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介词onatin+时间的用法at时间最短，一般表示点时间，具体的某个时刻1.atsixo’clock2.at8:30习惯用语：atnightatnoonOn‘在具体某一天’包括‘具体某一天的上午下午和晚上’1.OnMother’sDay,Igivecarnationstomymother.2.OnMonday/Friday/Saturday……3.OnTuesdayafternoonOnSundaymorning(evening)4.OnJuly1,1999OnMarch71On+星期(1----7)2On+年，月，日/年，日/月，日In时间范围大（一段时间）1.inspring/summer/autumn/winter2.inMay3.inthemorning/afternoon/evening4.inSeptember/May/June/July5.inayearinaweek1in+四季2in+月份3in+年/年，月/月At几点钟；In一段时间；On某一天1.Igotoschool_____seveno’clock.2.Iusuallyplaybadminton______Sundayafternoon.3.Thebuilding’sshadowislong______theafternoon.4.Thesunishighinthesky_____noon.5.Wehavelunch_____11:35atschooleveryday.6.______Monday,Ihavesixclasses.7.Mybirthdayis_____thefirstofMay.8.______autumn,wecaneatmuchfruit.9.Summercomes______June,JulyandAugust.10.______Children’sDay,weplaygamesintheclassroom.atinonOnatonatIninOn