人教版高一英语必修2 Unit3 Computers全单元教案

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1、Unit3ComputersPeriod1:Listening&SpeakingGOALS:1.Topractiselisteningcomprehension.2.Topractisemakingdecisionsandreasoning TEACHINGPROCEDURES:Step1.revision1.checkthehomeworkexercises.1).Ithasbeenreportedthatchildrenwillbeofferedfreeeducation．Ithasbeenreportedthatfreeeducationwillbeofferedtochi

2、ldren．2).Ithasbeensaidthatwewillbeofferedthelatestcomputersciencecoursebook．Ithasbeenplannedthatthelatestcomputersciencecoursebookwillbeofferedtous．3).IhavebeentoldbyPeterthatIwillbelenthisnotebookcomputerforaweek．IhavebeentoldbyPeterthathisnotebookcomputerwillbelenttomeforaweek．2.Question:Wh

3、atcancomputersbeusedas?Step2.Lead-inAsweknow,scienceandtechnologyisdevelopingveryfastandcomputershavebecomesmallerandsmaller.Theyhavebeenusedinmanyfields.So,the21st centuryisthecenturyofinformationtechnologyWhatdoesitmean?Doesinformationtechnology/ITonlymeanthingslikecomputers?Ofcausenot.Actu

4、ally,itmeansmorethancomputers.ComputersarejustonekindofIT.WhatelsedoyouknowispartofIT?(TV,radio,CD-ROM,DVD,books……)Step3.Listening(SB)1.       Pre-listening:WhatarethechangesbroughtbydifferentformsofIT?Whataretheadvantagesanddisadvantagesofthem?2.While-listening:Gothroughthechartandmakesureth

5、estudentslookatthechartbeforetheylistentothetape.(Thisistosharpentheirattentionandlistenfortheanswers.Thiswillalsohelpthemgetthegistofthetext.)ThenListentothetapeandfinishfillinginthechart.(Ifnecessary,playthetapeforseveraltimes.)Say:Afterlisteningtotheirtalk,weknowallkindsofIThavebothdisadva

6、ntagesandadvantages．Let’schecktheanswerstogether.TypeofITAdvantagesDisadvantagesTVYoucanbothlistenandwatch．Youcannotwritetofriends．WebYoucanfindinformation．Itisveryexpensive．RadioYoucanlistentoEnglish．Youcannotwatchafilm．BookYoucangetinformation．Sometimesitisoutofdate．3.Post-listening:1)(pair

7、work):decidewhichtypeofITisbestforyoutouserightnow.Makeyourchoiceandgiveyourreasonsbyusingthefollowingexpression_r_rs.   Ithinkthat….   Inmyopinion,….   Ibelievethat….   Iagreebecause….   Idisagreebecause….   I’vedecidedthat….2)(groupwork):Di