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时间介词in/on/at,口诀,年月季要用in,周几几号要用on。午夜黄昏用at,也可用在时分前。,年月季要用in in 1992, in January;in summer;in spring;in autumn;in winter上午下午又是in in the morning;in the afternoon;in the evening,1、用in的时间短语有:,2、用on的时间短语有:,周几几号要用on(具体的某一天)on Monday;on Friday, on that day, on June 1st;on 23rd March;on Wednesday evening;on Sunday afternoon,3、用at的时间短语有:,午夜黄昏用at at noon; at night;也可用在时分前at ten oclock; at half past eight; at lunch time;at tea time,