggestion的内容就是that后we go to see the art exhibition 这些部分

9.are you sure _she is honest_?为什么不填whether she is honest.?什么从句

其实这里用whether也可以，但是句子意思就变了，用whether表示说话双方都不确定她是否诚实，但如果用are you sure _she is honest？就说明被问者是认为她很诚实的，说话者有怀疑。

这是宾语从句，省略了that.

10.he was interested in _all that_ he had seen at the exhibition.虽然all that =what,但是为什么不填WHICH?WHICH也可以做成分啊...?

如果用which，你必须给出选项啊。因为which是表示“哪一个”

比如说你在展览厅看见了好几样东西，问你哪一个最喜欢，就可以用which.

11.he often thinks of _how_ he can do more for the four modernizations.为什么不填WHAT?

因为原句里是do more,这里的more 是do的宾语，有了宾语了就不能用what 了，而How是提问方式，是可以的

译：他经常想怎么样才能为四个现代化做更多（贡献）。

12.is this _where_ we met each other two years ago?什么从句?还原为简单句怎么做?

This is _where_ we met each other two years ago是这句话的陈述句序，

是表语从句

这里就是我们两年前彼此见面的地方。

高考英语语法复习系列讲座-名词性从句

《高中英语语法-定语从句的种类和用法》由liuxue86.com我整理。本内容整理时间为05月12日，如有任何问题请联系我们。

定语从句的种类和用法

用来说明主句中某一名词或代词（有时也可说明整个主句或主句中一部分）而起定语作用的句子叫作定语从句。

一、关系代词引导的定语从句

1. 关系代词用来指代先行词是人或物的名词或代词

句子成分 用于限制从句或非限制性从句 只用于限制性从句

代替人 代替物代替人或物

主语 Who which that

主语 Whomwhich that

宾语 Whose（=of whom） whose（=of which）

例1：This is the detective who came from London.

例2：The book which I am reading is written by Tomas Hardy.

例3：The desk whose leg is broken is very old.

例4：This is the room that Shakespeare was born in.

2.关系代词的用法

（1）如果先行词是all，much，anything，something，nothing，everything，little，none等不定代词，关系代词一般只用that，不用which.例如：

All the people that are present burst into tears.

（2）如果先等词被形容词最高级以及first，last，any，only，few，mush，no，some，very等词修饰，关系代词常用that，不用which，who，或whom.例如：

（3）非限制性定语从句中，不能用关系代词that，作宾语用的关系代词也不能省略。例如：

There are about seven million people taking part in the election，most of whom、are well educated.

（4）which还有一种特殊用法，它可以引导从句修饰前面的整个主句，代替主句所表示的整体概念或部分概念。在这种从句中，which可以作主语，也可以作宾语或表语，多数情况下意思是与and this 相似，并可以指人。例如：

He succeeded in the competition，which made his parents very happy.

（5）that可指人或物，在从句中作表语，（指人作主语时多用who）仅用于限制性定语从句中。

（6）which可作表语，既可指人，以可指物。指人时，一般指从事某种职业或是有种特征。品性或才能的人。Which引导的定语从句可以限制性的，也可以是非限制性的。

（7）如果作先作词的集体名词着眼于集体的整体，关系代词用which；若是指集体中的各个成员，则用who.

（8）先行词有两个，一个指人，一个指物，关系代词应该用that.例如：

The boy and the dog that are in the picture are very lovely.

（9）如果先行词是anyone，anybody，everyone，everybody，someone，somebody，关系代词应该用 who 或whom，不用which.例如：

Is there anyone here who will go with you？

3.?介词＋关系代词?是一个普遍使用的结构

（1）?介词＋关系代词?可以引导限制性定语从句，也可以引导非限制性定语从句。?介词＋关系代词?结构中的介词可以是 in，on，about，from，for，with，to at，of，without 等，关系代词只可用whom或 which，不可用that .

（2）from where为?介词＋关系副词?结构，但也可以引导定语从句。例如：

We stood at the top of the hill，from where we can see the town?

（3）像listen to，look at，depend on，pay attention to，take care of等固定短语动词，在定语从句中一般不宜将介词与动词分开。例如：

This is the boy whom she has taken care of.

