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
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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）
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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)。
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※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
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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. ②as引导的从句有“正如”、“正像”之意，而which则无此意。常用句型有：
as we all know, as is known to all, as everybody can see, as is expected, As is known/ said/ reported/ told/ we all know等。如：
As we all know, paper was first made in China. To shut your eyes to facts, as many of you do, is foolish.
③主句和从句有因果关系时，用which.
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新课标高一英语语法
