定語從句

I.定語從句起了形容詞的作用，在句中修飾一個名詞或代詞。被修飾的詞叫做先行詞，引導定語從句的詞叫關系詞，他的作用一是放在先行詞與定語從句中間起了連接作用，二是在從句中擔當一個成分，并與先行詞保持數(shù)的一致。

關系詞

先行詞

從句成分

例句

備注

關系代詞

who

人

主語

Do you know the man who is talking with your mother?

whom, which和that在從句中做賓語時，�？梢允÷�，但介詞提前時后面關系代詞不能省略，也不可以用that

whom

人

賓語

Mr. Smith is the person with whom I am working

The boy (whom) she loved died in the war..

whose

人，物

定語

I like those books whose topics are about history.

The boy whose father works abroad is my deskmate.

that

人，物

主語，賓語

A plane is a machine that can fly.

She is the pop star (that) I want to see very much.

which

物

主語，賓語

The book (which) I gave you was worth $10.

The picture which was about the accident was terrible.

as

人，物

主語，賓語

He is such a person as is respected by all of us.

This is the same pen as I lost yesterday.

as做賓語一般不省略

關系副詞

when

時間

時間狀語

I will never forget the day when we met there.

可用on which

where

地點

地點狀語

This is the house where I was born.

可用in which

why

原因

原因狀語

I can’t imagine the reason why he turned down my offer.

可用for which

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