(word完整版)小升初定语从句讲解及习题

定语从句

一、定语从句及相关术语

1.定语从句：修饰一个名词或代词的从句称为定语从句，一般紧跟在它所修饰的先行词后面。

2.关系词：引导定语从句的关联词成为关系词

关系词有关系代词和关系副词。

关系代词有that,which,who,whom,whose,as等；

关系副词有where,when,why等。

关系词常有3个作用：1，引导定语从句。2，代替先行词。3，在定语从句中担当一个成分。

二.关系代词引导的定语从句

1.who指人，在从句中做主语

(1)The boys who are playing football are from Class One.

(2)Yesterday I helped an old man who lost his way.

2.whom指人，在定语从句中充当宾语，常可省略。

(1)Mr.Liu is the person(whom)you talked about on the bus.

(2)Mr.Ling is just the boy whom I want to see.

注意：关系代词whom在口语和非正式语体中常用who代替，可省略。

(3)The man who/whom you met just now is my friend.

3.which指物，在定语从句中做主语或者宾语，做宾语时可省略

(1)Football is a game which is liked by most boys.

(2)This is the pen(which)he bought yesterday.

4. that指人时，相当于who或者whom；

指物时，相当于which。在宾语从句中做主语或者宾语，做宾语时可省略。

(5)The number of the people that/who come to visit the city each year rises one million.

(6)Where is the man that/whom I saw this morning?

5. whose通常指人，也可指物，在定语从句中做定语

(1) He has a friend whose father is a doctor.

(2)I once lived in a house whose roof has fallen in.whose

指物时，常用以下结构来代替

(3) The classroom whose door is broken will soon be repaired.

(4)The classroom the door of which is broken will soon be repaired.

(5)Do you like the book whose cover is yellow?

(6)Do you like the book the color of which is yellow?

*三.介词+关系代词引导的定语从句

关系代词在定语从句中做介词宾语时，从句常由介词+关系代词引导

(1) The school(that/which)he once studied in is very famous.

(2)The school in which he once studied is very famous.

(3)Tomorrow I will bring here a magazine(that/which)you asked for.

(4)Tomorrow I will bring here a magazine for which you asked.

(5)We'll go to hear the famous singer(whom/that/who)we have often talked about.

(6)We'll go to hear the famous singer about whom we have often talked.

注意：

1.含有介词的动词短语一般不拆开使用，如：look for,look after,take care of等

(1)This is the watch which/that I am looking for.(T)

(2)This is the watch for which I am looking.(F)

2. 若介词放在关系代词前，关系代词指人时用whom，不可用who或者that；指物时用which，不能用that；关系代词是所有格时用whose

(1)The man with whom you talked is my friend.(T)

(2)The man who/that you talked with is my friend.(F)

(3)The plane in which we flew to Canada is very comfortable.(T)

(4)The plane in that we flew in to Canada is very comfortable.(F)

3.“介词+关系代词”前可有some,any,none,both,all,neither,most,each,few等代词或者数词

(1)He loved his parents deeply,both of whom are very kind to him.

(2) In the basket there are quite many apples,some of which have gone bad.

(3) There are forty students in our class in all,most of whom are from big cities.

四．关系副词引导的定语从句

1.when指时间，在定语从句中做时间状语

(1)I still remember the day when I first came to the school.

(2)The time when we got together finally came.

2.where指地点，在定语从句中做地点状语

(1)Shanghai is the city where I was born.

(2) The house where I lived ten years ago has been pulled down.

3.why指原因，在定语从句中做原因状语

(1)Please tell me the reason why you missed the plane.

(2)I don't know the reason why he looks unhappy today.

注意：关系副词引导的从句可以由“介词+关系代词”引导的从句替换

(1)The reason why/for which he refused the invitation is not clear,

(2)From the year when/in which he was going to school he began to know what he wanted when he grew up.

(3)Great changes have taken place in the city in which/where I was born.

