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高中英语(Module4SandstormsinAsia)课件4外研版教材必修3课件.ppt

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Module4SandstormsinAsiaLearningGoals:一.【学情调查，情境导入】DisastersofNature： 沙尘暴， 龙卷风， 飓风, 台风， 地震， 海啸， 洪水， 闪电, 雷暴， 火山喷发沙尘暴形成有三个要素：即强风、沙源和不稳定的空气。除上述三大因素之外，人类生产活动等因素对沙尘暴的形成也很重要。如人为破坏植被、工矿交通建设、大规模施工等对地表的破坏，为沙尘暴发生发展提供了细沙和尘土。CentralAsiaSandstormshavebeena_____disasterformanyAsiancountries.Theyare___frightening_____apersonwhohas_______onethinksthattohave____________itisaterribleexperience.Nowpeople_______moretreesanddigupmoregrass.________,sandstormsappeartohaveincreasedinrecentyears.To______thesituationbecomingworse,thegovernmentisplantingmoretrees.Shesaidshewouldcometoseeme ____________________. 她说，要是没什么事情 阻碍她的话，她就来看我。表示“阻止某人做某事”的三个短语是：2.major3.becaughtin②becaughtinin4.cutdown:situation1cyclinginasandstormsituation2thebadeffectsontheenvironmentofcuttingdowntreessituation3HowtoprotecttheenvironmentPart1:HeadingAposterHomework_____________,peoplecutdowntreesanddigupgrasstobuildhousesandgrowmorecrops.________,desertificationbecomessoseriousthatitcausesmanysandstormseveryyear._________sandstormshavebecomeamajorproblemthatmanycountriesarefacing,havingagreateffectonpeople’slives. Sometimesit’sdifficultforpeopletosurvive asandstorm.Topreventsandstorms,________,weshouldplantmoretreesandkeepthebalanceofnature. Thebadweatherpreventedus______ theprojectontime. tocompleteB.completed C.completingD.fromcomplete1).The______aimoftheairraidwas thecompletedestructionofthecity. A.mostB.mostly C.majorD.majority3).Insuchdryweathertheflowerswill havetobewateredifthey______. A.havesurvivedB.aretosurvive C.wouldsurviveD.willsurvive5).Withtheelectricity_____,allthe machinesstopped. A.cutoffB.cutdown C.wascutoffD.wascutdown 6).Iftrafficmovesatlowspeed,the numberofaccidentsis______. A.pulledbackB.cutdown C.cutoffD.turnedoff7).Whenthemotherreturned,shesaw herson_____vegetablesintopieces. A.cutdownB.cutup C.tocutdownD.tocutup 8).ThemomentIbegantospeak, he_____. A.cutdownB.cutoff C.cutinD.cutup 9)Astormisprobabletocome. Let’shurrysoasnotto______it. A.catchB.becaught C.becaughtinC.catchin 1.为了种地建房，人们毁坏森林破