状语从句 状语从句按其意义和作用可分为: 1.时间状语从句 2.地点状语从句 3.原因状语从句 4.目的状语从句 5.结果状语从句 6.条件状语从句 7.方式状语从句 8.比较状语从句 9.让步状语从句1、时间状语从句 引导时间状语从句的从属连词有：when, while, as, whenever, before, after, since, till, until, as soon as, once, hardlywhen, no soonerthan等引导。如： When he was still a young man, he was forced to leave his homeland for political reasons. It has been 15 years since he left. Ill tell him the news as soon as I see him. Once you have got used to it, you will like it. I waited till he had finished his work.注意：（1）
