okok云-
定语从句
定语从句（Attributive Clauses）在句中做定语，修饰一个名词或代词，被修饰的名词,词组或代词即先行词。定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出。
关系代词有：who, whom, whose, that, which等。
关系副词有：when, where, why等。
关系代词引导的定语从句
关系代词所代替的先行词是人或物的名词或代词，并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时，从句谓语动词的人称和数要和先行词保持一致。
1）who, whom, that
这些词代替的先行词是人的名词或代词，在从句中所起作用如下：
Is he the man who/that wants to see you?
他就是想见你的人吗？（who/that在从句中作主语）
He is the man whom/ that I saw yesterday.
他就是我昨天见的那个人。（whom/that在从句中作宾语）
2) Whose 用来指人或物，(只用作定语, 若指物，它还可以同of which互换）, 例如：
They rushed over to help the man whose car had broken down. 那人车坏了，大家都跑过去帮忙。
Please pass me the book whose (of which) cover is green. 请递给我那本绿皮的书。
3）which, that
它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，例如：
A prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。（which / that在句中作宾语）
The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作宾语）
关系副词引导的定语从句
关系副词可代替的先行词是时间、地点或理由的名词，在从句中作状语。
1）when, where, why
关系副词when, where, why的含义相当于"介词+ which"结构，因此常常和"介词+ which"结构交替使用，例如：
There are occasions when (on which) one must yield. 任何人都有不得不屈服的时候。
Beijing is the place where (in which) I was born. 北京是我的出生地。
Is this the reason why (for which) he refused our offer? 这就是他拒绝我们帮助他的理由吗？
2）that代替关系副词
that可以用于表示时间、地点、方式、理由的名词后取代when, where, why和"介词+ which"引导的定语从句，在口语中that常被省略，例如：
His father died the year (that / when / in which) he was born. 他父亲在他出生那年逝世了。
He is unlikely to find the place (that / where / in which) he lived forty years ago. 他不大可能找到他四十年前居住过的地方。
限制性和非限制性定语从句
1) 定语从句有限制性和非限制性两种。限制性定语从句是先行词不可缺少的部分，去掉它主句意思往往不明确；非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，例如：
This is the house which we bought last month. 这是我们上个月买的那幢房子。（限制性）
The house, which we bought last month, is very nice.这幢房子很漂亮，是我们上个月买的。（非限制性）
2) 当先行词是专有名词或物主代词和指示代词所修饰时，其后的定语从句通常是非限制性的，例如：
Charles Smith, who was my former teacher, retired last year. 查理u2022史密斯去年退休了，他曾经是我的老师。
My house, which I bought last year, has got a lovely garden. 我去年买的的那幢房子带着个漂亮的花园。
This novel, which I have read three times, is very touching. 这本小说很动人，我已经读了三遍。
3) 非限制性定语从句还能将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数，例如：
He seems not to have grasped what I meant, which greatly upsets me. 他似乎没抓住我的意思，这使我心烦。
Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽，这就叫做蒸发。
说明：关系代词that和关系副词why不能引导非限制性定语从句
介词和关系词及非限定性定语从句
1、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?
2、 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. which D. 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. which C. 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。
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.