二、关系副词引导的定语从句

1.关系副词也可以引导定语从句

关系副词在从句中分别表示时间。地点或原因。关系副词when在从句中充当时间状语，where 充当地点状语，why充当原因状语。

2. that可引导定语从句表示时间。地点或原因

That有时可以代替关系副词 when，where 或者why引导定语从句表示时间。地点或原因，在 that引导的这种定语从句中，that也可以省去。

三、限制性定语从句与非限制性定语从句

1.二者差异比较

限制定语从句紧跟先行词，同先行词这间一般不加逗号，仅修饰先行词，可以由关系代词。关系副词或that来引导。非限制性定语从句仅作补充或说明，用逗号与主句隔开，既可修饰先行词，又可修饰整个主句，不可用that引导。

2.关系代词和关系副词的选择依据

（1） 弄清代替先行词的关系词在从句中作什么成分，作状语的应选用关系副词，作主语。宾语或表语的可选用关系代词。

3.先行词与定语从句隔离

定语从句一般紧跟在先行词之后，但定语从句与先行词之间有时也会插入别的成分，构成先行词与定语从句的隔离。例如：

1）This is the article written by him that Is poke to you about?

2）He was the only person in this country who was invited

四、As在定语从句中的用法

1. 引导限制性定语从句和非限制性定语从句

（1）as多与such 或the same连用，可以代替先行词是人或物的名词。

（2）as 也可单独使用，引导非限制性定语从句，作用相当于which.例如：

The elephant's nose is like a snake，as anybody can see.

（3）the same? that与 the same ?as在意思上是不同的。

2.As引导的非限制性定语从句的位置

as引导的非限制性定语从句位置较灵活，可以位于主句前面。中间或后面，一般用逗号与主句隔开，但which所引导的非限制性定语从句只能放在主句之后。例如：

（1）As is expected，the England team won the football match.

（2）The earth runs around the sun，as is known by everyone. 《高中英语语法-定语从句的种类和用法》由liuxue86.com我整理

高中宾语从句详细用法和高考宾语从句专项练习

语法复习三：名词性从句

在前面我们已经知道了什么是句子.我们可以这样解释什么叫从句:在一个句子的前面加上一个连接词,这个句子就变成了从句.如果这个从句做了主语,它就是主语从句.其它的以此类推.

注: 1.特殊疑问句本身可以做从句,它不需要加连接词.

2.所有的从句要使用陈述语序. 陈述语序: 句子第一个词永远是主语;第二个词可能是情态动词\助动词等加上动词,或者是动词本身.

名词性从句相当于名词，可分别作主句的主语、表语、宾语和同位语。因此，名词性从句分为主语从句、表语从句、宾语从句和同位从句。

名词性从句,顾名思义,它具有名词性.所以可以作主语,宾语等等.回忆一下句子成分那一章

（一）引导名词性从句的连接词

1、连接代词：who, whose, whom, what, which。有词义，在从句中担任成分，如主语、表语、宾语、或定语等。

2、连接副词：when, where, why, how。有词义，在从句中担任成分，作状语。

3、连接词：that, whether, if, as if, that

（二）主语从句

1、主语从句在复合句作主语。

Who will go is not important.

2、用it作形式主语，主语从句放在句末。

It doesn’t matter so much whether you will come or not.

3、that引导主语从句时放在句首时，不能省略。

That he suddenly fell ill last week made us surprised.

实用例句:

Is it true that he will be punished seriously by the headmaster?

Does it make any difference who bought these gifts?

How strange it is that these children are so quiet!

注意: 表示是否,只能使用whether.

（三）表语从句

1、表语从句在复合句中作表语，位于系动词之后。

The question was who could go there.

2、引导表语从句的连接词that有时可省去。

My idea is (that) we can get more comrades to help in the work.

注意: 表示是否,只能使用whether.

（四）宾语从句

1、宾语从句在复合句中作宾语。引导宾语从句的连词that一般可省略。

I hope (that) everything is all right.

2、介词之后的宾语从句，不可用which或if连接，要分别用what或 whether。

I’m interested in whether you’ve finished the work..

I’m interested in what you’ve said.

3、whether与if都可以引导宾语从句，常可互换。但下面情况不能互换。

if和whether区别

①宾语从句是否定句时，只用if，不用whether。

e.g. I wonder if it doesn’t rain.

