[听课日记]定语从句的归纳

一．几个基本概念
1.定语从句的定义：用作定语的从句叫定语从句。
2.先行词：被定语从句所修饰的名词或代词。
3.定语从句的位置：紧跟先行词（名词或代词）之后。
4.引导词：引导定语从句的词（包括关系代词和关系副词）。（1）关系代词：that/who/whom/which/as （2）关系副词：when/where/why
5.引导词的位置：位于定语从句之前（先行词之后）。【as除外】
6.引导词的功能（作用）：（1）连接先行词和定语从句。（2）在定语从句中充当一定的成分（关系代词充当主语或宾语，关系副词充当状语）。
7.定语从句的类型：（1）限定性定语从句（主句和定语从句之间无逗号）。
① 直接由引导词引导定语从句 The man who you’re talking to is my friend. ② 由介词+关系代词（whom/which）引导 The man to whom you’re talking is my friend. I need a pen with which I can write a letter. =I need a piece of paper on which I can write a letter.
介词的选用可根据从句中的相关词组确定，该介词通常可以放在关系代词之前，也可放在从句之尾。
例如： The man (who/whom/that) I talked about at the meeting is from Beijing University. =The man about whom I talked at the meeting is from Beijing University.
The palace (which/that) I often pay a visit to was built in the 17th century. =The palace to which I often pay a visit was built in the 17th century.
（2）非限定性定语从句（主句和定语从句之间用逗号隔开）。
① 直接由引导词引导定语从句。
② 由介词+关系代词（whom/which）引导。 I live in a house far away from the city, in front of which is a big tree. There is an apple tree standing at the gate, on which are many apples. This is the man to whom I gave the book.
③ 由“代词/名词+of+whom/which”或“of which/ whom +名词/代词”(先行词指人用whom,指物用which)引导。One, some, any, none, all, both, several, many, most, neither, either等词、数词、分数或百分比与of whom或of which连用。 He has five children, two of whom are abroad. (比较：He has five children, and two of them are abroad.) We have three books, none of which is/are interesting. (比较：We have three books, but none of them is/are interesting.)
除why和that不能引导非限定性定语从句外，其余引导词都可以，用法同限定性定语从句一样。但要注意以下区别。
1.在形式上非限定性定语从句与主句有逗号隔开。
2.非限定性定语从句的作用：它只是补充说明先行词的情况，翻译时可译成两个句子。
The engineer, whose leg was badly hurt, was quickly sent to hospital. （那位工程师被很快送往医院，其腿部受了重伤）
The engineer whose leg was badly hurt was quickly sent to hospital. （那位腿部受了重伤的工程师被很快送往医院）
3.在非限定性定语从句中，任何引导词都不能省略（包括引导词在此定语从句中充当宾语在内）。指人做主语时只能用who, 做宾语时用whom; 指物做主语，宾语都用which; 关系副词用when或where，也不能省略。
The man, ______ is sitting on the chair, is my father.
The woman, _______ I met yesterday, is my English teacher.
The city, _______ is far away, is very beautiful.
He went to America, ______ his parents live.
He joined the Army yesterday, ______ I left, too.
4.whose引导非限定性定语从句： The house, whose window faces south, is mine. =The house, the window of which faces south, is mine. ＝The house, of which the window faces south, is mine.
二.定语从句中关系代词和关系副词的基本用法
1.who/that指人是主格在定语从句中代替先行词，又作定语从句的主语，不能省略。
Do you know the gentleman who/that is sitting there?
2.whom/who/that指人是宾格，在定语从句中代替先行词，又作定语从句的宾语（动宾或介宾）。 ① 当作动宾（动词后接宾语）时，关系代词可省略。
Do you know the gentleman (whom/who/that) we met just now?
② 当作介宾（介词后接宾语）时：介词不提前时，关系代词可省略；
介词提前时，关系代词不可省，即介词＋whom(指人时介词后的关系代词只能用whom)。
The man (whom/who/that) I spoke with is my teacher.
The man with whom I spoke is my teacher.
※注：固定的动词短语（动词+介词）如look for, take care of等不能把动词与介词拆开，既介词不能提至引导词前。
She is the right girl (who/whom/that) we are looking for.