慧慧-
1. Don"t talk about such things of __________ you are not sure.
A. which
B. what
C. as
D. those
2. Is this the factory __________ you visited the other day?
A. that
B. where
C. in which
D. the one
3. Is this factory __________ some foreign friends visited last Friday?
A. that
B. where
C. which
D. the one
4. Is this the factory __________ he worked ten years ago?
A. that
B. where
C. which
D. the one
5. The wolves hid themselves in the places __________ couldn"t be found.
A. that
B. where
C. in which
D. in that
6. The freezing point is the temperature __________ water changes into ice.
A. at which
B. on that
C. in which
D. of what
7. This book will show you __________ can be used in other contexts..
A. how you have observed
B. what you have observed
C. that you have observed
D. how that you have observed
8. The reason is __________ he is unable to operate the machine.
A. because
B. why
C. that
D. whether
9. I"ll tell you __________ he told me last week.
A. all which
B. that
C. all that
D. which
10. That tree, __________ branches are almost bare, is very old.
A. whose
B. of which
C. in which
D. on which
11. I have bought the same dress __________ she is wearing.
A. as
B. that
C. which
D. what
12. He failed in the examination, __________ made his father very angry.
A. which
B. it
C. that
D. what
13. We"re talking about the piano and the pianist __________ were in the concert we attended last night.
A. which
B. whom
C. who
D. that
14. The girl __________ an English song in the next room is Tom"s sister.
A. who is singing
B. is singing
C. sang
D. was singing
15. Those __________ not only from books but also through practice will succeed.
A. learn
B. who
C. that learns
D. who learn
16. Anyone __________ this opinion may speak out.
A. that againsts
B. that against
C. who is against
D. who are against
17. Didn"t you see the man __________?
A. I nodded just now
B. whom I nodded just now
C. I nodded to him just now
D. I nodded to just now
18. Can you lend me the novel __________ the other day?
A. that you talked
B. you talked about it
C. which you talked with
D. you talked about
19. Is there anything __________ to you?
A. that is belonged
B. that belongs
C. that belong
D. which belongs
20. ---- “How do you like the book?”
---- “It"s quite different from __________ I read last month.”
A. that
B. which
C. the one
D. the one what
21. Mr. Zhang gave the textbook to all the pupils except __________ who had already taken them.
A. the ones
B. ones
C. some
D. the others
22. The train __________ she was travelling was late.
A. which
B. where
C. on which
D. in that
23. He has lost the key to the drawer __________ the papers are kept.
A. where
B. in which
C. under which
D. which
24. Antarctic __________ we know very little is covered with thick ice all the year round.
A. which
B. where
C. that
D. about which
25. It"s the third time __________ late this month.
A. that you arrived
B. when you arrived
C. that you"ve arrived
D. when you"ve arrived
26. It was in 1969 __________ the American astronaut succeeded in landing on the moon.
A. that
B. which
C. when
D. in which
27. May the fourth is the day __________ we Chinese people will never forget.
A. which
B. when
C. on which
D. about which
28. We are going to spend the Spring Festival in Guangzhou, __________ live my grandparents and some relatives.
A. which
B. that
C. who
D. where
29. The hotel __________ during our holidays stands by the seaside.
A. we stayed at
B. where we stayed at
C. we stayed
D. in that we stayed
30. Is it in that factory __________ “Red Flag” cars are produced?
A. in which
B. where
C. which
D. that
31. It is the Suez Canal __________ separates Asia __________ Africa.
A. which, to
B. where, from
C. that, from
D. that, with
32. Under the bridge, however, almost directly below, __________ was a small canoe, with a boy in it.
A. there
B. where
C. it
D. which
33. He is not __________ a fool __________.
A. such, as he is looked
B. such, as he looks
C. as, as he is looked
D. so, as he looks
34. Is that the reason __________ you are in favour of the proposal?
A. which
B. what
C. why
D. for that
35. He must be from Africa, __________ can be seen from his skin.
A. that
B. as
C. who
D. what
36. He has two sons, __________ work as chemists.
A. two of whom
B. both of whom
C. both of which
D. all of whom
37. I, __________ your good friend, will try my best to help you out.
A. who is
B. who am
C. that is
D. what is
38. He is a man of great experience, __________ much can be learned.
A. who
B. that
C. from which
D. from whom
39. ---- Do you know the town at all?
---- No, this is the first time I __________ here.
A. was
B. have been
C. came
D. am coming
40. 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
41. The two things __________ they felt very proud are Jim"s gold watch and Della"s hair.
A. about which
B. of which
C. in which
D. for which
42. The dinner was the most expensive meal we __________.
A. would have
B. have had
C. had never had
D. had ever had
43. Do you know which hotel __________?
A. she is staying
B. she is staying in
C. is she staying
D. is she staying in
44. There is only one thing __________ I can do.
A. what
B. that
C. all
D. which
45. Who can think of a situation __________ this idiom can be used?
A. which
B. that
C. where
D. in that
46. I have many books, some of __________ are on chemistry.
A. them
B. that
C. which
D. those
47. They were interested __________ you told them.
A. in which
B. in that
C. all that
D. in everything
48. The astronaut did many experiments in the spaceship, __________ much help for knowing space.
A. which we think it is
B. which we think are of
C. of which we think is
D. I think which is of
49. The great day we looked forward to __________ at last.
A. come
B. came
C. coming
D. comes
50. I like the second football match __________ was held last week.
A. which
B. who
C. that
D. /
参考答案：
1—5 AADBA 6—10 ABCCA 11—15 AADAD
16—20 CDDBC 21—25 ACBDC 26—30 AADAD
31—35 CABCB 36—40 BBDBA 41—45 BDBBC
46—50 CDBBC
大鱼炖火锅-
仔细看看我下面给出的内容，你就会看到你需要的：
The Attributive Clause ( I )
1. Definition （定义）
定语从句: 在复合句中,修饰某个名词或代词的从句叫定语从句。
被修饰的词称为先行词(antecedent )．
连接定语从句和先行词的词称为关系词。
2. 关系词：
关系代词(relative pronoun):
who,that ,which, whom,whose 作主语／宾语 / 定语
关系副词(relative adverb): when, where ,why 作状语
3. 关系词的作用
1）连接作用
2）替代作用
3）成分作用
Madame Curie is unforgettable because she is the first female who /that won the Nobel Prize.