②用if 会引起误解，就要用whether。

e.g. Please let me know whether you want to go.（此句如果把whether改成if，

容易当成条件句理解）

③宾语从句中的whether 与or not直接连用，就不能换成if；不直接连用，可换。

e.g. I don’t know whether or not the report is true.

I don’t know whether/ if the report is true or not.

④介词后的宾语从句要用whether引导。whether 可与不定式连用。whether也可引导主语从句、表语从句、同位语从句，还可引导让步状语从句，以上均不能换成if。但引导条件从句时，只能用if，而不能用whether。

It depends on whether we have enough time.

They don’t know whether to go there.

Please come to see me if you have time. 状语从句

实用例句: 使用it作形式宾语

I thought it impossible that he could finish this job in just two hours.

He left it to my judgment whether we should continue this project.

注意: 形式主语和形式宾语只有一个替代词: it

（五）同位语从句

同位语从句在句中作某一名词的同位语，一般位于该名词（如：news, fact, idea, suggestion, promise等）之后，说明该名词的具体内容。

I have no idea when he will be back.

The fact that he had not said anything surprised everybody

一、判断下列各句哪句含有名词性从句，并指出是什么从句：

1. China is no longer what it used to be.

2. The truth that the earth turn around the sun is known to all.

3. It was snowing when he arrived at the station.

4. How he persuaded the manager to change the plan is interesting to us all.

5. The news that they had won the game soon spread over the whole school.

6. The news that you told me yesterday was really disappointing.

7. That is where Lu Xun used to live.

8. He spoke as if he understood what he was talking about.

9. Do you remember the teacher who taught us English at middle school?

10. I wonder why she refused my invitation.

参考答案: 1、表语从句；2、同位语从句；3、不是；4、主语从句；5、同位语从句；6、不是；7、表语从句；8、宾语从句；9、不是；10、宾语从句

二、用适当的连词填空：

1. I can’t decide ____________ dictionary I should buy.

2. That’s ____________ he refused my invitation.

3. I am very interested in ____________ he has improved his pronunciation

in such a short time.

4. ____________ we need is more time.

5. The fact ____________ she had not said anything at the meeting

surprised everybody.

6. ____________ and ____________ they will meet has not been decided yet.

7. Please tell me ____________ you are waiting for.

8. Is that ____________ you are looking for?

9. Would you please tell me ____________ the nearest post office is?

10. I don’t know ____________ he will agree to the plan or not.

参考答案: 1. which; 2. why; 3. how; 4. What; 5. that; 6. when, where; 7. who(m); 8. what; 9. where; 10. whether

三、选择填空：

1. Do you see _____ I mean?

A. that B./ C. how D. what

key: D 宾语从句 that引导宾语从句无词义,也不作成分.mean是及物动词,必须有宾语.所以不选A; how是副词,也不能作mean的宾语.what I mean, what I did, what I said,等是一个非常重要的名词结构.

2. Tell me_____ is on your mind.

A. that B. what C. which D. why

key: B what is on your mind 是what名词结构．句意：告诉我你的心事．

3. We must stick to _____ we have agreed on.

A. what B. that C. / D. how

key: A

4. Let me see _____.

A. that can I repair the radio B. whether I can repair the radio

C. I can repair the radio D. whether can I repair the radio

key: B 从句使用陈述语序 注意选项C可以看成是省略了that的宾语从句,在语法上来讲它是正确的,但语义不通.

5. Keep in mind _____.

A. that the teacher said B. what did the teacher say

C. that did the teacher say D. what the teacher said

key: D what名词结构作keep宾语.