3.whose: 指人或物，是所有格“…的”形式。
Whose+n.一起在定语从句中充当主语、宾语（动宾或介宾）即先行词的什么东西怎样了，whose不能省略。。
Whose+n. = the +n. + of which/whom= of which/ whom+ the =n. I didn’t find the desk whose leg was broken. （主语）
He is the student whose pencil I broke yesterday. （动宾）
The boss in whose company I work is very kind. （介宾）
4.which/that 指物，指代先行词且在定语从句中作主语或宾语（动宾或介宾）。
① 当作动宾时，关系代词可省略。
② 当作介宾时：介词不提前时，关系代词可省略；介词提前时，关系代词不可省，即介词＋which(指物时介词后的关系代词只能用which)。
The house which/that was destroyed in the earthquake is weak.
The pen (which/that) you found yesterday is mine.
The games (that/which) the young men competed in were difficult.
The games in which the young men competed were difficult.
※注:介词+关系代词即介词+whom/which(先行词指人用whom，指物用which)。 ※
5.as指人或物，在定语从句中可作主语，宾语，表语或状语，不能省略。
主要用于 “the same …as…；such …as…；so …as…；as … as…；as follows”固定结构中，形式固定此时的引导限定性定语从句。
要用as代替who(m), which, 或that引导定语从句：
Such people as knew Hill thought he was honest.
Such people as Hill knew thought he was honest.
My hometown is no longer the same as it was.
Here is so big a stone as no one can lift.
The child knows as much as grow-ups (know).
I’d like to have the same books as are used in your school.
He is not such a person as I expected.
He will marry as pretty a girl as he can find.
※注：which和as可引导非限定性定语从句：可以指代主句中的一部分或整个句子的内容，which和as都可以指代主句中的一部分或整个句子的内容，有时可以互换。因此，当as/which指代前面的整个句子，或前句中的部分内容作定语从句的主语时，谓语用单数．
Our team lost the game, as/which was reported in the newspaper. She was terrified, as/which I could see from her eyes. He married her, as/which was natural.
区别：
①as引导的非限制性定语从句可以放在主句前面、插在主句中间或放在主句末尾；而which引导的非限制性定语从句只能放在主句后面。 He married her, as/which was natural. =As was natural, he married her. Mark Twin is a great writer, which/as is known to all. =As is known to all, Mark Twin is a great writer
三. 值得注意的几个问题：
第一. 当先行词是物时，关系代词(that/which)只用that的情况。
1.当先行词被序数词或形容词的最高级修饰时。
This is the best film that has been shown this year. This is the first book (that) I borrow from the library.
※He is the first student that/who came to school today.
2.当先行词为两个或两个以上分别指人和物的名词时。
He talked about the teachers and the school (that) he had visited.
3.当先行词本身是all的，用that。
(all that=what) All that (what) I want to say to you is “Thank you”. =All (what) I want to say to you is “Thank you”.
Go over all that (what) we learned. =Go over all (what) we learned.（that在定语从句中充当宾语可以省略）
4.先行词为something, anything, nothing, everything, thing时，用that.
I’ll tell you anything (that) I know.
5.当先行词前有all, much, little, many, (a) few, every, some, any, no, only, the very, one of, the only, the last, the next等修饰语时。
This is one of the books (that) I’m very interesting in.
※ This is one of the books in which I’m very interesting.
This is the only book (that) I read. He is the only one of the boys that likes playing the piano.
the glasses that were on the table fell off onto the floor.
6.（人，物），当先行词在以who或which开头的特殊疑问句中时，用that引导以避免混淆．
Who is the man that is talking with the lady?
Which of you that know the answer can come to the front?
7.当先行词是在定语从句中作表语时，用that．
He likes the girl that she used to be.
第二. 当先行词是物时，关系代词(that/which)只用which的情况。
1.作介宾且介词置于引导词之前时．
The room in which he lives is very large.
2.引导非限定性定语从句时（主，宾都用which,　都不能省略）．
Football, which is a very interesting game, is played all over the world.
The house, which I visited yesterday, is very large.
3.which指整个句子的内容或部分内容，引导非限定性定语从句．
He always makes fun of me, which upsets me.
第三.　其他特殊情况．
1.先行词是these, those指人时，关系代词只用who.
Those who are playing over there are my students.
2.先行词是人称代词(he, she…)时，关系代词只用who.
He who doesn’t reach the Great Wall is not a true man.
3.不定代词someone, anyone, everyone, no one, somebody, anybody, everybody作先行词时，关系代词用who.
