高中英语语法专题系列：状语从句课件（共78张）

状语从句定义 在复合句中担任状语成分的从句称为状语从句，修饰主句的谓语动词，形容词或副词等。 状语从句分类 1. 时间状语从句 2. 地点状语从句 3. 原因状语从句 4. 条件状语从句 5. 让步状语从句 6. 目的状语从句 7. 结果状语从句 8. 方式状语从句 9. 比较状语从句 1. 时间状语从句 常用连词： when, while, as, before, after, since, until (till) , once , as soon as, the moment, immediately, each/every time, the first time, the last time, by the time, whenever等引导。 1）when 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。 When I got to the airport, the plane had already taken off. （前后） When I lived there, I used to go to the seaside on Sundays. （持续） When the movie ended, the people went back. （短暂） 【注意】 当when引导的时间状语从句的主语与主句主语相同时， 往往还可以用“when＋分词”的形式替代该状语从句。 When I came into the room, I found him lying there asleep. = When coming into the room, I found him lying there asleep. = Coming into the room, I found him lying there asleep. 2）while while侧重主句的动作发生在从句的时间之间，且从句的动词必须是持续性的。 While we were chatting ,she was looking at the time table on the wall． While I slept, a thief broke in. while+持续性动词 3）as as表示 一边…一边…，强调