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1、Unit5Whatwereyoudoingwhentherainstormcame?SectionA3Grammarfocus-4cIwastalkingwithmymotherinmyhouse.Whatwereyoudoingwhentherainstormcame?Iwasonthestreet.Wherewereyouwhentherainstormcame?Iwaswaitingforthebusatthebusstop.Whatwereyoudoingwhentherainstormcame?过去进行时1.概念
2、: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,atthistimeatthattime,atthatmoment等e.g.Whatwereyoudoingat10yesterdaymorning?Iwaswritingalettertomyfatheratthatmoment.b:表示过去某段时间内正进行的动作。e.g.Wewerebuildingahouselastwinter.
3、Theywerewaitingforyouyesterday.否定句和疑问句：e.g.Wewerenotsleepingathome.Washefeelingwell?学习目标：1复习过去进行时,学会谈论过去的事情.2.了解when和while的用法及区别。3.能够在困境中互相帮助。Iwasreading.Whatwereyoudoingwhentherainstormcame?WhenI…Hewasdoing…WhenIcalledhimup,hewassleeping.Makeupthesentences.Whenit
4、…Hewasdoing…Whenitwalkedonthestreethewaseating.WhileI…Hewasdoing…WhileIwalkedtoschool,hewaseating.WhileI…Hewasdoing…WhileIwassleeping,hewaseating.Whatwereyoudoingateightlastnight?Iwastakingashower.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherhomework.Gramm
5、arFocus读下列句子,你能总结出句子中包含的语法吗？Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,Jennywa
6、shelpingMarywithherhomework.合作与探究when和while都可表示“当……的时候”，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when和while1.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。①IwaswalkingtoschoolwhenIs
7、awacatinatree.②WhenSallyarrivedhome,hermotherwascleaningthehouse.主句的动作是持续性的，而从句动作是短暂性的，此时用______引导时间状语从句，主句用__________时态，从句用一般过去时态。过去进行when③WhileIwassleepinginthebedroom,someoneknockedatthedoor.④Davidfellwhilehewasridinghisbike.主句的动作是短暂性的，从句的动作是持续性的，此时用_______引导从句
8、，主句用__________时态，从句用过去进行时态。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,主句和while引导的从句都用过去进行时.e.g.Iwas
