as和which的用法区别.docx

非限制性定语从句中的as和which
0s和which的相同点
as和which都可引导非限制性定语从句，放在主句之后；在非限制性定语从句中充当
从句的主语、宾语或表语。如：
Tom has found a good job, as非限制性定语从句中的as和which
0s和which的相同点
as和which都可引导非限制性定语从句，放在主句之后；在非限制性定语从句中充当
从句的主语、宾语或表语。如：
Tom has found a good job, as / which we all hope. 汤姆找到了一件好工作，这正是我们大 家所希望的。
as和which都可代表整个句子的内容或主句中的某一成分。如：
His mother is ill, which makes him very ，这件事情使他很难过。
He has made great progress, as / which makes us very , 这使得我们很
快乐。
以上两句中的as / which都指前面整个句子的内容。
Though he has lots of money, he still rides his old bike, which was bought ten years ago.
尽管他很有钱，但是他还骑着他的旧单车，这单车是十年前买的。
There you can meet many writers as you have ever read in ，你可见至U你在
书中所读过的很多作家。
■ as与which的区别
(1)领先行词前面有 so + adj. + a / such + (a) + adj. , the same等词修饰时，引导词只能
用as ,而不用 which 。如：
She is so nice a girl as we all 。
It is such an interesting book as we all want to 。
上面两句中的as就不能用which替换。
(2) as在从句中常作宾语；作主语时，从句的谓语动词常为系动词，即：系表结构或被动 结构。如：
As is said above, he has conquered the difficulty. 正如上面所说，他征服了困难。
⑶当非限制性定语从句放到主句的前面时，引导词只能用 as,而不用which 。如:
As is planned, we got there before eight. 正如方案，我们再把店前到达了那儿。
(4) As引导的非限制性定语从句指表示积极的意义，与主句是顺理成章的关系，绝不能与
之矛盾。假设非限制性定语从句表示一种消极的意义，那么只用which 。如：
He has succeeded in his career, as / which we all hope. 大家所希望的。
Her grandma died last week, which made her very sad. 伤。
(5)当非限制性定语从句的引导词前