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1、学习必备 欢迎下载 高中英语定语从句详解.概念：(1)定语从句：在主从复合句中用作定语的从句叫定语从句。定语从句一般紧接在先行词(antecedent)后面。(2)先行词：被定语从句修饰的成份。先行词可以为一个词，短语，或整个主句。(3)引导定语从句的词叫关系词，分为关系代词和关系副词。关系词的作用：1)引导定语从句，连接主句和从句，相当于一个连词；2)必在从句中作某个句子成份（可以做主语，宾语，表语，定语，状语）常用的关系代词:that、which、who、whom、whose,当关系代词在定语从句中做宾语时，关系代词可以省略。常用的关系副词（在从句中只作状语）:when（时间状语）、why
2、（原因状语）、where（地点状语）可以修饰人的关系代词：that,who,whom,whose 可以修饰事的关系代词：that,which,as,whose,The student who answered the question was John.I know the reason why he was so angry.The boy(whom)you are talking to is my brother.Id like a room whose window faces the sea.定语从句三步：第一找出先行词；第二看先行词在定语从句中的语法功能（做主语、宾语、表语或状语）；
3、学习必备 欢迎下载 第三选择合适的关系词。.几个关系代词的基本用法：that:可指人或物；在定语从句中作主语，宾语，表语。(指人时，相当于 who或 whom；指物时，相当于 which)(一般不用于非限制性定语从句;不可置于介词后作宾语)如：1.A letter that/which is written in pencil is difficult to read.(主语)2.Do you know the gentleman that/who spoke just now?3.You can take anything(that)you like.（宾语）4.What is the qu
4、estion(that/which)they are talking about?5.Here is the man(who/whom/that)you want to see.6.Shes no longer the girl(that)she used to be before.（表语）7.Our hometown is no longer the one(that)it used to be.（=Our hometown is not the same as it used to be.=Our hometown is different from what it used to be。
5、=Our hometown is not what it used to be.）which:指物；在定语从句中作主语，宾语。如：1.The book which/that was on the desk was bought by my father.（主语）2.The book(which/that)I bought yesterday is very interesting.（宾语）who,whom,whose:who:主格,在从句中作主语，只可指人 whom:宾格，在从句中只能作宾语;只可指人 紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定语从句的词叫
6、关系词分为关系代词和关系副词关系词的作用引导定语从句连接主句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定语从句三步第一找出先行词第二看先行词在定语从句中的语法功能做主语宾语表语或状语学习必备欢迎下载第三选择合适的关系词几个关系代句不可置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主学习必备 欢迎下载 whose:表所属关系，在从句中作定语。译为：某人的，某物的 wh
7、ose+名词=the+n.+of which (某物的)the+n.+of whom (某人的)I like the students who/that work hard.（主语）The boy(that/who/whom)we saw yesterday is Tom.I know the girl whose father is a teacher.(whose father=the father of whom)A child whose parents are dead is called an orphan.（指人）(whose parents=the parents of who
8、m)Id like a room whose window faces south.（指物）(whose window=the window of which)关系代词作介词宾语(在定语从句中，介词提前时，介词后：表人用 whom；表物用 which)关系代词在定语从句中用作介词宾语时,介词可放于从句之首,也可放于从句之末.但以放于句首较为正式.（介词前置，必须注意不影响动词词组的含义。关系代词 who 和 that 用作介词宾语时,介词必须放在句末.）The man(whom/who/that)my mother is talking with is Mr Black.=The man wi
9、th whom my mother is talking is Mr Black.This is the book for which you asked.=This is the book(that/which)you asked for.Do you know the person with whom I shook hands？=Do you know the person(whom/who/that)I shook hands with?紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定语从句的词叫关系词分为关系代词和关系副词关系词的作用引导定语从句连接主
10、句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定语从句三步第一找出先行词第二看先行词在定语从句中的语法功能做主语宾语表语或状语学习必备欢迎下载第三选择合适的关系词几个关系代句不可置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主学习必备 欢迎下载 The library from which we can borrow books is very big.This is
11、 the book about which I told you just now.as 的用法:(as 引导定语从句,在定语从句中作主语、宾语、表语)如为限制性的，多用于 the same as;the same as(与相同)；such as（如此，这样）;as many/much as（和一样多）；so/as as（与一样）等结构中。如：I have the same book as you(have).我有一本和你的一样的书。Her attitude to him was quite the same as it had always been.(关系代词 as和指示代词 same 连
