比较状语从句(adverbial clause of comparison)从某种角度上说，它也是一种方式状语从句，它通常可和以下关联词来引导as(或so)...as, than, according as, in proportion as等。如：
as...as...
He woke up as suddenly as he had fallen asleep. 他醒来得和入睡一样突然。(第一个as是副词)
I have never seen so much rain as fell that February. 我从未见过像那个二月那么多雨。(否定结构常用so…as, 也可用as... as)
than
Man developed earlier than people think. 人类的出现比人们所想的要早。
He moves more slowly than his sister does. 他行动起来比他妹妹慢。
The youth of today are better off than we used to be. 今天的年轻人比我们过去的境况要好。
according as
You may go or stay, according as you decide. 是去是留由你自己决定。
You will be praised or blamed according as your work is good or bad. 你受表扬还是责备得看你的工作好坏决定。
in proportion as
Men are happy in proportion as they are virtuous. 人之幸福与德行成正比。
Some people are happy in proportion as they are noticed. 有些人越受到注意就越高兴。
