初中英语in,on,at的时间用法规律如下:①固定短语:inthemorning/afternoon/evening在早晨/下午/傍晚,atnoon/night在中午/夜晚,onweekdays/weekends在工作日/周末,onschooldays/nights在上学日/上学的当天晚上,earlyinthemorning=intheearlymorning在大清早,lateatnight在深夜②不加介词this,that,last,next,every,one,yesterday,today,tomorrow,tonight,all,most等词之前一般不加介词
如,thismorning今天早晨(on)thatday在那天(thatday更常用些)lastweek上周nextyear明年thenextmonth第二个月(以过去为起点的第二个月,nextmonth以现在为起点的下个月)everyday每天onemorning一天早晨yesterdayafternoon昨天下午tomorrowmorning明天早晨allday/morning/night整天/整个早晨/整晚(等于thewholeday/morning/night)mostofthetime(在)大多数时间③一般规则除了前两点特殊用法之外,其他≤一天,用on,>一天用in,在具体时刻或在某时用at(不强调时间范围)关于ononmyninthbirthday在我九岁生日那天onTeachers’Day在教师节(注意:节日里有表人的词汇一般都用复数在加s’所有格,如onChildren’sDay,onWomen’sDay,有四个节日强调单数之意思,onMother’sDay,onFather’sDay,onAprilFool’sDay,onValentine’sDay)onSunday在周日,onSundaym