五．限制性定语从句和非限制性定语从句

限制性定语从句举例：

(1) The teacher told me that Tom was the only person that I could depend on.

(2) China is a country which has a long history.

非限制性定语从句举例：

(1)His mother,who loves him very much,is strict with him.

(2)China,which was founded in1949,is becoming more and more powerful.

要注意区分以下几个句子的不同

(1) His brother who is now a doctor always encourages him to go to college.他那当医生的哥哥常鼓励他要考上大学。（他还有其他的哥哥）

(2)His brother,who is now a doctor,always encourages him to go to college.他的哥哥是当医生的，常鼓励他要考上大学。（他只有一个哥哥）

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 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.同位于从句

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.

(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.同位语

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

介词短语+先行词的定语从句

1.关系代词whose,引导定语从句时,既可指人,又可指物,在从句中只能作定语；

of whom只能指人；of which只能指物,有时whose可以与of whom和of which互换使用.

如：The girl whose hair is golden is from England.

头发金色的那个女孩是英国人.

The house whose doors are green is an office building.

门是绿色的那座房子是办公楼.

2.“介词 + whose +名词”引导定语从句

如：I love my motherland,for whose good future I will work hard.

我爱我的祖国,为了她美好的未来我要努力工作.

3.在下列情况下,一般只用of whom和of which.

(1) 定语从句的主语是few,little,some,most,many,much等时,

一般只用of whom和of which.

In the room are lots of people,many of whom I don’t know.

房间里有很多人,很多人我不认识.

He has a lot of story-books,a few of which I have never read.

他有很多故事书,有几本故事书我还从未看过.

(2) 定语从句的主语是数词、形容词的最高级时,一般只用of whom和of which.如：The old man has three children,two of whom are college students and one of whom is a manager.那个老人有三个小孩,其中两个是大学生,另一个是经理.

(3) 定语从句的主语是all,none,both,neither,each等不定代词时,

一般只用of whom和of which.如：

There are fifty students in our class,all of whom are working hard.

我们班有五十个学生,所有这五十个学生学习都刻苦.

He planted two trees last year,both of which are growing well.

去年他栽了两棵树,这两棵树都长得好.

(4) 在定语从句中作表语的定语时,一般只用of whom和of which.如：

He has three brothers,of whom Li Lei is the youngest one.

它有三兄弟,李蕾是他们中最小的一个.

There are many countries in Asia,of which China is the largest one.

亚洲有很多国家,中国是最大的一个.

The old man who/whom /that we visited yesterday is a famous artist.

Miss Wang is taking care of the child whose parents have gone to Beijing .

The man with whom my father shook hands just now is our headmaster. （=The man who/whom that my father shook hands with just now is our headmaster.）注：

A．指人时有时只用who不宜用that。

1．先行词为one、ones或anyone

（1）The comrade I want to learn from is the one who studies hard and works hard.

（2）Anyone who breaks the law should be punished.

2．先行词为these时

These who are going to Beijing are the best students of our school.

3．在there be 开头的句子中

There is a student who wants to see you.

4．一个句子中带有两个定语从句，其中一个定语从句的关系代词是that，另一个宜用who，以免重复。

The student that won the first prize is the monitor who works hards.

5．在非限制性定语从句中

A。I met a friend of mine in the street, who had just come from Japan.

B．主句以who开头的句子中,只用that,不用who。

二．指物的关系代词有which、whose(=of which)、that. 试分析：

1. I like the books which / that were written by Lu Xun.

2. The desks (which/that) we made last year were very good.

3. This is the house in which we lived last year. (= This is the house which /that we live

d in last year.)

4. I live in the room whose windows face south. (= I live in the room ,the windows of wh ich face south.)

注：

A. 介词如果位于作为其宾语的关系代词之前时，只能用whom、 which不能用who或that.

(1). The girl about whom they were talking is our monitor.

(2). The book in which there are many interesting things was written by Li Ming.