6. Could you advise me _____?

A. which book should I read first B. what book should I read first

C. that book I should read first D. which book I should read first

key: D

7. He was criticized for _____.

A. he had done it B. what he had done

C. what had he done D. that he had done it

key: B

8. Would you kindly tell me _____?

A. how can I get to the Beijing Railway Station

B. how I can get to the Beijing Railway Station

C. where can I get to the Beijing Railway Station

D. whether can I get to the Beijing Railway Station

key: B

9. Mrs. Smith was very much impressed by _____.

A. what had she seen in China B. that she had seen in China

C. what she had seen in China D. which had she seen in China

key: C

10. We took it for granted ___

A. that they were not coming B. that were they not coming

C. they were coming not D. were they not coining

key: A

11. I really don't know _____

A. I should do next B. what should I do next

C. what I should do next D. how I should do next

key: C

12. I'm afraid _____.

A. the little girl will have to be operated on

B. that will the little girl have to operate on

C. the little girl will have to operate on

D. that will the little girl have to be operated on

key: A

13. She walked up to _____ .

A. where did I stand B. where I stood C. I stood there D. where I stood there

key: B where I stood 我站的地方

14. Can you tell me _____?

A. who is that gentleman B. that gentleman is who

C. who that gentleman is D. whom .is that gentleman

key: C 陈述语序

15. We'll give you _____.

A. that do you need B. what do you need

C. whatever you need D. whether do you need

key: C whatever: 1. no matter what 表示让步,副词性 2. anything that ,名词性

如果一个副词性的疑问词加上ever后缀,它只具有副词性.如 whenever=no matter when; however 它是一个很特殊的词: 1.表示转折关系,副词,词义:然而 2.no matter how 无论怎么

16. They want us to know _____ to help us.

A. what can they B. what they can C. how they can D. how can they

key: B what they can (do), what作do的宾语.

17. We must put _____ into practice.

A. what we have learned B. that we have learned

C. that have we learned D. what have we learned

key: A

18. Did she say anything about _____?

A. that the work was to be done B. how was the work to be done

C. that was the work to be done D. how the work was to be done

key: D

19. He was never satisfied with _____.

A. what she had achieved B. had what she achieved

C. she had achieved D. that she achieved

key: A

20. These photographs will show you _____.

A. what does our village look like B. what our village looks like

C. how does our village look like D. how our village looks like

key: B

21. Peter insisted _____ he pay the bill.

A. on that B. what C. that D. on which

key: C insist 后面加that从句要用虚拟的形式: should+v, should可省略

22. They urged _____ the library open during the vacation.

A. when B. where C. why D. that

key: D 同上

23. We wish we could have learned _____ when we were at high school.

A. what you did B. that you had done

C. that what you did D. what did you do

key: A

24.1 will describe to you _____ I saw when there.

A. what B. that C. which D./

key: A

25. From _____ I should say he is a good worker.

A. what 1 know of him B. that I do know of him

C. what do I know of him D. that do I know of him

key: A

26. I will give this dictionary to __ wants to have it.

A. whomever B. anyone C. whoever D. someone

key: C any one who wants to have it

27._____ they will come here hasn't been decided yet.

A. What B. That C . When D. Where

key: C

28. _____ was said here must be kept secret.

A. Who B. The thing C. Whatever D. Where

key: C

29. It is still a question _____ we shall have our sports meet.

A. if B. that C. what D. when

key: D

30. I'm going anyway. _____ she will go is up to her to decide.

A. If or not B. Whether or not C. If D. That

key: B

31. It is strange _____ she have left without saying a word.

A. that B. what C. why D. how

key: A

32. It is very clear _____ our policy is a correct one.

A. what B. that C. why D. where

key: B

33. _____ Mr Zhang said is quite right.

A. That B. When C. What D. Whether

key: C

34. It has been decided _____ he will be sent there.

A. if B. whether C. why D. that

key: D

比较: It hasn't been decided whether he will be sent there.

35. It doesn't matter _____he' s come back or not.

A. if B. whether C. that D. when

key: B

36. It's a great pity _____ we won’t be able to finish the task on time.

A. when B. that C. why D. where

key: B

37. It happened _____ I wasn't there that day.

A. when B. why C. where D. that

key: D it happened that... 碰巧...

38._____ you have done might do harm to other people.

A. What B. That C. Which D. The things

key: A

39. _____ leaves the room last ought to turn oft the lights.

A. Anyone B. The person C. Whoever D. Who

key: C anyone who

比较: who left the room last is being looked into.

40._____ the 2000 Olympic Games won't be held in Beijing is known to all.

A. Whether B. If C. Whenever D. That

key: D

41. _____ fails to see this will make a big mistake.

A. That B. Whoever C. Whether D. Whether or not

key: B anyone who

42. __ we need more equipment is quite obvious.

