3 、非限定性定語從句只能用which 不用that
非限制性定語從句中只能用which,可以指代前面的一個詞,也可以引導(dǎo)從句修飾前面的整個主句,代替主句所表示的整體概念或部分概念。在這種從句中,which可以作主語,也可以作賓語或表語,多數(shù)情況下意思是與and this 相似。例如:
He succeeded in the competition, which made his parents very happy.
他比賽獲勝,令他父母十分欣慰。
4、 As在定語從句中的用法
1)引導(dǎo)限制性定語從句和非限制性定語從句
(1)as多與such 或the same連用,可以代替先行詞是人或物的名詞。
such… as; same…as
It wasn’t such a good dinner as she had promised us
(2)as 也可單獨(dú)使用,引導(dǎo)非限制性定語從句,作用相當(dāng)于which。例如:
The elephant’s nose is like a snake, as anybody can see.
2)As引導(dǎo)的非限制性定語從句的位置
as引導(dǎo)的非限制性定語從句位置較靈活,可以位于主句前面.中間或后面,一般用逗號與主句隔開,但which所引導(dǎo)的非限制性定語從句只能放在主句之后
As we all know, Taiwan is a part of China.
Water consists of hydrogen and oxygen, which (as ) is known to all.
5 、做介詞賓語時,如介詞位于關(guān)系代詞前一般用which 或whom, 如介詞位于句末,也可使用that,且可省略。
The earth on which we are now living came into being long, long ago.
The earth (which/that) we are now living on came into being long, long ago.
6 、誤區(qū)
That was the time that/which I still remember today.
That was the time when(at which) he came.
That is the factory that/which we are going to visit.
That is the factory where(in which) my brother works.
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