第 9 讲 状语从句(要点透析)状语从句 状语从句是一个句子充当另一个句子的状语,表示主句动作发生的时间、条件、原因、方式、结果、目的等等
状语从句是历年高考题的重点、难点
命题一般是考查学生连词的掌握情况,根据两个句子的意思,判断两个句子之间的逻辑关系,选择合适的连词
常见的状语从句有九大类
一、时间状语从句1.when, as 与 while 表示时间when 既可表示“一段时间”(与持续性动词连用),又可表示“时间点”(与瞬间动词连用);when 可作并列连词,意为“这(那)时”
while 只表示“一段时间”,只与持续性动词连用 ,while 可表示对比转折,有“然而”之意
as 用法同 when 相似,但侧重主句和从句动作发生的同时性,可译作“随着”,“一边……一边……”
I fell asleep when/as/while he was doing his exercises
When/As he arrived in Shanghai, she met him at the station
I was about to go out when it began to rain
I like tea while she likes coffee
As spring warms the earth, all flowers begin to bloom
before 引导的从句中谓语动词不可用否定式,意为“在……之前;还没来得及;……(之后)才……”I had felt hungry before I arrived home
我还没到家就觉得饿了
(在到家之前觉得饿)She left the office before I could say sorry to her
我还没来得及向她道歉,她就离开了办公室
(在我能够说抱歉之前,她就离开了办公室)It