A. What B. Whether C. That D. Whatever

key: C

43. Has it been announced _____?

A. when are the planes to take off B. that are the planes to take off

C. where are the planes to take off D. when the planes are to take off

key: D

44. That is _____ we all support his idea.

A. what B. why C. where D. when

key: B

45. That’s _____ we should do.

A. that B. what C. how D. why

key: B

46. _____ is troubling me is _____ I don’t understand _____ he said

A. What; that; what B. What; what; what

C. That; that; what D. Why; that; which

key: A

47. Things were not _____ they seemed to be.

A. when B. why C. that D. what

key: D

48. That’s _____ I want to say.

A. all what B. what C. all which D. what that

key: B

49. That’s _____ .

A. where our differences lie B. our differences lie there

C. where do our differences lie D. that where our differences lie

key: A

50. That is _____ .

A. where lived he there B. where did he live

C. where he lived D. that where he lived

key: C

51. The questions is _____.

A. whether is it worth doing B. that if it is worth doing

C. whether it is worth doing D. if it is worth doing

key: C

52. Water will continue to be _____ it is today next in importance to oxygen.

A. how B. which C. what D. as

key: C

53. That's_____.

A. how did I become a teacher B. how I became a teacher

C. how a teacher I became D. that I became a teacher

key: B

54. They are just _____.

A. that what shall I have B. what shall I have

C. that I shall have what D. what I shall have

key: D

55. It looked ____.

A. as if it was going to rain B. that as if it was going to rain

C. as if was it going to rain D. as if that it was going to rain

key: A

56. That's_____.

A. how she did it B. that how did she do it.

C. how did she do it D. what she did it

key: A 注意选项D,多了一个词: it

57. That is _____ we decided to put the discussion off.

A. where B. which C. that D. why

key: D

58. That’s _____ I lived when I was ten years old.

A. where B. at which C. there where D. when

key: A

59. My suggestion is _____ we should send a few comrades to help them.

A. if B. that C. when that D. that where

key: B

60. The idea _____ all people are selfish is wrong.

A. what B. that C. why D. if

key: B

61. We heard the news _____ our team had won.

A. that B. what C. whether D. why

key: A

62. The fact _____ he hadn’t said anything surprised us all.

A. why B. if C. that D. whether

key: C

63.I have no idea _____ she will be back.

A. that B. where C. that when D. when

key: D

64. We must keep in mind the fact _____ China is still a developing country.

A. whether B. that C. why D. when

key: B

65. They have no idea at all _____.

A. where he has gone B. where did he go

C. where has he gone D. which place he has gone

key: A

你好。

定语从句专项练习题及详解50题

1.The place _______interested me most was the Children's Palace.

A. Which B. where C. what D. in which

2.Do you know the man _______?

A. whom I spoke B. to who spoke C. I spoke to D. that I spoke

3.This is the hotel _______last month.

A. which they stayed B. at that they stayed

C. where they stayed at D. where they stayed

4.Do you know the year ______the Chinese Communist Party was founded?

A. which B. that C. when D. on which

5.That is the day ______I'll never forget.

A. which B. on which C. in which D. when

6.The factory ______we'll visit next week is not far from here.

A. where B. to which C. which D. in which

7.Great changes have taken place since then in the factory _______we are working.

A. where B. that C. which D. there

8.This is one of the best films _______.

A. that have been shown this year B. that have shown

C. that has been shown this year D. that you talked

9.Can you lend me the book ______the other day?

A. about which you talked B. which you talked

C. about that you talked D. that you talked

10.The pen ______he is writing is mine.

A. with which B. in which C. on which D. by which

11.They arrived at a farmhouse, in front of ______sat a small boy.

A. whom B. who C. which D. that

12.The engineer ______my father works is about 50 years old.

A. to whom B. on whom C. with which D. with whom

13.It there anyone in your class ______family is in the country?

A. who B. who's C. which D. whose

14.I'm interested in ______you have said.

A. all that B. all what C. that D. which

15.I want to use the same dictionary ______was used yesterday.

A. which B. who C. what D. as

16.He isn't such a man ______he used to be.

A. who B. whom C. that D. as

17.He is good at English, ______we all know.

A. that B. as C. whom D. what

18.Li Ming, ______to the concert enjoyed it very much.

A. I went with B. with whom I went C. with who I went D.I went with him

19.I don't like ______ as you read.

A. the novels B. the such novels C. such novels D. same novels

20.He talked a lot about things and persons ________they remembered in the school.

A. which B. that C. whom D. what

21.The letter is from my sister, ______is working in Beijing.

A. which B. that C. whom D. who

22.In our factory there are 2,000 workers, two thirds of ____are women.

A. them B. which C. whom D. who

23.You're the only person ______I've ever met ______could do it.

