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定语从句详解
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．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 Whom which 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.
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．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 Whom which 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.
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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
P.S ：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；在从句中作主语时,不能省略;
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,something,everything,none等;
②先行词有最高级修饰，有序数词修饰及last,any,only,few,much,no,some,very等词修饰;
③先行词既有人又有物时。
④句中已有who时,为避免重复，用that代替。
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.这部电影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thesame…as,such…as结构中。
e.g.I want the same shirt as myfriend’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 along speech,as we expected.
He made along 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 everyday,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 GradeThree 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.
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 afriend of hers.
A.whose B.who C.whom D.which
3.Because of my poormemory,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 sea shore 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.towho
10.The man____you are going to make friends is my father’s neighbour.
A.with whom B.when C.towhom 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.ofwhom B.fromwhom C.aboutthat D.who
14.In fact the Swede did not understand the three questions____were asked in French. A.where B.who C.inwhich 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 air port. A.mostofthem B.mostofthat C.mostofwhom D.mostofthose
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.theone
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.onwhich
22.Near by were two canoes____they had come to the island.
A.which B.inwhich 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.towhom D.formwhom
26.Is this school____we visited three years ago?
A.theone B.which C.that D.where
27.Is this the school____we visited three years ago?
A.theone B.where C.inwhich D./
1、关系代词：who,whom,whose,which,that,as
2、关系副词：when,where,why
P.S ：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；在从句中作主语时,不能省略;
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,something,everything,none等;
②先行词有最高级修饰，有序数词修饰及last,any,only,few,much,no,some,very等词修饰;
③先行词既有人又有物时。
④句中已有who时,为避免重复，用that代替。
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.这部电影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thesame…as,such…as结构中。
e.g.I want the same shirt as myfriend’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 along speech,as we expected.
He made along 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 everyday,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 GradeThree 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.
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 afriend of hers.
A.whose B.who C.whom D.which
3.Because of my poormemory,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 sea shore 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.towho
10.The man____you are going to make friends is my father’s neighbour.
A.with whom B.when C.towhom 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.ofwhom B.fromwhom C.aboutthat D.who
14.In fact the Swede did not understand the three questions____were asked in French. A.where B.who C.inwhich 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 air port. A.mostofthem B.mostofthat C.mostofwhom D.mostofthose
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.theone
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.onwhich
22.Near by were two canoes____they had come to the island.
A.which B.inwhich 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.towhom D.formwhom
26.Is this school____we visited three years ago?
A.theone B.which C.that D.where
27.Is this the school____we visited three years ago?
A.theone B.where C.inwhich D./
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定语从句,用来修饰某个名词,常常紧跟在被修饰的名词之后.例:There are many people who speak Chinese.在这里who speak Chinese就做了people的定语从句
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问题英文
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http://baike.baidu.com/view/56536.htm
自己看吧,够详细了~
自己看吧,够详细了~
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