定语从句as的用法总结

定语从句as的用法总结

定语从句as的用法总结

(1)as引导的定语从句修饰表人或物的先行词，即先行词可以是人也可以是物；在定语从句中可以做主语、宾语或表语；常用于the sameassuchasas(so)as句型，as不论在定语从句中作何成分，均不能省略。

①先行词为人such teachers，as作主语

②I’ll buy the same bike as I lost yesterday.先行词为物the same bike，as作宾语,指同一类事物※此时注意和the same that 引导的定语从句的区别

It’that引导定语从句，作宾语，指同一个事物

※She wore the same dress that she wore at Mary's wedding.(the samethat特指同一个)她穿着她在Mary婚礼上穿过的同一条裙子。(the sameas 泛指同一类)她穿着和她妹妹所穿的一样的裙子。那块手表和我丢失的一模一样。(the sameas 泛指同一类)那就是我丢失的那块手表。(the samethat特指同一个)③The school is just the same one as it was 10 years ago.

先行词为物the same one (school),as作表语

It’先行词为物so heavy a box，as作宾语

此时应注意as引导的定语从句和结果状语从句such sothat的区分

It’结果状语从句sothat如此以至于※He is such a good student as is liked by everyone.(定语从句，as在从句中作主语)（结果状语从句suchthat）that在从句中不充当任何成分，故不是定语从句，而是结果状语从句

(2)as引导的非性定语从句可以修饰整个主句,可以放在主句前，主句后或插入主句中间。此时as含有“正如”之意。常用的as引导的非性定语从句固定表达有：

as we all know as everyone knows as is known to all as is well-known (众所周知)as I can remember(正如我所记得的)as we expect as was expected (正如预料的那样)as often happens as we all can see as can be seen as has been said before (如前所述)…

As everyone knows,Shakespeare is a famous writer.

Shakespeare is a famous writer,as everyone knows.

Shakespeare,as everyone knows ,is a famous writer.

(3)注意which引导的非性定语从句也可以修饰整个主句,但不能放在主句前，常译为“这一点、这件事”。

(4)注意当修饰整个主句时，as引导的非性定语从句含“正如”之意，因此在意义上不能和主句相抵触；which引导的非性定语从句则无此。如：我们的球队输了比赛，这一点是未预料到的。此时不能用as。我们的球队赢了比赛，正如预料的那样。