12、用,在从句中用作表语,先行词是 same.).-Why didnt you mention that in face of the police just now?-I thought it was such a minor detail as was hardly worth mentioning.We will only discuss such problems as have something to do with our own interests.Dont do such things as you are not sure about.There is no such plac
13、e as you dream of in all this world.比较：I live in the same house that he used to live in.Im wearing the same shirt as you wore yesterday.比较：Here is so big a stone as no one can lift.（定语从句）Here is so big a stone that no one can lift it.（结果状语从句）如为非限制性的，as 还可以单独引导一个定语从句，代替整个主句，这种定语从句可置于句首，句中或句尾，译为正如，这一点
14、。（动词常为 know,see,expect,point out,etc.）紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定语从句的词叫关系词分为关系代词和关系副词关系词的作用引导定语从句连接主句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定语从句三步第一找出先行词第二看先行词在定语从句中的语法功能做主语宾语表语或状语学习必备欢迎下载第三选择合适的关系词几个关系代句不可置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语
15、只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主学习必备 欢迎下载 As we all know,smoking is harmful to ones health.(as 作宾语)=As is known to all,smoking is harmful to ones health.（as 作主语）众所周知：As we all know,Its well-know(to us all)that=Its known to all that smoking is harmful to ones health.=Smoking is harmful to on
16、es health,as we all know.（as 作宾语）=Smoking,as we all know,is harmful to one health.He was a foreigner,as I knew from his accent.(宾语,先行词是前面整个句子).关系副词(when,where,why)引导的定语从句,它们后面的句子完整，只缺状语，它们都可以等于 介词+which,其中 why 只等于 for which.When 指时间，在定语从句中作时间状语。其先行词是表时间的名词（如：time,day,week,tear,month,etc.）He came las
17、t night when I was out.We will put off the picnic until next week,when the weather would be better.注意：先行词为时间名词，可用 when引导定语从句，when在定语从句中作状语；还可以用 which或 that 引导，which或 that 在从句中作主语或宾语。比较:I still remember the day when/on which my brother joined the army.（作状语）紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定语从句的
18、词叫关系词分为关系代词和关系副词关系词的作用引导定语从句连接主句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定语从句三步第一找出先行词第二看先行词在定语从句中的语法功能做主语宾语表语或状语学习必备欢迎下载第三选择合适的关系词几个关系代句不可置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主学习必备 欢迎下载 I still remember the days which
19、/that we spent together.（作谓语 spent 的宾语）Next winter which/that youll spend in Harbin,will be exciting.（宾语）I shall never forget the day when Shen Zhou was launched.There are occasions when joking is not permissible.Where 指地点，在定语从句中作地点状语。其先行词是表示地点的名词，如：place,school,factory,room,etc.This is the place wh
20、ere I was born.I live in the room where/in which he used to live.注意：先行词是地点名词，定语从句可用 where引导，还可用 which 或 that引导，which/that 在从句中作主语或宾语。比较:This is the factory where/in which he worked last year.（作状语）This is the park which/that they visited last year.（作宾语）Why 指原因，在定语从句中作原因状语。先行词为 reason 时，可用 for which指代
21、；当关系词在从句中作主语或宾语时，则用 which 或 that 引导。如：The reason why+定语从句 is that+表语从句（的原因是）The reason why/for which/(that)he didnt come to school was that he was ill.I dont believe the reason(that/which)he gave me.（作宾语）He asked me the reason that can explain my success.（作主语）紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定
22、语从句的词叫关系词分为关系代词和关系副词关系词的作用引导定语从句连接主句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定语从句三步第一找出先行词第二看先行词在定语从句中的语法功能做主语宾语表语或状语学习必备欢迎下载第三选择合适的关系词几个关系代句不可置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主学习必备 欢迎下载 He was late.Thats because h
23、e got up late.(Thats because+原因)那是因为 He got up late.Thats why he was late.(表语从句)（Thats why+结果）那是的原因 (the reason)why/for which he was late.(定语从句)当先行词为 way时，定语从句常用 that,in which,或省略引导词 way后的定语从句 的引导词不用时较多。但如果关系词在句中作主语或宾语时，则用 which 或 that 引导。如:This is the way(that)/（in which）I do such things.比较:Please