Anybody who breaks the rules would be punished.
4.①先行词是the only one of +可数名词复数，在定语从句中作主语时，定语从句中的谓语用单数形式（因为此时的先行词是the only one,而不是of 后的可数名词复数）．
He is the only one of the boys that likes playing the piano.
This is the only one of the books that is borrowed.
②先行词是one of +可数名词复数，在定语从句中作主语时，定语从句中的谓语用复数形式（因为此时的先行词是of 后的可数名词复数,而不是one）．
This is one of the students who are late.
5.当主句缺先行词时，用the one 代替，但须注意：the one只能代替可数名词单数．如为不可数名词时，指什么用什么．
Is this school the one I visited yesterday? Is pop music the music he likes best?
6. 当先行词是the way,　在定语从句中充当方式状语时（the way表”以…方式／方法”），引导词通常用that或省略，也可用in which．
I don’t like the way (that) you speak. =I don’t like the way in which you speak. =I don’t like the way (which/that) you speak in.
【“介词+关系代词”十种情况】
在定语从句中，介词+关系代词结构是一种较为复杂的问题。现就几种常见的介词+关系代词的结构浅析如下：
1．介词+which在定语从句中分别作时间、地点和原因状语，代替相应的关系副词when, where和why。如：
I still remember the day on which (when) I first came to school.我仍然记得初来学校的那一天。
The factory in which (=where) I work is a large one.我工作的工厂是一个大工厂。
This is the reason for which (=why) he was late.这就是他为什么迟到的原因。
2．介词+which（指物）/ whom（指人）在定语从句中作地点状语，表示存在关系，定语从句主谓一般要倒置。
They arrived at a farmhouse, in front of which sat a small boy.他来到一处农舍，前边坐着一个小男孩。
I saw a man, on the head of whom stood a bird.我看见一个人，他的头上站着一只鸟。
3．介词+ which（指物）/ whom（指人）在定语从句中作目的、方式或地点状语。这种结构中的介词一般受动词或介词后的名词所制约。如：
Could you tell me for whom you’ve bought this coat?你能告诉我这件衣服是给谁买的吗？ The man, from whom I learned the news, is an engineer.这人是一位工程师，我是从他那里得到这消息的。
4．介词+which/whom，用于被动结构的定语从句中，作状语，说明动作的出发者。如：
The wolf by which the sheep was killed was shot.伤害羊的那只狼被打死了。
The man by whom the wolf was shot was a good hunter.打死狼的那人是个好猎手。
5．不定代词+of+which/whom，在定语从句中作主语，说明整体中的部分，常用的不定代词有：both, all, any, some, each, none, most等。如：
There are a lot of books here, none of which belongs to me.这儿有许多书，可一本也不属于我。
Yesterday Mary bought a few clothes, all of which were expensive.昨天玛丽买了一些衣服，他们都很贵。
6．数词+of+which/whom，在定语从句中作主语，说明整体与部分的关系。数词可以是基数词、序数词、分数或百分数。如：
In our class there are fifty-four students, twenty-five of whom are girls.我们班有54名学生，25人是女生。
Two watches were stolen, one of which was mine.两只手表被偷了，其中一只是我的。
7．名词+of+which代替whose+名词，在定语从句中作定语。如：
I saw some trees, the leaves of which (=whose leaves) were black with disease.我看见一些树，他们的叶子因害病而发黑。
I live in a house, the windows of which are all broken.我住在一所房子里，其窗都破了。 8．介词+ which（指物）/ whose（指人）修饰后边的名词。如：
It rained all night and all day, during which time the ship was broken into pieces.雨下了一天一夜，就在这期间轮船撞碎了。
The driver was the man from whose room she had stolen the maps.司机就是那个人，她从他的房间偷走地图。
9．形容词最高级+of+which/whom结构，在定语从句中，作定语，表部分关系。如：
China has thousands of islands, the largest of which is Taiwan.中国有成千上万个岛屿，其中最大的是台湾岛。
In our class there are twenty girls, the cleverest of whom is Li Hua.我们班有20名女生，最聪明的是李华。
10．介词+which+不定式。此种用法多见于正式文体中，相当于一个定语从句。如：
At last he had something about which to write home.他终于有了给家里写信的内容了。
He had no key with which to open the door.他没有开门的钥匙。
He has a small room in which to live.

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