高考英语语法学案2013/7/26 1 专题四——状语从句英语中的状语从句用来修饰谓语或者整个主句按照功能可以分为：时间状从， 地点状从， 原因状从， 结果状从， 条件状从，目的状从，让步状从，方式状从，比较状从。1、时间状语从句（ 1）when、while 、 as 用法一览表。类别作用例句when (at or during the time that ) 既可以表示在某一点的时候，又可表示在某一段时间内，主句与从句的动作或事情可以同时发生也可以先后发生。It was raining when we arrived.( 指时间点 ) When we were at school, we went to the library every day.(在一段时间内 ) 注意： when 表“突然”while while 意思是 “当⋯⋯的时候” 或“在某一段时间里”。主句中的动作或事情在从句中的动作或事情的进展过程中发生，从句中的动词一般要用延续性动词。在when 表示a period of time 时，两者可以互换。Please don ’ t talk so loud while others are working.He fell asleep while/when reading. Strike while the iron is hot. (用 as 或 when 不可，这里的 while 意思是“趁⋯⋯” ) as as 表“当⋯⋯的时候”和when/ while 通用，但它着重强调主句与从句的动作或事情同时或几乎同时发生。还表示“一边一边”“随着”She came up as I was cooking.(同时 ) The runners started as the gun went off.(几乎同时 ) （ 2）引导时间状语从句的连接词除上述外还有：① as soon as ，directly, immediately, the moment, the minute ⋯ 一⋯⋯就As soon as I have finished it , I’ ll give yu a call.He made for the door directly he heard the knock. ② hardly / scarcely ⋯ when, no sooner ⋯ than,表示“一⋯⋯就”We had hardly got / Hardly had we got into the country when it began to rain. No sooner had he arrived / He had no sooner arrived than she started complaining. ③ till, not ⋯ until ⋯, until, before, sincebefore 用法not until 强调，倒桩since 用法Don’ t get off the bus until it has stopped. Not until years later could I realize the value of that kind of giving. He waited for his f...
