inonat时间上的用法:at表示时间的一点;in表示一个时期;on表示特殊日子。on表示在具体某一天及具体某一天的上午、下午和晚上。at后常接几点几分,天明,中午,日出,日落,开始等。in后常接年,月,日期,上午,下午,晚上,白天,季节,世纪等。
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例句:Canyoufinishtheworkintwodays?你能在两天内完成这个工作吗?Wegetupateighto’clock。我们8点起床。onMondaymorning在星期一上午。XiaoMingwasborninDecemberof2004。小明生于2004年12月。
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其它用法:in后面所接的都是较长时间。on后面所接的时间多与日期有关。at后面所接的时间最短。例句:inaweek;inMay;nthemorning/afternoon/evening。
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onMay4th,1919;onMonday;onTeachers’Day;onmybirthday;onthatday等。atsixo’clock;athalfpastnine;ataquartertosix;atthistime等。