A. who;/ B./; whom C. whom;/ D./; who

24.I lost a book, ______I can't remember now.

A. whose title B. its title C. the title of it D. the title of that

25.Last summer we visited the West Lake, ______Hangzhou is famous in the world.

A. for which B. for that C. in which D. what

26.I have bought such a watch _______ was advertised on TV.

A. that B. which C. as D. it

27.I can never forget the day _______ we worked together and the day ______ we spent together.

A. when; which B. which; when C. what; that D. on which; when

28.The way ______he looks at problems is wrong.

A. which B. whose C. what D./

29.This is the reason ______he didn't come to the meeting.

A. in which B. with which C. that D. for which

30.This machine, ______for many years, is still working perfectly.

A. after which I have looked B. which I have looked after

C. that I have looked after D. I have looked after

31.The reason ______he didn't come was ______he was ill.

A. why; that B.that;why C. for that;that D.for which;what

32.He is working hard, ______will make him pass the final exam.

A.that B.which C.for which D.who

33.That is not the way ______I do it.

A./ B.which C.for which D.with which

34.I have two grammars, ______are of great use.

A. all of which B. either of which C. both of that D. both of which

35.I want to use the same tools _______used in your factory a few days ago.

A. as was B. which was C. as were D. which

36.My neigh bours used to give me a hand in time of trouble, _______ was very kind of them.

A. who B. which C. that D. it

37.This is the magazine _______ I copied the paragraph.

A. that B. which C. from that D. from which

38.He is not such a man _______ would leave his work half done.

A. that B. which C. who D. as

39. You can depend on whatever promise _______ he makes.

A. / B. why C. when D. whose

40. Smoking, _______ is a bad habit, is, however, popular.

A. that B. which C. it D. though

41. --- Did you ask the guard _______ happened?

--- Yes, he told me all _______ he knew.

A. what; that B. what; what C. which; which D. that; that

42. I shall never forget those years _______ I lived on the farm with

the farmers, _______ has a great effect on my life.

A. when; who B. that; which C. which; that D. when; which

43. The number of the people who _______ cars _______ increasing.

A. owns; are B. owns; is C. own; is D. own; are

44. During the days ________, he worked as a servant at the Browns.

A. followed B. following C. to follow D. that followed

45. Is oxygen the only gas _______ helps fire burn?

A. that B. / C. which D. it

46. The clever boy made a hole in the wall, _______ he could see _____ was going on inside house.

A. which; what B. through which; what C. through that; what D. what; that

47. Is _______ some German friends visited last week?

A. this school B. this the school C. this school one D. this school where

48. John got beaten in the game, _______ had been expected.

A. as B. that C. what D. who

49. I have bought two ballpens, _______ writes well.

A. none of them B. neither of them C. neither of which D. none of which

50. All that can be eaten _______ eaten up.

A. are being B. has been C. had been D. have been

参考答案及解析

1. A. which用作关系代词，在定语从句中作主语。

2．C. "和谁讲话”要说speak to sb. 本题全句应为Do you know the man whom I spoke to.。whom是关系代词，作介词to的宾语，可以省略。

3. D. where是关系副词，表示地点，在定语从句中作地点状语。

4. C. when是关系副词，表示时间，在定语从句中作时间状语。

5．A. which是关系代词，在从句中作forget的宾语。其他几个答案都不能作宾语。

6．C. 解析同第5题。

7. A. 解析见第3题。

8. A. 本句话的先行词应该是films,因此，关系代词that是负数概念，其谓语动词应用复述的被动语态have been shown。如果句中的one前面使用了定冠词the，则the one应该视为先行词。

9. A. “谈到某事物”应说talk about sth.。about是介词，其后要用which作宾语，不能用that。

10. A. with which是"介词+关系代词"结构,常用来引导定语从句.with有"用"的意思,介词之后只能用which,不能用that. with which在定语从句中作状语,即he is writing with a pen.

11. C. in front of which 即in front of a farmhouse. In front of which在从句中作状语.

12. D. with whom引导定语从句.with whom放在从句中即为:my father works with the engineer.

13. D. whose引导定语从句,在从句中作主语family的定语.

14. A. that引导定语从句,因为先行词是all,所以只能选用that引导.

15. D. the same……..as是固定用法, as引导定语从句时,可以作主语,宾语或表语.在本句话中,as作从句的主语.

16. D. such……… as是固定用法,as引导定语从句时,可以作主语,宾语或表语.在本题中,as作表语.

17. B. as作关系代词可以单独用来引导非限制性定语从句。这时as所指代的不是主句中某个名词，而往往指代整个主句的含义。as在从句中可以作主语、宾语。从句可放在主句后，也可置于主句前。在本句中,as作宾语.

18. B. Li Ming enjoyed it very much是主句,with whom I went to the concert是定语从句.with whom放在从句中为:I went to the concert with Li Ming.

