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概念：表示在过去某一时刻或某一段时间内正在进行的动作结构：was/were+doinge.g.Iwasdoingmyhomeworkwhenmymothercamein.PastProgressiveTense过去进行时过去进行时用法：1.过去进行时可表示在过去的某一时刻或某一段时间内正在发生的动作Iwastakingashowerat7o’clockyesterdayevening.Hewasreadingbooksatthattime.Theywerehavingthepianolessonfrom3to5lastSunday.2.过去进行时可表示一个动作发生时，另一动作正在发生Hewashavingdinnerwhenhisfathercamein.HerbrotherwaswatchingTVwhenthephonerang.Shewaswaitingforthebuswhenitbegantorain.3.过去进行时可表示两个动作同时发生Myfatherwasreadingthenewspaperwhilemymotherwascookingdinner.TheywereplayingbasketballwhileLindawastakingawalk.WhileLindawassleeping,JennywashelpingMarywithherhomework.4.过去进行时可表示过去将来时，当谓语动词为go,come,leave,start,begin等转移动词时，过去进行时可表示过去将要发生的动作Hisfatherwasleavingwhenheknockedatthedoor.Therainstormwascomingwhenhegothome.Themoviewasstartingwhenthelightswereturneddown.1.What(you,do)from3to6yesterdayafternoon?2.Mymother(dohousework)whilemyfather(watch)TV.3.Lindasawacutecatwhenshe(listen)themusic.4.WhenIgothome,myson(playgames).5.Iaskedhimwhenhe(come).6.He(do)thedishesatthistimeyesterday.wereyoudoingwasdoinghouseworkwaswatchingTVwaslisteningtowasplayinggameswascomingwasdoing