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1、人教版初中英语八年级下册Unit5Whatwereyoudoingwhentherainstormcame?SectionA（3a-3c）永年区第八中学宁献龙Iwasreading.Whatwereyoudoingwhentherainstormcame?Iwascooking.Iwasinthekitchen.Wherewereyouwhentherainstormcame?Iwasintheliving-room.WhenI…Hewasdoing…WhenIcalledhimup,hewassleeping.Makeupthes
2、entences.WhileI…Hewasdoing…WhileIwalkedtoschool,hewaseating.WhenI…Hewasdoing…WhenIreadthenewspaper,hewaswatchingTV.Whatwereyoudoingateightlastnight?Iwastakingashower.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherhomework.GrammarFocus读下列句子,你能总结出句子中包含的语法吗？Whatwash
3、edoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywithherhomework.when和while都可表
4、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？1.过去进行时中的when和while合作与探究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.①Iwaswalkingtoschoolw
5、henIsawacatinatree.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
6、，主句用__________时态，从句用过去进行时态。一般过去while1.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.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,atthistimeatthattime,atthatmoment等e.g.Whatwereyoudoinga
7、t10yesterdaymorning?Iwaswritingalettertomyfatheratthatmoment.b: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：e.g.Wewerenotsleepingathome.Washefeelingwell?Lookatthetableandwritesentenceswithbothwhileandwhen.活学活用4a1.WhileJohnwa
8、stakingphotos,Maryboughtadrink.JohnwastakingphotoswhenMaryboughtadrink.2.WhileJohnwasplayingthepiano,Maryleftthehouse
