中考复习知识点之时间状语从句
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时间状语从句
(1) 时间状语从句常用when,as,while,before,after,since,till,until,as soon as等连词来引导 。
例如:
It was raining hard (rain hard下大雨)when I got to school yesterday.
While he was doing his homework,the telephone rang.
As she walked along(沿着走)the lake,he sang happily.
He had learned a little Chinese before he came to China.
After he finished middle school,he went to work in a factory.
(2)在时间状语从句里,通常不用将来时态,用现在时态表示将来的动作或状态 。例如:
I'll ring you up as soon as I get to NewYork.
I will tell him everything when he comes back.
He won't believe it until he sees it with his own eyes.
(3) 在带有till或until引导的时间状语从句的主从复合句里,如果主句用肯定式,其含义是“一直到......时,谓语动词只能用延续性动词 。如果主句用否定式,其含义是“直到......才.......”“在......以前不......”,谓语动词可用瞬间动词 。例如:
The young man read till the light went out (熄灭) .
Let's wait until the rain stops.
We won't start until Bob comes.
Don 't get off(从下来) until the bus stops.
【till是指直到某一特定事件发生的时候,而在那个时刻之后,该事情或状况仍将持续 。Until是指直到某一特定事件发生的时候,而讲话的人在自己心里认为,在那个时刻之后,该事情或该状况将中止(不怎么可能持续) 。固定组合里 from moming till night中, till/until是不能替换的.】
【中考复习知识点之时间状语从句】
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