搜索
教学准备1.教学目标1.Topractiselisteningcomprehension.2.Topractisemakingdecisionsandreasoning2.教学重点/难点1.Topractiselisteningcomprehension.2.Topractisemakingdecisionsandreasoning3.教学用具课件4.标签Unit3Computers教学过程Step1.revision1.checkthehomeworkexercises.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)1.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:Computersareusefulandhavebroughtuslotsofgoodthings,buttheyalsocausebadeffects.Whatattitudeshouldwehavetowardsthecomputer?(Makegooduseofitbutnevergettrappedbyit.)Step4.Speaking1.Pre-speakingSay:Fromwhatwehavelearn,weshouldadmitthatcomputersandthewebhaveagreatinfluenceontheschooleducationaswellaspeople’slife.Ithascomeintopeople’severydaylifeandmanyfamiliesholdcomputersintheirhomes.Nowthereisataskforyou.2.While-speaking1)Situation:Youhavebeenaskedbyyourparentstohelpchoosecomputersforyourhome.Youandyourfriendhavelookedatseveralcomputers.Talkaboutthespecialthingseachcomputercando.Makeadecisionaboutwhichkindofcomputertobuyandexplainwhy.Informationinput:Showstudentssomepicturesofdifferentcomputers(desktopcomputer&laptopcomputer&…)Languageinput:Usefulexpressions(Repeatittostrengthenstudents’abilityofuseit.)SupportinganopinionChallenginganopinionIthinkthat…,because…Perhaps,butwhatif/about…?First,…Haveyouthoughtabout…?Onereasonisthat…Whatmakesyouthinkthat…?Ithinkitisbetterbecause…Idon’tlikeitbecause….(Pairwork)Usetheexpressionstosupportyouropinionorchallengingother’sopinions.2)Oralreport:(individualwork)Doanoralreporttoyourfatherandstartyourreportlikethis:Ilookedatmanydifferentcomputers.TheoneIhavechosenisthePEPpersonalcomputer.Oneofthemainreasonsisthatitissuitableforhomes.Ifoundthat…3.Post-speakingConclusion—Whatusefulexpressiondoweusetomakeadecisionandreason?(Inthisway,theycanreviewandusethewordsandphrasesagain.)Step6Pre-writingSay:Imaginewhatproblemsanddelightsthisandroidmighthavetodealwithwhileitisservingyou.Tryyourselfinsomeoneelse’sshoesisanimportantwayofunderstandinghowotherpeoplefeel.Thendiscuss:Youareanandroid.Youworkforafamilywithonechildwhoisveryspoiled.Theparentswantyoutodoeverythingforthem.Theparentsarenice,buttheyoftenaskyoutowatchovertheirchild.Howdoyoufeel?Whatwouldyoudoifthechildaskedyoutodohis/herhomeworkforhim/her?Wouldyouevertellthechild“no”?Step7WritingSay:Writeapassageabouttheresultofyourdiscussion!Itshouldcontain:Whatdoyouhavetodo?Whatisthechildlike?Whatistheparents’requirementofthechild?Whatdotheparentswantyoutodo?Whatdoesthechildwantyoutodo?Thenwhatwillyoudo?Howdoyoufeel?Samplewriting:Helloeverybody,mynameisLiuYan．Iama321modelandroid．IworkfortheLifamily.MrandMrsLiworkveryhardtoo．MrLiisanarchitectanddesignsgreattallapartmentblocks．MrsLiisadoctorandhastolookaftermanypatients．IrememberalltheplansforMrLi'sprojectsandcantellMrsLiwhichdrugsarethebesttogiveanyparticularpatient.AndIalsolookaftertheirlibrary.Istoreallthebooksthattheyborrowfromtheirschoolorfriendsinmybrain．Ofcoursemybrainisaslargeasamountain,soworklikethatisnotroubletome．Ireallyeatbooksjustlikepeopleeatfood．TheLishaveachildwhoisveryspoiled.HeneedsmetorememberallhisschooltextbookssothatIcandohishomeworkforhim．Hejustgivesmetheinformationonthesubject,whathastobedoneandthepagenumbersandIgetonwithitwhileheenjoyshimselfwithhisfriends．SometimesIdon'tthinkitisrighttodohishomeworkforhim—it'ssomewhatcheating.However,hisparentsareveryconcernedatthepr