精品文档---下载后可任意编辑(adverbial clause of time) 概念:在复合句 中,由时间连接词 引导的状语从句叫做时间状语从句 。(在复合句中,要注意主句和从句的时态大多都要保持一致。) 1.由 when, while, as,after,before,since,untill,引导的时间状语从句。例如: When you think you know nothing, then you begin to know something.当你以为自己一无所知的时候,你就是在开始知道一些事物了。 When truth is buried under the ground it grows, it chokes, it gathers such an explosive force that on the day it bursts out , it blows up everything with it.当真理被埋在地下的时候,它在生长,它感到压抑,它蓄存着这么一种爆炸性力量,一旦冒出,它就会炸破一切! Strike while the iron is hot. 趁热打铁。 You can feel the air moving as your hand pushes through it. 当你的手在空气中挥动的时候,你就能感觉到空气在流动。 Our headmaster laughed as she spoke.我们的校长边谈边笑。 主要时态:主过从过;主将从现 ;主句为一般现在时,从句不受影响。 编辑本段 when, while 和 as 的区别 when 引导的从句的谓语动词可以是延续性的动词,又可以是瞬时动词。并且 when有时表示“就在那时”。例如: When she came in, I stopped eating.她进来时,我停止吃饭。(瞬时动词) When I lived in the countryside, I used to carry some water for him.当我住在农村时,我常常为他担水。(延续性的动词) We were about to leave when he came in.我们就要离开,就在那时他进来了。 While 引导的从句的谓语动作必须是延续性的,并强调主句和从句的动作同时发生(或者相对应)。并且 while 有时还可以表示对比。例如: While my wife was reading the newspaper, I was watching TV. (was reading 是延续性的动词,was reading 和 was watching 同时发生) I like playing football while you like playing basketball.我喜爱踢足球,而你喜爱打篮球。(对比) As 表示“一边……一边”,as 引导的动作是延续性的动作,一般用于主句和从句动作同时发生;as 也可以强调“一先一后。例如: We always sing as we walk.我们总是边走边唱。(as 表示“一边……一...