英语语法专项 之 状语从句 1. 时间状语从句 2. 条件状语从句 3. 原因状语从句 4. 结果状语从句 5. 比较状语从句 6. 目的状语从句 7. 让步状语从句 8. 地点状语从句 用来修饰主句中的动词，副词和形容词的从句叫状语从句。根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句， 原因状语从句，结果状语从句，比较状语从句，目的状语从句，让步状语从句。 各类状语从句连接词（短语）一览表： 时间 when, while, as, as soon as, since, until, after, before，as long as（长达……之久） 条件 If, unless,as/so long as(只要) 原因 As, because, since，as/so long as(既然,因为) 地点 Where 目的 So that(为了), in order that 结果 So that（方便）, so…that, such…that 让步 though, although, even if, however 方式 As 比较 than, (not)as…as 1. 时间状语从句 时间状语从句 常见的从属连词有：(注意其汉语意义) when, while, as, before, after, since, until (till) once as soon as, the moment, the minute, immediately, directly, each/every time, the first time, the last time, next time, by the time, whenever 等。例如： Every/Each time I was in trouble, he would come to my help. I thought her nice and honest the first time I met her. 注意：（1）when, while, as 的区别： 1)when 引导从句时，主从句的动作有先有后，也可以同时进行,从句的动作可以是持续性的，也可以是短暂的。如： When I got to the airport, the plane had already taken off. （主先从后）（短暂性） When I lived there, I used to go to the seaside on Sundays. (同时) （持续性） When the movie ended, the people went back. （从先主后） 2)while 侧重主从句动作的对比，且从句的动词必须是持续性的。如： While we were chatting she was looking at the time table on the wall． 3)as 引导从句时侧重主从句动作同时或几乎同时进行，从句的动作可以是持续性的，也可以是短暂的。如： Sometimes I watch TV as I am having breakfast． 4）when 和while 还可以是并列连词，意思分别是“就在这时”，...