B. 部分短语动词中的介词不可与动词拆开，在定语从句中其介词不可前置，只能放在其动词之后。

Is this the book which she is looking for?

The old man who/whom they are waiting for is Professor Li.

The child who/whom she is looking after is Wang Ping’s son.

C．指物时，下列情况下只能用that ，不宜用which。

（1）先行词为不定代词，如All、much、anything、everything、nothing、something、none、the one等。

We are willing to do anything that is good to the people.

I have told them all (that) I know.

All that can be done has been done.

（2）先行词是序数词或被序数词、修饰时。

The first book that I read last night was an English novel.

（3）先行词是形容词最高级或被最高级修饰时。

This is one of the most interesting films that I have ever seen.

This is the best that can be done now.

（4）如果有两个或两个以上分别表示人和物的先行词时(先行词既有人又有物)，定语从句的关系代词用which和who都不合适，只能用that。

We know nothing about the doctors and the hospitals that you are talking about.

There are sheep and men that can be seen on the hill.

（5）如果先行词被the only、the very、the last、the same、any、 few 、little、no、 all 、one of、 just修饰时。

This is the only book that can be lent to you.

（6）当主句是以which开头的特殊问句时，关系代词只用that。

Which is the dictionary that he used yesterday ?

D．只物时，下列情况下只能用which，不宜用that。

（1）关系代词放在介词之后

This is the factory in which we once worked.

（2）非限制性定语从句中

This is the book, which is written by Lu Xun.

（3）that，Those作主语时

Those which are on the desk are English books.

E．先行词前有such、the same、 as时, 关系代词用as，不用that, 但the same…as…表示同样的, the same…that…表示同一的

He knows as many people as are present at the meeting.

Such people as you refer to are rare nowadays.

三．比较When/which、where /which、why.

which I still never forget.

This is the day when I joined the party.

which he spent reading the books.

where I found the book.

which makes machines.

This is the place which we once visited.

which I will never forget.

which I am looking for.

限制性定语从句与非限制性定语从句的区别：

限制性定语从句

非限制性定语从句

All the students who study hard have passed.学习努力的学生都考试及格了。(只有努力的及格了，不努力的没及格。) All the students ,who study hard have passed.所有的学生都及格了，他们学习努力。（没有人不及格，这些学生都很努力。）

从句是先行词不可缺少的定语（如去掉，主句意思就不完整或不正确。）从句是对先行词的附加说明（如去掉，主句意思仍清楚，不受影响。）与主句关系密切，不用逗号与主句关系不十分密切，用逗号与主句隔开译为汉语时，从句译在先行词前，与先行词用“的”连接译为汉语时，从句放在主句后面关系代词that可以代替who、whom(指人)、which(指物) 关系代词不用that,只用who、whom(指人)、which(指物) 关系代词代替宾语时可以省略关系代词不能省略关系代词as和which

先研究下面两个例句：

○1.This elephant is like a snake, as /which everybody can see. =As everybody can see , this elephant is like a snake. 任何人都看得出来，这头象像条蛇。

○2.Tom didn’t pass the physics exam, which made his parents very angry. Tom物理考试不及格，这使得他父亲很生气。

这两个例句中，as和which所代表的都是整个主句所表示的内容。但有两点不同之处： 1．在形式上as引导的非限制性定语从句可位于主句的后面，也可位于主句的前面；而which引导的非限制性定语从句只能位于主句的后面，不能位于主句的前面。

2．在意义上，as引导的定语从句和主句的关系一般为一致关系，常译为“正如……”，“就像……”，而which引导的定语从句和主句的关系是因果关系，或which引导的定语从句是对主句的评论。因此，在意思通顺的情况下，which可代替as，而as许多时候不能代替which，如句○2。再如：

1．He was late again, as / which we had expected. =As we had expected, he was late

again. 正如我们所料，他又迟到了。/他又迟到了这是我们早就料到的。

2． The street hasn’t been cleared for weeks, which makes it very dirty. 街道好多星期没有打扫了，因此整条街很脏。（不用as）

