as用作副词

(同…)一样…；同样〔在此是指 as… as… 结构中的第一个 as, 它在主句中为指示副词，第二个 as (在子句中)和第一个 as 相关联，故转为连接词。 第二个 as 引导的子句，可省略一部或全部，包括 as 本身〕。 

It is as white as snow (is white). 它白得像雪一样。 

She is as wise as (she is) fair. 她的聪明比得上她的美貌。 

He is as clever ( as you). 他(跟你)一样聪明。 

I can do it as well ( as they). (跟他们一样)这件事我也能做。 

I have as many [much]. 我也有这许多。 

He did the work in two hours, but it took me as many days. 他两小时做完这件工作，可是我要两天功夫才做完。