19. C. as引导定语从句时通常构成such…as或the same…as固定搭配，其中such和same修饰其后的名词，as为关系代词，指代其前的名词引导定语从句。 as在从句中可以作主语、表语或宾语。Such修饰单数名词时,要用such a……..,本题中such books, such直接修饰复数名词.

20. B. things和persons是先行词.当定语从句要修饰的先行词是既表示人,又表示物的名词时,其关系代词要用that.

21. D. who引导非限制性定语从句,who作从句的主语.

22. C. two thirds of whom 即:two thirds of the 2,000 workers.

23. D. 先行词person后有两个定语从句,第一个从句省略了关系代词whom.因为, whom作从句中met的宾语,可以省略.第二个从句who could do it.who在从句中作主语,不可省略.

24. A. whose title引导非限制性定语从句,whose title也可以说成the title of which

25. A. for which 引导定语从句,使用介词for,是来自于从句中的固定短语 be famous for "以……..而闻名".

26. C. 当先行词被such修饰时,引导定语从句的关系代词要用as. As在本从句中作主语.

27. A. 两个先行词the day都是表示时间的名词,但第一个空白处要填的关系词在从句中作状语,因此要用关系副词when. 第二个空白处要填的关系词在从句中作动词spent的宾语,因此要用关系代词which或that来引导定语从句.

28. D. 在way、distance、direction等词后的定语从句中，常用that来代替“in (或其他介词)+which”、when或where，而that常可省略。

29. D. for which在定语从句中作原因状语,可用why 来替代.

30. B. which I have looked after 构成一个非限制性定语从句.

31. A. The reason why… was that….已成为一种固定句型，这一句中的why和that不能随意换位，也不能将that改成because，尽管that这个词在译文中可能有 “因为”的含义。

32. B. 非限制性定语从句常用which引导,which表示前句话的整个含义.

33. A. 解释见28题.

34. D. 主句中的two表明不能选A.从句中的are表明不能选B. both of which用来引导非限制性定语从句.

35. C. as引导定语从句时通常构成such…as或the same…as固定搭配，其中such和same修饰其后的名词，as为关系代词，指代其前的名词引导定语从句。as在从句中可以作主语、表语或宾语。本题中as作从句的主语.

36. B. 非限制性定语从句常用which引导,which表示前句话的整个含义.

37. D.

38. D. 解析见35题.

39. A. he makes是定语从句, 从句前省略了关系代词that.

40. B. which is a bad habit 非限制性定语从句.

41. A. what happened是宾语从句. all 之后that he knew是定语从句.先行词是all,所以关系代词只能用that.

42. D. years是表示时间的名词,用when引导定语从句,是因为when在从句中作时间状语.第二个空选用which,引导一个非限制性定语从句.

43. C. 本句话的定语从句是who own cars. 其先行词是people,因此,定语从句的谓语动词要用复数的own。本句话主句的主语是The number of指“…..的数目”，是单数概念。因此，主句的谓语动词要用is。

44. D. that followed是定语从句，关系代词that在从句中作主语。

45. A. 先行词gas被only修饰，关系代词要用that，而不用which。

46. B. through which引导定语从句，through which即through the hole,在定语从句中作状语。What引导的是see的宾语从句，并作从句的主语。

47. B. 为便于理解，改写本句话：This is the school that some Germanfriends visited last week. 不难看出，作表语的the school是先行词。that引导了定语从句，因为that同时又作visited的宾语，所以被省略了。其它选项结构不对。

48. A. 解释见35题。

49. C. 因为是two ballpens, 并且定语从句的谓语writes是单数概念。因此，C是正确选项。

50. B. 本句话中，主句的主语是all,为抽象概念。因此，其谓语应用单数的has been。关系代词that引导定语从句，并在从句中作主语。