第四章 定语从句
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、as 、but (文语, 置于否定词之后=that/who…not…, \没有……不……\在从句中作主语，宾语)
常用的关系副词（在从句中只作状语）: when、why、 where 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. I'd like a room whose window looks out over the sea. 定语从句解题三步曲： 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、宾语或状语）； 第三选择合适的关系词。
一、关系代词的基本用法
1、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：
A letter that/which is written in pencil is difficult to read. (主语) Do you know the gentleman that/who spoke just now? You can take anything ( that) you like. （宾语） Here is the man ( who/whom/that ) you want to see.
She's no longer the girl ( that) she used to be before.（表语） 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。 = Our hometown is not what it used to be.
2、which: 指物；在定语从句中作主语，宾语，表语，定语。如： The book which/that was on the desk was bought by my father.（主语） The book (which/that) I bought yesterday is very interesting.（宾语） He was proud, which his brother never was. （表语）
Tom spent four years in college, during which time he learned French.（定语） 3、who, whom, whose:
who: 主格, 在从句中作主语，在口语或非正式用法中作宾语; 只可指人 whom: 宾格，在从句中作宾语; 只可指人
whose: 属格，在从句中作定语，可指人也可指物。 I like the students who/that work hard. （主语）
All who heard the story were amazed. (代词如he, they, any, those, all, one等后多用who.) Chaplin, for whom life had once been very hard, was a success as an actor. （宾语） He's a man from whom we should learn.
= He's a man (whom/who/that) we should learn from.
比较：He is the student whom you think to be worthy of your praise. He is the student who you think is worth praising.
A child whose parents are dead is called an orphan.（指人） I'd like a room whose window faces south. （指物） =I'd like a room of which the window faces south. =I'd like a room the window of which faces south.
There is a teapot shaped like a Chinese duck, out of whose mouth tea is supposed to come 关系代词作介词宾语:
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.）
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? The beginning of agriculture was a big step in human progress with which nothing could compare until our information age.
In the dark street, there wasn't a single person to whom she could turn for help. Is this the factory to which you paid a visit last week? Is this factory the one to which you paid a visit last week?
在这种“介词+关系代词”结构中，关系代词若是表示人的意义，就只能用whom ；关系代词若是表示事物的意义，
就只能用which 。而这种结构中较难解决的问题是介词的选择问题，因为这个问题的解决取决于多种因素：动词与介词的搭配、名词与介词的搭配、形容词与介词的搭配，等等。总之，要依从句的具体需要而定。例如： ① 动词与介词的搭配
He has found a good job for which he is qualified .（ qualify + 名词+ for \使…具有…资格\）他找到了一份他能胜任的工作。
The man to whom you talked just now will chair the meeting tomorrow . （ talk to + 名词 \与某人谈话\） 你刚才与他谈话的那个人明天主持那个会议。 ② 名词与介词的搭配
They are still living in the little house in which they've been lived for 15 years . （ in the house \在屋子里\） 他们现在还住在他们已住了15年的那个小房子里。
We've worked out a method by which our production can be raised on a large scale.( by a method通过某种方法) 我们已研制出了一个能大规模提高生产的方法。
She didn't realize the extent to which she had been distracted .（ to extend \到某种程度\） 她没有意识到她心烦意乱的程度。
③ 形容词与介词的搭配
The secretary with whom the boss is not happy will be fired for her inefficiency . (happy with \对…表示满意\老板对其不满意的那个秘书将由于她没有工作效率而被解雇。
I've found the job for which I've been eager for a long time.（ eager for \渴望得到…\） 我已找到了我渴望已久的那份工作。
This is the girl whom they are looking after. (介词after与look构成固定词组，不可前置。look at, look for, look after, take care of等)
4、as 的用法:(as 引导定语从句, 在定语从句中作主语、宾语、表语)
①如为限制性的，多用于the same …as ; the same as；such …as …; as many/much as；so …as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连用, 在从句中用作表语, 先行词是same.)
.---Why didn't 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. Don't do such things as you are not sure about. There is no such place as you dream of in all this world. 比较：I live in the same house that he used to live in. I'm 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）
②如为非限制性的，多单独引导一个定语从句，这种定语从句可置于句首，句中或句尾，译为\正如，这一点\。（动词常为know, see, expect, point out, etc.）
As we all know, smoking is harmful to one's health . (as 作宾语) =As is known to all, smoking is harmful to one's health . （as 作主语） =It's known to all that smoking is harmful to one's health .
=Smoking is harmful to one's 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)
二、 关系副词引导的定语从句
1、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 last 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） Next month, when you will be in your hometown, is just around the corner. I still remember the days which/that we spent together. （作宾语） Next winter which/that you'll spend in Harbin, I'm sure, will be exciting.
I shall never forget the day when Shenzhou Ⅴ was launched, which has a great effect on my life. There are occasions when joking is not permissible.
2、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 where 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）
The treatment will continue until the patient reaches the point where he can walk correctly and safely. I think you have got to the point where a change is needed, or you would fail. This is the park which/that they visited last year. （作宾语）
Not having been there before, he simply had no idea about the place, which everyone says is worth visiting.
3、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；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 / for which / (that) he didn't attend the meeting was that he was ill. I don't believe the reason (that/which) he gave me. （作宾语） Have you asked him the reason that may explain his success? （作主语） Ex.) He was late. That's because he got up late. He got up late. That's why he was late.(表语从句)
(the reason) why/for which he was late. (定语从句)
4、当先行词为way时，定语从句常用that, in which,或how引导，that常可以省略。 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 do the experiment in the way （that/which）I have shown you.
三、 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 China's capital for 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）
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, etc.
He studied hard at school when he was young, which leads to his success in his later life. Tom's father, who arrived just now, is a famous scientist.
They set up a separate state of their own, where they would be free to keep Negroes as slaves. He was proud, which his brother never was.
2017年江苏省专转本英语语法讲解及练习(含答案)