4.关系词的选用
关系词的选用是依据先行词在定语从句中的所充当的成分来确定的。
Madame Curie is unforgettable because she is the first female who /that won the Nobel Prize.
Madame Curie is unforgettable because she is a scientist whose discoveries are very important
Madame Curie is unforgettable because she is a scientist whom/that we can learn much from.
Things / places
The Internet is unforgettable because it is a thing that/which has greatly changed our way of life.
The Internet is unforgettable because it is a necessity which /that modern life can"t go without.
The Internet is unforgettable because it is a thing whose functions (功能)are powerful.
5. 在下列情况关系代词只能用that而不用which。
先行词为all, everything, anything, nothing, none, little,few, much等不定代词时。
eg. You must do everything that I do.
2) 先行词被all, every, no, any, little, much, some, just等修饰时。
eg. Is there any question that troubles you much ?
3) 当先行词被序数词或形容词最高级以及the only, the very, the last等修饰时。
eg. James is the best singer that I have ever known.
4) 当先行词是人和物构成的词组时。
eg. They were talking about the people and places
( that ) they had visited.
5) 当句中有who 或which 时,为避免重复。
eg. Which is the book ( that ) he borrowed from the library ?
eg. Who is the person that is talking to our headmaster?
6). 关系代词在从句中作表语时;
eg.My hometown is no longer the village that it used to be.
由关系副词引导的定语从句
关系副词在定语从句中相当于一个介词词组，通常在定语从句中是充当状语的，表示地点、时间或原因状语。
1. Where： 当先行词是表示地点的名词，且从句中缺少地点状语，此时使用where。
The hotel where we stayed wasn"t very clean. in the hotel in which
2. When: 当先行词是表示时间的名词，且从句中缺少时间状语，此时用when。
Do you remember the day when we met? on the day on which Morning is the best time when we practise reading
English aloud. in the morning in which
3.Why: 当先行词是reason，且从句中缺少原因状语，
此时用why 做关系词。
Can you tell me the reason why the little boy cried？for the reason for which
where/when/why= prep.+which
4.在“介词+关系代词”引导的定语句中, 介词在定语句中的位置一般有两种：1). 一些介词既可以放在关系代词的前面，也可以放在从句中。如：
I paid 2 dallors for the pen.
The pen which I paid 2 dollars for was lost.
= The pen for which I paid 2 dollars was lost.
The lady whom he was dancing with stepped on his foot.
= The lady with whom he was dancing stepped on his foot.
2). 在含有介词的动词短语中，介词一般不提前，如：
This is the very boy whom I have been looking for.
The old lady who needs to be taken care of has no children.
直接放在介词后面，不用that 。
先行词指人时介词后用whom, 指物用which。
5. 在“介词+关系代词”引导的定语句中，介词的选择一般采取以下几种方式：
1).根据先行词选择介词，如：
I still remember the day on which she first wore that pink dress
The pencil with which I wrote my homework was broken.
(句中介词with是根据先行词pencil来的。
with the pencil表示“用铅笔写”， 是固定搭配。)
2).根据从句中动词选择介词，如：
The girl about whom I talked with you yesterday will come to our school soon.
(句中介词about是根据词组talk about 来的。)
The hotel at which you stayed last year is being rebuilt now.
(stay at some places)
3).根据句意选择介词，如：
The brave man by whom the tiger was shot is a good hunter.
The clever boy made a hole in the wall, through which he could see what
定语从句的分类：
限制性定语从句和非限制性的定语从句
限制性定语从句不用逗号与主句分开，对所修饰的词起特指或限定的作用，去掉后意思不完整或不太清楚。翻译成中文时，一般把定语从句翻译在先行词之前。
引导限制性定语从句的关系代词有who, whom, whose, that, which, of which和关系副词when, where, why等。
eg. This is the man who helped me.
I was the only person in our office that was invite to the palace ball.
