at(时间介词)的用法

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at(时间介词)的用法
at(时间介词)的用法

at(时间介词)的用法
(1)表示“某一具体时刻(即几点几分时)”,须用介词at.例如:
He gets up at six o''''clock every day .他每天六点起床.
I got home at five thirty yesterday afternoon.我昨天下午五点半到家.
(2)用在特定的时候(时节、时机)时,须用介词at.例如:
They were happy at that time.他们那时很幸福.
I think the shop is clcsed at this time lf
day.我认为商店在白天的这个时候关门了.
(3)表示“在中午、在夜晚、在周末”时,须用介词at.例如:
What do you often do at noon?你中午经常做些什么?
You can see many stars in the sky at night.夜晚你能看到天空中有许多星星.
(4)表示“在……岁”时,须用介词at.例如:
At the age of nine ,the boy could swim
well.在九岁的时候,这孩子就游泳游得很好了.
At the age of twenty,I began to teach English at this
school.在二十岁的时候,我就开始在这所学校教英语了.