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1、Unit5Whatwereyoudoingwhentherainstormcame?SectionA3Grammarfocus-4cIwastalkingwithmymotherinmyhouse.Whatwereyoudoingwhentherainstormcame?Iwasonthestreet.Wherewereyouwhentherainstormcame?Iwaswaitingforthebusatthebusstop.Whatwereyoudoingwhentherainstormcame?過去進行時1.概念
2、:表示過去某一時刻或某段時間內(nèi)正進行的動作。2.構(gòu)成:was/were+動詞現(xiàn)在分詞3.用法:a:表示某一時刻正進行的行為,與特定的過去時間狀語連用,常見的時間有:at8lastnight,atthistimeatthattime,atthatmoment等e.g.Whatwereyoudoingat10yesterdaymorning?Iwaswritingalettertomyfatheratthatmoment.b:表示過去某段時間內(nèi)正進行的動作。e.g.Wewerebuildingahouselastwinter.
3、Theywerewaitingforyouyesterday.否定句和疑問句:e.g.Wewerenotsleepingathome.Washefeelingwell?學習目標:1復(fù)習過去進行時,學會談?wù)撨^去的事情.2.了解when和while的用法及區(qū)別。3.能夠在困境中互相幫助。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讀下列句子,你能總結(jié)出句子中包含的語法嗎?Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,Jennywa
6、shelpingMarywithherhomework.合作與探究when和while都可表示“當……的時候”,引導(dǎo)時間狀語從句。你知道兩者在過去進行時中的用法有什么不同嗎?過去進行時中的when和while1.以when和while引導(dǎo)的時間狀語從句1)延續(xù)性動詞和非延續(xù)性動詞延續(xù)性動詞指動作可以延續(xù)一段時間,而不是瞬間結(jié)束。如:work、study、drink、eat等。非延續(xù)性動詞指動作極為短暫,瞬間結(jié)束。如:start、begin、hit、jump、knock等。①IwaswalkingtoschoolwhenIs
7、awacatinatree.②WhenSallyarrivedhome,hermotherwascleaningthehouse.主句的動作是持續(xù)性的,而從句動作是短暫性的,此時用______引導(dǎo)時間狀語從句,主句用__________時態(tài),從句用一般過去時態(tài)。過去進行when③WhileIwassleepinginthebedroom,someoneknockedatthedoor.④Davidfellwhilehewasridinghisbike.主句的動作是短暫性的,從句的動作是持續(xù)性的,此時用_______引導(dǎo)從句
8、,主句用__________時態(tài),從句用過去進行時態(tài)。一般過去while總結(jié)1)when可指時間點,又可指時間段,從句中可用延續(xù)性動詞,也可用非延續(xù)性動詞。2)while總是指一個時間段,從句中必須用延續(xù)性動詞。2)當兩個動作同時持續(xù)發(fā)生的時候,主句和while引導(dǎo)的從句都用過去進行時.e.g.Iwas