1. asas 和一样中间必须用形容词或副词原级。例如：This classroom is as big as that one.这间教室和那间一样大。He runs as fast as Tom.他和汤姆跑的一样快。否定结构：not as/soas,“不如”。上面的两个句子可分别改为：This classroom is not as/so large as that one.这间教室不如那间大。He doesnt run as/so fast as Tom.他跑得不如汤姆快。2. as soon as 一就用来引导时间状语从句。若主句是一般将来时，从句要用一般现在时。例如：Ill tell him the plan as soon as I see him.我一看到他就告诉他这个计划。Hell go home as soon as he finishes his work.他一完成工作就回家。3. be busy/enjoy/hate/go on/finish doing sth. 忙于/喜
