定语从句关系代词as

下面是小编整理的定语从句关系代词as，欢迎阅读。

　　as引导限制性定语从句

例题：I had never heard such an interesting story ______ you told me yesterday.

A. thatB. whichC. asD. that/which

有些同学可能选择D，这说明有关定语从句的基本知识学得不错，但知识还是有漏洞。

　　要记住：

如果先行词被such, the same, so+形容词+a/an，as+形容词+a/an修饰时，这时关系词我们要用as。

此时，as同that, who, which, whom一样，是关系代词，代指the same, so, such和as引导的短语，常译作“正如，像”，在定语从句中通常作主语、宾语和表语。

A. 先行词被such修饰时，构成“such…as…”。

It’s such a heavy stone as nobody can move.

那是一块重得没人能移得动的石头。(as作宾语)

Don’t trust such men as praise you to your face.

不要相信那种当面吹捧你的人。(as作主语)

B. 先行词被the same修饰时，构成“the same…as…”。

We have arrived at the same conclusion as they have.

我们已得出和他们同样的.结论。(as作主语)

This is the same watch as was worn by John.

这与约翰戴的那块表一样。(as作主语)

C. 在 “as…as…” 句型中，第一个as后面跟名词时。

它可以看作是 “as+形容词+as” 的一种变化形式。

He is as good as his brother. 他和他弟弟一样好。

这句话还可以表达为：

He is as good a boy as his brother.

It’s as pleasant a film as I have ever seen. (as作宾语)

这是一部和我以往看的同样好的电影。

(参看P.42考点4)

D. 在“so+形+冠+n. + as”句型中 (He is so good a student as every teacher likes.)

它可以看作是先行词被such修饰时关系代词用as(第一种情况)的一种变化形式。

He is such a good student as every teacher likes.

他是一个每个老师都喜欢的这样一个好学生。

用so可以表达为：

He is so good a student as every teacher likes.