1.When(at or during the time that )只表示一般的时间关系,它即可以指时间点(a point of time),也可以指一段时间(a period of time),用when时,从句的动作可与主句的动作同时发生,也可先于主句的动作发生,因此最常用。
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.1.when(at or during the time that)只表示一般的时间关系, 它既可指时间的一点 ( a point of time ),也可..
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但是when/as 还可以指“一点时间”(a point of time) , 同瞬时动词连用, 而while却不能。如下句中的when/as不能用while替代:
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An hour is a period of time while one o 'clock is a point of time.
一个小时是一段时间,而一点钟是一个时刻。
We meet like two travelers on their journeys, at a point of time, and together wait for the morning sunlight.
于是我们像偶遇的旅者,在某时某刻,一起等待曙光。
She made a point of spending as much time as possible away from Oklahoma.
她有意尽可能长时间地呆在俄克拉何马以外的地方。
So each hour's time difference between the ship and the starting point marks a ship's progress of fifteen degrees of longitude to the east or west.
VOA: special.2010.07.14
It is very interesting to me because it's a discrete invention that happened in a point of time in response to information technology.
我觉得很有意思,因为它由许多组成部分构成,这些部分组合在了一起,而且都和信息技术有关。
MIT has undertaken a variety of experiments in Educational technology. But we really feel at this Point of time we need some sort of coordinate strategy.
麻省理工做了许多不同的,教育技术的实验,但我们觉得,现在我们需要一些协调的战略。
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