文档介绍：when引导的时间的状语从句
when引导的时间的状语从句
when引导的时间的状语从句
说到 when 引导的时间状语从句 ,不得不提起 as 和 while
一、 when 可以和延续性动词连用 , 也可以和短暂性动词连用 ; 而 while 和 as 只能和延续性 动词连用。
Why do you want a new job when youve got such a good one already?(get为短暂性 动词你已经找到如此好的工作 ,为何还想再找新的 ?
Sorry , I was out when you called me. (call为短暂性动词对不起 ,你打电话时我刚好 外出了。
Strike while the iron is hot. (is 为延续性动词 ,表示一种持续的状态趁热打铁。
The students took notes as they listened. (listen为延续性动词学生们边听课边做笔 记。
二、 when 从句的谓语动词可以在主句谓语动作之前、之后或同时发生 ; while 和 as从句的 谓语动作必须是和主句谓语动作同时发生。
,只用 when 。
When he had finished his homework, he took a short rest. (finished先发生当他完成 作业后 ,他休息了一会儿。
When I got to the airport, the guests had left. (got to后发生当我赶到飞机场时 ,
客 人们已经离开了。
,且从句动作为延续性动词时 , when , while , as 都可使 用。
When /While /As we were dancing, a stranger came in. (dance为延续性动词当我们跳舞时 ,一位陌生人走了进来。
When /While /As she was making a phonecall, I was writing a letter. (make为延续性动词当她在打电话时 ,我正在写信。
、从句动作同时进行 ,从句动作的时间概念淡化 ,而主要表示主句动作
发生的背 景或条件时 ,只能用 as 。这时 , as 常表示 “随着 ” ; 一“边 ,一
边 ”之意。 ① As the time went on, the weather got worse. (as表示 “随着 ”
之意
The atmosphere gets thinner and thinner as the height ,
大 气越来越稀薄。
As years go by, China is getting stronger and ,中
国变 得越来越