精选优质文档-倾情为你奉上状语从句详细讲解一、定义:在复合句中充当状语的句子成为状语从句。二、分类:(9种)时间,原因,地点,结果,目的,方式,让步,条件,比较状语从句。1. 时间状语从句连词主要有:when as while before after until as soon as since等(1)区别when, as, while的用法 .when引导的时间状语从句,其动词既可以是延续性动作的动词,也可以是瞬间性动作的动词,如: _ the students heard the teachers footsteps, they all stopped talking. 当学生们听到老师的脚步声时,他们都停止了讲话。(从句动作发生在前) as引导的时间状语从句其动词的动作是延续性的,而且侧重表示主句和从句的动作并相发生: We were having breakfast _ she was combing her hair. 她梳头时我们在吃早饭。 whi