24、do the experiment in the way（that/which）I have shown you.限制性定语从句与非限制性定语从句的区别：1.形式上，非限制性定语从句往往用逗号隔开。2.语法上，非限制性定语从句一般不用 that.3.语义上，限制性定语从句与先行词关系紧密，起限定作用，如果去掉了这个定语从句，整个句子就不完整或者会改变意思；而非限制性定语从句与先行词关系不是很紧密，对先行词起补充说明或描述的作用。This is the book I like best.这就是我最喜欢的那本书。Beijing,（which has been Chinas capital for
25、more than 800 years,）is rich in cultural and historic relics.北京是中国八百年之久的古都，它有着丰富的文化和历史遗产。4.翻译时，限制性定语从句可译为一句（较短的一般译为的字结构）；而非限制性定语从句可译为两句。（见上句翻译）紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定语从句的词叫关系词分为关系代词和关系副词关系词的作用引导定语从句连接主句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定语从句三步第一找出先行词第二看先行
26、词在定语从句中的语法功能做主语宾语表语或状语学习必备欢迎下载第三选择合适的关系词几个关系代句不可置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主学习必备 欢迎下载 比较:He has a sister,who is a musician.He has a sister who is a musician.引导非限制性定语从句的关系代词，指人时用 who,whom,whose,指物时用which,whose;关系副词 when，where,why,e
27、tc.1.He studied hard at school when he was young,which leads to his success in his later life.（which 代替整个前面整个主句）2.Toms father,who arrived just now,is a famous scientist.3.They set up a separate state of their own,where they would be free to keep Negroes as slaves.4.He was proud,which his brother nev
28、er was.几个易混淆的关系代词的比较:that&which:在定语从句中，which 和 that 在指代事物时，一般可以互换使用，但并非在任何情况下都是这样，这里介绍宜用 that,而不宜用 which 的情况.只能用 that 的情况：先行词为 much,little,none,all,few,every(thing),any(thing),no(thing),the one等不定代词或受其修饰时;1.We should do all that is useful to the people.2.Theres nothing that can be said about it.3.Do
29、 you mean the one that was bought yesterday?先行词被 the only,the very修饰时;1.The only thing that we could do was to wait.紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定语从句的词叫关系词分为关系代词和关系副词关系词的作用引导定语从句连接主句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定语从句三步第一找出先行词第二看先行词在定语从句中的语法功能做主语宾语表语或状语学习必备欢
30、迎下载第三选择合适的关系词几个关系代句不可置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主学习必备 欢迎下载 2.Thats the very word that is wrongly used.比较*This is one of the best novels that were published last year.*This is the only one of the best novels that was published last
31、 year.先行词是序数词时或被序数词修饰时,包括 the last,the next;1.When we talk about Wuxi,the first that comes into mind is Tai Lake.2.This is the third film that has been shown in our school this term.先行词是最高级或被最高级修饰时;1.This is the best that can be done now.2.The most important thing that should be done right now is ho
32、w to stop him from going on.先行词既有人又有物,只用 that.如：1.The writer and his novel that you have just talked about is really well known.2.The rider and his bike that had run over an old woman were held up by the police.被修饰词为数词时.1.Yesterday I caught two fish and put them in a basin of water.Now you can see t
33、he two that are still alive.如果有两个从句，其中一个关系代词已用 which,另一个关系代词宜用 that，以避免语言的单调或重复。Edison built up a factory which produced things that had never been seen before.紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定语从句的词叫关系词分为关系代词和关系副词关系词的作用引导定语从句连接主句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定
34、语从句三步第一找出先行词第二看先行词在定语从句中的语法功能做主语宾语表语或状语学习必备欢迎下载第三选择合适的关系词几个关系代句不可置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主学习必备 欢迎下载 主句是以 who或 which 开头的疑问句时，关系代词宜用 that，以避免重复。1.Which is the book that you like best?2.Who is the man that is standing at the gate?
