as用法总结.doc

高考常见词as用法总结
近几年高考中有关as一词的题目出现过很屡次，其中as或是最正确选项，或是干扰项，或是题干中的关键信息点，涉及as作为连词、介词、关系代词、副词和习语等各种用法。现结合高考试题将as的用法归纳如下：
　　一、 用B。
　　5. 固定句型：“主句，as +be/do+主语”表示“也一样”。例如：She’s unusually tall, as are both her parents./He’s a doctor, as was his wife before she had children.（精品文档请下载）
　　二、 用作介词的as
　　1. 表示“如，像”。例如：They got united as one man./She spoke of me as her dearest friend.（精品文档请下载）
　　2. 表示“作为，当作”。例如：As a League member, you should think more of others./After graduating from the college, he firstly worked as a clerk in a big company.（精品文档请下载）
　　3. 和某些动词搭配，表示“把……当作……”，如：look on...as..., regard...as..., treat...as..., consider...as..., think of...as..., see...as...等。其中consider...as...中的as可以省略。as和famous或known搭配，表示“作为……而知名”。（精品文档请下载）
　　例5　Linda worked for the Minnesota Manufacturing and Mining Company, ________ as 3M.（精品文档请下载）
　　A. knowing B. known
　　C. being known D. to be known
　　解析： 假设熟悉be known as这一短语，运用有关非谓语动词的常识，就可选出正确答案B。
　　三、 用作关系代词的as
　　1. 引导限制性定语从句，先行词前通常有as, so, such, same等修饰语。例如：He will marry as pretty a girl as he can find./My hometown is no longer the same as it used to be./As many people as are present will be given a ，同学们要注意和结果状语从句的区别。比方：
① The teacher asked us such a difficult question that none of us could answer it.② The teacher asked us such a difficult question as none of us could answer.①句为结果状语从句，而②句那么是定语从句。（精品文档请下载）
　　2. 引导非限制性定语从句