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1、Iwastalkingwithmymotherinmyhouse.Whatwereyoudoingwhentherainstormcame?Iwasonthestreet.Wherewereyouwhentherainstormcame?Iwaswaitingforthebusatthebusstop.Whatwereyoudoingwhentherainstormcame?过去进行时1.概念:表示过去某一时刻或某段时间内正进行的动作。2.构成:was/were+动词现在分词3.用法:a:表示某一时刻正进行的行为,与特定的过去时间状语连用,常见的时间有:at8lastnight,atthist
2、imeatthattime,atthatmoment等e.g.Whatwereyoudoingat10yesterdaymorning?Iwaswritingalettertomyfatheratthatmoment.b:表示过去某段时间内正进行的动作。表示过去某段时间内正进行的动作。e.g.Wewerebuildingahouselastwinter.Theywerewaitingforyouyesterday.否定句和疑问句：否定句和疑问句：e.g.Wewerenotsleepingathome.Washefeelingwell?Iwasreading.What were you doin
3、g when the rainstorm came?WhenIHewasdoingWhenIcalledhimup,hewassleeping.Make up the sentences.WhileIHewasdoingWhileIwalkedtoschool,hewaseating.While I He was doingWhile I was sleeping,he was eating.Whatwereyoudoingateightlastnight?Iwastakingashower.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingh
4、erhomework.读读下列句子下列句子,你能你能总结总结出句子中包含的出句子中包含的语语法法吗吗？Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMaryw
5、ithherhomework.when和和while都可表示都可表示“当当的时的时候候”，引导时间状语从句。你知道两者在，引导时间状语从句。你知道两者在过去进行时中的用法有什么不同吗？过去进行时中的用法有什么不同吗？1.以when和while引导的时间状语从句1)延续性动词和非延续性动词延续性动词指动作可以延续一段时间,而不是瞬间结束。如:work、study、drink、eat等。非延续性动词指动作极为短暂，瞬间结束。如:start、begin、hit、jump、knock等。IwaswalkingtoschoolwhenIsawacatinatree.WhenSallyarrivedhom
6、e,hermotherwascleaningthehouse.主句的动作是持续性的，而从句动作是短暂主句的动作是持续性的，而从句动作是短暂性的，此时用性的，此时用_引导时间状语从句，主引导时间状语从句，主句用句用_时态，从句用一般过去时态。时态，从句用一般过去时态。过去进行过去进行whenWhileIwassleepinginthebedroom,someoneknockedatthedoor.Davidfellwhilehewasridinghisbike.主句的动作是短暂性的，从句的动作主句的动作是短暂性的，从句的动作是持续性的，此时用是持续性的，此时用_引导从引导从句，主句用句，主句用_
7、时态，从句用时态，从句用过去进行时态。过去进行时态。一般过去一般过去while总结1)when可指时间点,又可指时间段,从句中可用延续性动词,也可用非延续性动词。2)while总是指一个时间段,从句中必须用延续性动词。2)当两个动作同时持续发生的时候当两个动作同时持续发生的时候,主句和主句和while引导的从句都用过去进引导的从句都用过去进行时行时.e.g.IwaswatchingTVwhilemysisterwaslisteningtothemusic.2)在本单元中,出现了以when和while引导的时间状语从句。when表示“当的时候”。从句中既可用延续性动词,又可用非延续性动词,这些动
8、词既可以表示动作,又可表示状态。从句中的动作既可和主句的动作同时发生,又可在主句的动作之前或之后发生。如：MarywashavingdinnerwhenIsawher.Theboywasstillsleepingwhenhismothergothomeyesterdaymorning.Look at the table and write sentences with both while and when.JohnMarytakephotosbuyadrinkplaythepianoleavethehousecleanhisroomturnontheradioshoptakethecarto
9、thecarwash4a1.WhileJohnwastakingphotos,Maryboughtadrink.JohnwastakingphotoswhenMaryboughtadrink.2.WhileJohnwasplayingthepiano,Maryleftthehouse.JohnwasplayingthepianowhenMaryleftthehouse.3.WhileJohnwascleaninghisroom,Maryturnedontheradio.JohnwascleaninghisroomwhenMaryturnedontheradio.4.WhileJohnwassh
10、opping,Marytookthecartothecarwash.JohnwasshoppingwhenMarytookthecartothecarwash.Fill in the blanks with was,were,when or while.At7:00a.m.,Iwokeup._I_makingmybreakfast,mybrother_listeningtotheradio._Iwaseating,theradionewstalkedaboutacaraccidentnearourhome.MybrotherandIwentoutrightawaytohavealook._we
11、gottotheplaceoftheaccident,thecar_inbadshapefromhittingatree.Butluckilythedriver_fine.Theroads_icybecauseoftheheavysnowfromthenightbefore.WhilewaswasWhileWhenwaswaswere4bWhat were you doing at these times last Sunday?Fill in the chart.Then ask your partner.YouYourpartner9:00a.m.11:30a.m.4:00p.m.9:00p.m.4cA:WhatwereyoudoingatnineoclocklastSundaymorning?B:Iwassleeping.Howaboutyou?A:Iwasdoingmyhomework.B:Yourekidding!