35、主句是 There be 结构，修饰其主句的定语从句宜用 that 作关系代词.如：1.There is still a seat in the corner that is still free.先行词在从句中做表语时 1.He is not the young man that he was 30 years ago.2.My home village is no longer the place(that)it used to be.定语从句中宜用 which而不宜用 that 的情况:当关系代词的前面有介词时.1.A zoo is a park in which many kinds
36、of animals are kept for exhibition.2.Is this the room in which Mr.White lives?在非限制性定语从句中.1.Crusoes dog,which was are now very old,became ill and died.2.More and more people are beginning to learn English,which is becoming very popular in our country.(which指代主句)在一个句子中有两个定语从句，其中一个定语从句的关系代词用了 that,另一个宜
37、用 which.1.Let me show you the novel，that I borrowed from the library which was newly open to us.2.At the station I bought some magazines that might help me to pass the time on the train and which I could pass on to others when I finished them.紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定语从句的词叫关系词分为关系代词和关
38、系副词关系词的作用引导定语从句连接主句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定语从句三步第一找出先行词第二看先行词在定语从句中的语法功能做主语宾语表语或状语学习必备欢迎下载第三选择合适的关系词几个关系代句不可置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主学习必备 欢迎下载 当关系代词后面带有插入语时.1.Heres the English grammar wh
39、ich,as I have told you,will help improve your English.先行词本身是 that,宜用 which.Whats that which she is looking at?先行词是 those+复数名词.A shop should keep a stock of those goods which sell best.as&which:as&which 引导非限制性定语从句的区别：位置的不同：Which（放句中）引导的定语从句只置于所限制的句子后；as 位置较灵活，也就是说 as可置于所限制的句子前面；插在句子中或放在句子后。如：1.He was
40、 late again,which made his teacher very angry.2.Jack,as you know,is an honest man.或 Jack is an honest man,as you know.或 As you know,Jack is an honest man.先行词的不同：as引导非限制性定语从句时，其先行词多为一个句子；which 引导非限制性定语从句时，其先行词可以是一个词，一个短语或一个句子。He was proud,which his brother never was.（先行词是一个词）She was very patient towa
41、rds the children,which her husband seldom was.He was proud,which I dislike very much.（先行词是一个句子）紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定语从句的词叫关系词分为关系代词和关系副词关系词的作用引导定语从句连接主句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定语从句三步第一找出先行词第二看先行词在定语从句中的语法功能做主语宾语表语或状语学习必备欢迎下载第三选择合适的关系词几个关系代句不可
42、置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主学习必备 欢迎下载 He is an honest man,as is known to all.He was a foreigner,as I know from his accent.as 一般译为正如 就像，这一点 as we all know；as you know;as is known to all;as you see;as we can see;as has been expected
43、;as we have imagined.The same as 与 the samethat 的区别 The same as 指的是同一类事物,例如 She bought the same shirt as I wear.The same that 指的是同一个事物，例如 The police found the same car that I lost last week.紧接在先行词后面先行词被定语从句修饰的成份先行词可以为一个词短语或整个主句引导定语从句的词叫关系词分为关系代词和关系副词关系词的作用引导定语从句连接主句和从句相当于一个连词必在从句中作某个句子成份可以做句中只作状语时间状语原因状语地点状语可以修饰人的关系代词可以修饰事的关系代词定语从句三步第一找出先行词第二看先行词在定语从句中的语法功能做主语宾语表语或状语学习必备欢迎下载第三选择合适的关系词几个关系代句不可置于介词后作宾语如主语宾语表语指物在定语从句中作主语宾语如主语宾语主格在从句中作主语只可指人宾格在从句中只能作宾语只可指人学习必备欢迎下载表所属关系在从句中作定语译为某人的某物的名词某物的某人的主