As引导定语从句

As引导的定语从句

As可以作为关系代词引导限制性或非限制性定语从句，作句子中的主语和宾语。 一、As引导限制性定语从句

通常会出现在这些结构当中，如 the same ……as, as…….as , such……as , so……as等。当主句中先行词前面出现the same, as , such, so等词的时候，定语从句由as引导 例：1.It ‘s the same thing as we need right now. (我们现在所需要的是同一种东西)

2. Jim is such a person as everybody likes(Jim就是大家都喜欢的那一种人)

二、As引导的非限制性定语从句

As引导非限制性定语从句时，指代的是整个主句的内容。从句位置灵活，可放在句

首，句中或句尾。

常见结构：主动语态 As sb know(s), …… As sb can see, …… 被动语态 As + is/has been+ 动词ed, …… 例：As we kown, TaiWan is belong to China

As he kowns, Mary will never go out with him

As is metioned above, Smoking is harmful to our health. As is well known, More than 1.4 billion people live in China. As is expected, we passed the exam.