过去进行时微课PPT

过去进行时的用法1创新微课过去进行时的用法1.意义：表示过去某一时间点或某段时间内正在进行的状态或动作。2.构成：was/were+doing…否定式was/werenot+doing…疑问式：Was/Were……doing…?创新微课过去进行时的用法3.标志词：atthis/thattimeyesterdayat9:00lastnightfromseventoninelastnight……was/weredoingwhen….did…..while...was/weredoing...,....did....…介词短语表示过去的时间点when和while引导的从句cookamealatthistimeyesterdayHecookatthistimeyesterday.Let’stalkwasingLet’stalkplayfootballatfouro’clocklastFridayHeplayfootballatfouro’clocklastFriday.wasingLet’stalkrideahorseatninelastSundayHeahorseatninelastSunday.wasingrideridat5o’clockyesterdayafternoondanceLet’stalkHewasdancingat5o’clockyesterdayafternoon.When&WhileTherabbitwasjumpingwhilethepigwasdancing.Theboywasplayingbasketballwhentheteachercamein.=Whiletheboywasplayingbasketball,theteachercamein.1创新微课过去进行时的用法句子结构注意事项when主语+was/weredoingsth.+when+主语+didsth.when=at/duringthattime,所以从句中的动词通常用短暂性动词,也可以用延续性动词。whileWhile+主语+was/weredoingsth.,主语+didsth.while=duringthattime,表示某一时间段内发生的动作，因此，从句谓语动词常用延续性动词。asAs+主语+was/weredoingsth.,主语+didsth.as引导时间从句时，相当于while，即后面要接延续动词，一般译成“正当……,”“随着……”。1创新微课过去进行时的用法1.如果表示一个动作或事件发生时,另一个动作或事件正在进行,可用when和while。过去进行时一般提供事情发生的背景”。MarywascuttingupsomebananaswhenIcamein.2.当从句中的谓语动词表示瞬间动作时,不可用while。Iwasdrawingthepicturewhenmyfriendcame.（这儿when不可用while）Hefnallyfellaleepwhen/whilethewindwasdyingdown.（这儿when相当于while）3.如果主要动作和背景动作都是延续的或同时发生的，那么主从句的动词都可以用过去进行时。Whilehewascleaninghiscar,Iwascooking.(两个动作同时进行）Whilehewaswaitingforthebus,hewasreadinganewspaper.（两个动作都是延续的）。1创新微课过去进行时的用法Correcttheirmistakes1创新微课过去进行时的用法注意主句、从句的时态搭配关系。注意主句、从句的谓语动词延续性和短暂性。注意：When,while,as引导时间状语从句1创新微课过去进行时的用法1.Mary______adresswhenshecutherfinger.A.makesB.ismakingC.wasmakingD.made2.As/whileshe___thenewspaper,Granny______asleep.A.read；wasfallingB.wasreading；fellC.wasreading；wasfallingD.read;fell3.MybrothertomusicwhileI___.A.waslistening,wasdancingB.listened,dancedC.waslistening,dancedD.listened,wasdancing考点链接同学，下节再见