高中英语 Unit 3 Computers Listening & Speaking素材新人教版必修2-豆柴文库

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2用心爱心专心Unit3ComputersThe4thperiod:Listening&SpeakingGOALS:1.Topractiselisteningcomprehension.2.TopractisemakingdecisionsandreasoningTEACHINGPROCEDURES:Step1.revisioncheckthehomeworkexercises.1).Ithasbeenreportedthatchildrenwillbeofferedfreeeducation．Ithasbeenreportedthatfreeeducationwillbeofferedtochildren．2).Ithasbeensaidthatwewillbeofferedthelatestcomputersciencecoursebook．Ithasbeenplannedthatthelatestcomputersciencecoursebookwillbeofferedtous．3).IhavebeentoldbyPeterthatIwillbelenthisnotebookcomputerforaweek．IhavebeentoldbyPeterthathisnotebookcomputerwillbelenttomeforaweek．2.Question:Whatcancomputersbeusedas?Step2.Lead-inAsweknow,scienceandtechnologyisdevelopingveryfastandcomputershavebecomesmallerandsmaller.Theyhavebeenusedinmanyfields.So,the21stcenturyisthecenturyofinformationtechnologyWhatdoesitmean?Doesinformationtechnology/ITonlymeanthingslikecomputers?Ofcausenot.Actually,itmeansmorethancomputers.ComputersarejustonekindofIT.WhatelsedoyouknowispartofIT?(TV,radio,CD-ROM,DVD,books……)Step3.Listening(SB)Pre-listening:WhatarethechangesbroughtbydifferentformsofIT?Whataretheadvantagesanddisadvantagesofthem?2.While-listening:Gothroughthechartandmakesurethestudentslookatthechartbeforetheylistentothetape.(Thisistosharpentheirattentionandlistenfortheanswers.Thiswillalsohelpthemgetthegistofthetext.)ThenListentothetapeandfinishfillinginthechart.(Ifnecessary,playthetapeforseveraltimes.)Say:Afterlisteningtotheirtalk,weknowallkindsofIThavebothdisadvantagesandadvantages．Let’schecktheanswerstogether.TypeofITAdvantagesDisadvantagesTVYoucanbothlistenandwatch．Youcannotwritetofriends．WebYoucanfindinformation．Itisveryexpensive．RadioYoucanlistentoEnglish．Youcannotwatchafilm．BookYoucangetinformation．Sometimesitisoutofdate．3.Post-listening:1)(pairwork):decidewhichtypeofITisbestforyoutouserightnow.Makeyourchoiceandgiveyourreasonsbyusingthefollowingexpressions.Ithinkthat….Inmyopinion,….Ibelievethat….Iagreebecause….Idisagreebecause….I’vedecidedthat….2)(groupwork):Discussion:Computersareus