3．The young man cheated his friend of much money, which was disgraceful. 那年轻人诈骗了他朋友许多钱财，这是不光彩的。（不用as）

4．He takes exercise everyday, which has done a lot of good to his health. 他每天运动，这对他的身体很有好处。（不用as）

5．As has already been pointed out, English is rather difficult for a foreigner. 正如已经指出的那样，英语对于初学者说，是相当难学的。在such…as…、

the same…as…、as…、 as many…/much as…等结构中,as不能用which代替。如：

1.Such books as this are too difficult for beginners. 这样的书对于初学的人来说是太难了。

=Books such as this are …

=Books like this are …

2.I live in the same building as he (does). 我和他住再同一座大楼里。

3.He knows as many people as are present at the meeting. 他认识所有到会的人。

4.That day we all got up early as usual. 那天我们和平时一样，都起得很早。

“One of the +复数名词”后面定语从句中谓语单复数情况

这一结构后面的定语从句的谓语动词通常用复数形式，跟定语从句所*近的那个复数名词在数上保持一致。如：

1． That is one of the books that are required for study at school.

2． This is one of the most wonderful novels that have been published since 1990.

3． She is one of the few persons who know Spanish .

4． This is one of the most famous plays that were written in the thirties, 如果one of +复数名词这一结构前面带有the only、the very之类的限定语，后面定语从句的谓语动词则要用单数形式，这是因为定语从句在意义上修饰的是而不是那个复数名词。如：

1.He is the only one of the teachers who knows French in our school.( 修饰

the only one)

He is one of the teachers who know French in our school.( 修饰the teachers)

2.This is the only one of the rooms that is free now. (修饰the only one)

This is one of the rooms that are free now. (修饰rooms)

as与which引导的定语从句

两者均可引导非限制性定语从句，有时可以互换，但下列情况多用as。

1. 关系代词引导的定语从句居句首时。 As we all know, the earth is round.

2. 当与such或the same连用时，一般用

as。 Such books as you tell me are interesting. I have the same plan as you.

3. 当从句和主句语义一致时，用as，反之则用

which。 She has married again, as was expected. She has married again, which was un expected.

4. as在从句中作主语时，后面常接行为动词的被动语态，如be known，be said，

be reported等，如从句中行为动词是主动语态，一般要用which作主语。

She has been late again, as was expected.

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

11.11.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

16.16.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

18.18.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

19.19.I don't like ______ as you read. A. the novels B. the such novels C. such novels D. same novels

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

A. which

B. that

C. whom

D. what

21.21.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

24.24.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

https://www.360docs.net/doc/fd13279783.html,st summer we visited the West Lake, ______Hangzhou is famous in the world.

A. for which

B. for that

C. in which

D. what

26.26.I have bought such a watch _______ was advertised on TV. A. that B. which C. as D. it

27.27.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

28.8.The way ______he looks at problems is wrong.

A. which

B. whose

C. what

D./

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

A. in which

B. with which

C. that

D. for which

30.30.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

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

A. why; that

B.that;why

C. for that;that

D.for which;what

32.32.He is working hard, ______will make him pass the final exam. A.that B.which C.for which D.who

33.33.That is not the way ______I do it. A./ B.which C.for which

D.with which

34.34.I have two grammars, ______are of great use. A. all of which B. either of which C. both of that D. both of which

35.35.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

36.36.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

37.37.This is the magazine _______ I copied the paragraph. A. that B. which C. from that D. from which

38.38.He is not such a man _______ would leave his work half done. A. that B. which C. who D. as

39.39. 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

42.42. 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

44.44. During the days ________, he worked as a servant at the Browns. A. followed B. following C. to follow D. that followed

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

A. that

B. /

C. which

D. it

46.46. 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

47.47. Is _______ some German friends visited last week?

A. this school

B. this the school

C. this school one

D. this school where

48.48. 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