八年级英语下册 Unit 8 A green world复习课件 （新版）牛津版.ppt

8AUnit8,NaturalDisasters,Doyouknowanyotherdisasters?Canyoutalkaboutthem?,Anearthquakemaymakethousandsofhousesfalldown.,Afloodcanwashmanyvillages、peopleandanimalsaway.,Lightningmaystartbigfireinacity.,(catchfire着火),fire,drought,thunderandlightning,typhoon,volcano,flood,snowstorm,earthquake,Acarcrashedintoatree.,Thedifference,Ataskaboutreading,earthquake,Before,shake,loud,fear,directions,nervous,tried,Finally,lucky,Answersomequestionsaboutthereading.1.Whendidtheearthquaketakeplace?2.CouldTimmyrunoutofthebuildingwhentherealnoisecame?3.WhatdidTimmytellhimselftodowhenhewastrapped?4.HowlongdidTimmystayinthebuilding?5.Whatcanwelearnfromthepassage?,Itwasabouttwooclockintheearlymorning.,No.,(Hetoldhimself)tocalmdown.,Forhours.,Whensomethingterriblehappens,weshouldkeepcalm/wemustbebrave/wehadbetterbewise.,Expressionsandimportantsentences,Answermorequestionsaboutthereading.1.WhatwasTimmydoingwhentheearthquaketakeplace?2.Whatwerepeopledoingwhilepiecesofglassandbrickswerefallingdown?3.WhathappenedasTimmywastryingtofindhiswayout?,Timmywassleepingwhentheearthquaketookplace.,Peoplewererunninginalldirectionswhilepiecesofglassandbrickswerefallingdown.,AsTimmywastryingtofindhiswayout,hesuddenlyheardsomenoiseabovehim.,过去进行时的用法和结构,过去进行时主要表示：在过去某一时刻正在进行的动作（a）Theywereeatingbreakfastat7:00amyesterday.（b）Iwaswritingaletterthistimeyesterday.在过去某一阶段一直在进行的动作（a）From1983to1998,hewasteachingatYale.（b）Theywerebuildingabridgelastwinter.（c）HewaswatchingTVbetween8and10lastnight.,时间状语thistimeyesterday,atthattime,atnineyesterdaymorning,thewholeafternoon,from6:00to8:00yesterdaymorning,巩固练习1.What_yourbrother_(do)atnineoclocklastnight?2.They_(listen)tomusicatthattime.3.WhenIsawhim,he_(search)theInternet.4.They_(discuss)aprobleminthemeetingroomatthistimeyesterday.5._Amy_(visit)theScienceMuseumfrom9:00a.m.to11:00a.m.yesterday?,was,doing,werelistening,wassearching,werediscussing,Was,visiting,连词while/when/as与过去进行时当两个延续性动词(twolongactions)同时进行时，我们可以在两个句子中都用过去进行时，并用while连接。1.Peoplewererunningwildlywhilepiecesofglassandbrickswerefallingdown.2.SuzywasmakingasnowmanwhileKittywasstandingbesideher.,当延续性动作进行的同时也有别的动作发生,用when或while或as放在延续性动作之前连接两动作,延续性动作(longaction)用过去进行时而短暂性动作(shortaction)用一般过去时.1.Theearthquakestartedwhile/when/asIwasdoingsomeshopping.2.IwastryingtofindmywayoutwhenIsuddenlyheardsomenoiseaboveme.,巩固练习1.Mywalletdroppedontheground_Iwasrunning.2._Iwasfallingasleep,therewasaloudknockonthedoor.3._hewasreading,anearthquakestarted.4.Werethestudentslisteningtotheteachercarefully_theteacherwasgivingalesson?5.Wassheclearingupthedesk_thebellrang?,while/as/when,while,when,While/As/When,While/As/When,1.Whendidtheearthquakehappen?2.Howmanypeopledied?3.Howmanypeoplewerehurt?4.Howmanypeoplebecamehomeless?,Listening唐山地震录音.mp3,InearlymorningonJuly28th,in1976.,Morethan250,000people.,About800,000people.,Severalmillionpeople.,OnJuly28,1976,anearthquakeh_thesleepingcityofTangshan,inNorthChina.Theverys_earthquakewasrareinChinaandkilledmorethan250,000people.LiMeiwasoneofthev_.Atthattime,LiMeiandherparentsweresleeping.Suddenly,thehousebegantoshake,thenthewindowsbrokeandthehousefelld_.Allherfamiliesweretrappedi_thehouse.Everyonewasinfearandscreamedforh_.Soon,thepolicearrived,andtheyf_LiMei.ShewasOK.H_,shewasveryfrightened.U_,thelegsofherparentswerebadlyhurt.Thepolicesentthemtotheh_atonce.,TheearthquakeinTangshan,it,erious,ictims,own,n,elp,ound,owever,nluckily,ospital,Speaking:Natu