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过去进行时ThePastContinueTense过去进行时的定义1过去进行时的结构23过去进行时的标志词4现在分词的变化规则5when和while用法辨析一般现在时和过去进行时辨析6过去进行时的定义1过去进行时表示过去某一时刻或某一段时间内正在进行或发生的动作。通常句子一定会有一个“表示过去某个时间点”的状语。如：Shewasreadingabookat10a.m.yesterdaymorning.Hewasshoppingfrom8to9lastnight.过去进行时的结构2S(主语)+was/were+v.-ing+其它。否定形式问句形式was/were+not+doingWas/Were+主+doing?was/were+doingHewassleepingatthattime.Hewasn’tsleepingatthattime.Washesleepingatthattime?肯定形式•1.Iwassingingsongsyesterdaymorning.•否定句：___________________________•一般疑问句：__________________________•2.Theyweredrawingpictureswhentheteachercamein.•否定句：___________________________•一般疑问句：__________________________•3.Shewaswashingthewindowwhenthetelephonerang.•否定句：___________________________•一般疑问句：__________________________ExerciseOne过去进行时的标志词3then,atthattime,thistimeyesterday,at5o’clocklastnight,allnight,allthemorning,from7:00to9:00yesterday;when或while引导的时间状语从句…现在分词的变化规则4口诀规则例子直1.一般情况下，直接在动词后加-ing；play–playing去2.动词以不发音的-e结尾，要去-e加-ing；take–taking双3.重读闭音节结尾末尾只有一个辅音字母的动词，要双写词尾的辅音字母，再加-ing；cut–cutting变4.以-ie结尾的动词，把ie变成y再加-ing。lie–lyingwhen和while用法辨析5（1）.when的用法：状语从句表示短时间的动作，主句常用进行时态。Awas/weredoingsth.whenBdidsth长时动作短时动作Lileiwasdrawingwhentheteachercamein.WhenIcamein,hewasreadingthenewspaper.（2）.while的用法从句用过去进行时，主句用一般过去时；主句和从句都用过去进行时。Adidsth.whileBwas/weredoingsth.Awas/weredoingsth.whileBwas/weredoingsth.WhileIwaswatchingTV,Tomcamein.WhileIwaswatchingTV,shewasdoingsomecleaning.一般现在时和过去进行时辨析6(1).用法不同过去进行时一般过去时1.表示动作在持续或未完成。1.表示某一动作已经完成。2.表示动作反复地进行。2.表示只做一次动作。Shewaswritingalettertoherfriendateightlastnight.Shewrotealettertoherfriendlastnight.(信不一定写完)(信写完了)Shewavedtome.Shewaswavingtome.（挥了挥手）（反复挥手）(1).用法不同(2).标志词不同过去进行时一般过去时过去时间点：atthattime,thistimeyesterday,at7o’clockyesterdayevening等。过去时间点：justnow,yesterday,thismorning,threeyearsago等。过去时间段：fromsixtonineyesterday,frommorningtillnight,allthosedays等。过去时间段：inthepast,in+过去的年份,lastweek,onceuponatime等。Wewerehavingsupperatthistimeyesterday.Itwasrainingallthosedays.IwasreadingEnglishwhilemymotherwascookingbreakfast.（过去进行时）IlivedinBeijingthreeyearsago.ThefirstOlympicGameshappenedin1896.Annyusedtobeshort,butshebecomestallernow.（一般过去时）【典例1】LittleTom______computergameswhenhismothergothome.A.isplayingB.playsC.wasplayingD.playing考查时态。句意：当妈妈到家的时候，小汤姆正在玩电脑游戏。when引导时间状语从句，主句多用进行时，时间发生在过去，故用过去进行时。【典例2】Turnoffthewaterwhileyou______yourteethorwashingyourhands.A.werebrushingB.brushC.arebrushingD.brushed考查时态。句意：当你刷牙或洗手的时候，请关掉水龙头。while引导时间状语从句，时态保持一致，brushing与washing并列；习惯的动作，故选现在进行时。【典例3】—Icalledyouat8:00yesterdayevening,butnooneanswered.—Sorry,I______clothesatthattime.A.washB.washedD.amwashingD.waswashing考查时态。句意：—昨晚八点我打电话给你，但是没有人接。—不好意思，那个时候我正在洗衣服。atthattime为过去进行时标志词，选用was/weredoing。1.She__________(do)herhomeworkthistimeyesterday.2.Theteacher_________(help)hisstudentswiththeirlessonsnow.3.He__________(make)progresseveryday.4.She_____________(read)astory-bookatsevenyesterdayevening.5.It____________(rain)hardnow.6.Thestudents_________(get)readyforthepicnicthesedays.wasdoingishelpingmakeswasreadingisrainingaregettingExerciseTwo7.They_________(visit)thesciencemuseumnextMonday.8.Look,they__________(play)videogames.9.We__________(do)somecleaningatthattime.10.______thestudents_____(like)learningEnglish?11._____you______(have)agoodtimelastSunday?willvisitareplayingweredoingDolikeDidhave12.____he________(study)Englishfrom7to9lastnight?13.Listen,she________(sing).14.He________________(notwork)inthefactorythesedays.15.It’seighto’clock.Thestudents_____________(have)anEnglishlesson.Wasstudyingissingingisn’tworkingarehavingTHANKYOU