非限制性的定语从句和主句之间往往用逗号分开，只对被修饰的词语或主句起补充说明的作用，去掉后对句意影响不大。翻译时通常把定语从句翻译在先行词后边，作为附加说明。
引导非限制性定语从句的关系代词有who,whom, whose, which, as和关系副词when, where，一般不用that 引导。
eg. I have two sisters, who are both doctors.
Last Sunday they reached Shanghai, where a meeting was holding.
定语从句的考查热点
1.间隔式定语从句
定语从句一般紧跟在先行词之后，但定语从句先
行词之间有时会插入别的成分，构成先行词与定
语从句的隔离。
eg. This is the article written by him that I spoke to you about.
He was the only person in this country that was invited.
(1). 因定语从句过长，为使句子保持平衡，通常定语从句和其所修饰的名词或代词分开。
eg. The film brought the hours back to me when I was taken good care of in that faraway villiage.
(2). 在定语从句中使用“插入语”以增加句子的灵活性。
eg. Kate was always speaking highly of her role in the play, which, of course, made the others unhappy.
The pen I thought I had lost is on my desk, right under my nose.
2.定语从句中的谓语动词与先行词保持一致。
当引导定语从句的关系代词在从句中做主语时，定
语从句的谓语动词的数的形式应与先行词保持一致。
eg. I, who am your classmate, will try my best to help you.
He, who is your classmate, will try his best to help you.
注意句式：
one of + 复数名词+关系代词+复数动词
the (only/very) one of +复数名词+关系代词+单数动词
He is one of the students who have made great progress.
Tom is the only one of my friends who has been abroad.
Where引导的地点状语从句 与定语从句的区别:
1.Where there is a river, there is a city.= In the place where there is a river, there is a city.
2. You should make it a rule to leave things where you can find them again.
= You should make it a rule to leave things in the place where you can find them again.
3. Go (to the place) where you like to go.
当where 引导的地点状语从时, 可换成含有定语从句
where 引导的从句 ,等于 in /to/ at the place where
wpBeta-
如果一个句子充当了定语，那么我们称之为定语从句。
看这样两个句子：
1) The man is my English teacher.
2) I met him in the street.
如果想把这两个句子合并成一个句子，我们可将句2) 转换成定语从句来修饰the man，即：
The man that / who / whom I met in the street is my English teacher.
这个句子中的that / who / whom I met in the street 就充当了the man的定语，它就是定语从句；而被修饰的the man叫做先行词。另外，句2)中的him换成了关系代词that / who / whom，并放在了定语从句的最前面，把that, who, whom等词叫做引导词。
例句呈现
1. Is he the man that / who sells the dog?
2. Do you know the boy whom / who / that I talked with just now?
3. She was not on the train that / which arrived just now.
4. What do you think of the photos that / which I took in the park?
5. The book whose cover is green was lost yesterday.
6. The first place that we visited in Beijing was the Great Wall.
7. It was the largest map that I ever saw.
8. I have read all the books that you lent me.
9. Is there anything else that I can do for you?
10. They talked about the people and things that they remembered in the old days.
11. Who is the man that shook hands with you just now?
小结归纳
关系代词that, which, who, whom, whose都可以引导定语从句，使用它们时应该考虑两点：
1. 先行词是“人”还是“物”；
2. 关系代词在定语从句中所充当的成分。
首先，当先行词是“人”时：
1) 关系代词在定语从句中作主语时，用that / who，如：句1；
2) 关系代词在定语从句中作宾语时，用whom / that / who，如：句 2。
其次，先行词如果是“物”时：可用关系代词that / which来充当主语或者宾语，如：句3、4。
综上所述， that既可以指“人”又可以指“物”，而which只能指“物”，who / whom只能指“人”；who / that / which 都可以作主语或宾语，而whom只能作宾语；此外， whose 在定语从句中放在某一个名词或代词前作定语，如：句5。特别需要指出的是：当关系代词作宾语时常常省略，而作主语时则不能省略，如：句2、4、6、7、8、9、10中的关系代词可以省略；而句1、3、11中的关系代词不可以省略。
另外，还有一些情况一般只用that引导定语从句：
(1) 当先行词被序数词或形容词的最高级修饰时，如：句6、7；
(2) 当先行词被all, some, any, no, little, much等修饰时，如：句8；
(3) 当先行词是everything, anything, nothing等不定代词时，如：句9；
(4) 当先行词既有人又有物时，如：句10；
(5) 当主句以疑问词who或which开头时，如：句11。