人教版+高中英语课件+book+unit3+warming up and reading.ppt

Unit3Computers,Thetechnologydevelopssoquicklythatmanynewthingsappearinhumanbeingslife.,Letsguesswhattheyare:,Playagame,Car,1.Iamamachinewhichmovesveryfastonfourwheels.Youmustbeverycarefulwhenyoudriveme.WhoamI?,washingmachine,2.Iwashclothesforpeople.WhoamI?,3.Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.,calculator,computer,4.Iamamachine,whichyoucanusetoplaygames,watchmovies,listentomusic,communicatewithyourfriends,gatherinformations,mousemonitorspeakerkeyboard,Whatdoyouknowaboutcomputers?,Doyouknowthehistoryofcomputers?,1,2,3,4,PC,analyticalmachine,calculatingmachine,laptop,universalmachine,robot,1,2,3,4,5,6,Predict:trytoputtheminorder,Unit3Computers,Reading,PC,()analyticalmachine,()calculatingmachine,()laptop,()universalmachine,()robot,1,2,3,4,5,6,thehistoryofthecomputer,1,2,3,4,5,6,Reading,1.Whoisthespeaker?2.Whatisthemainideaofthewholepassage?A.Theearlydevelopmentofthecomputer.B.Thelatedevelopmentofthecomputer.C.Theimportanceofthecomputer.D.Thedevelopmentofthecomputer.3.Inwhatorderisthispassagearranged?(安排）,Time.,Itisacomputer.,Attentions:underlinethetimeinthetext,Skimming,Timeline,1642:Thecomputerbeganas_:TheAnalyticalMachinewasmadebyCharlesBabbage.:1940s:_:Thefirstfamilyofcomputerswasconnectedtoeachother.1970s:Now:,acalculatingmachine,1822,Thecomputerhadgrown,1960s,Computersconnectpeopletogether.,Thecomputergrewrapidlybothinandin,Computerswereusedin,1936,size,brainpower,aslargeasaroom,officesandhomes,allovertheworld,calculatingmachine,analyticalmachine,universalmachine,PC(desktop),laptop,Simplifydifficultsums.,Thinklogicallyandproduceananswerquickerthananyperson.,Solveanydifficultmathematicalproblem.,Usedinofficesandhomes.,Changesinfunction,ScanningReadthetextcarefullyandfindoutthedetails,OvertimeIhavechangedalot.,ThesechangesonlybecamepossibleAsmymemoryimproved.,Sincethe1970smanynewapplicationshavebeenfoundforme.,Findoutthetopicsentenceofeachparagraph,Attentions:youshouldpaymoreattentiontothebeginningortheendoftheparagraphtofindoutthetopicsentences,Trueorfalse(Para.2),1.Firstmymemorystoredintubes,thenonverysmallchipsandlaterontransistors.thenontransistorsandlateronsmallchips2.Astimewentby,Iwasmadebigger.3.Inthe1960sthefirstfamilyofcomputerswasconnectedtoeachother.4.Computerscouldshareinformationandexpresstheirfeelings.,butcouldnt,Para3:,Communication/finance/trade/robotsmobilephones/medicaloperations/spacerockets,providingalifeofhighquality,WhatapplicationsarementionedinPara3?,Inhowmanywaysdowesaythecomputerchanged?Whatarethey?Size:Intelligence:Speed:Function:Peopleopinion:,quicker,cleverer,calculating-dealingwith,communicatingwith,clever&useful,Smaller,Weak-,Strong,Summary,Ibeganasa_machinein1642inFrance.In1822Iwasbuiltasan_machine.Thenin1936AlanTuringwroteabookandbuilta_machine.Astheyearshave_,Ihavebeenmade_.Thereweretimeswhenmysizetotally_.Andmymemorybecameso_lthatIcouldntbelieveit.Inthe1960stheygavemeafamily_byanetwork.Iwasableto_withothersthroughtheWorldWideWeb.Sincethe1970smanynewapplications_forme.,calculating,analytical,universal,goneby,smaller,connected,havebeenfound,sharemyknowledge,large,changed,Review,Questionnaire(问卷调查）,HowdoyouusecomputersandtheInternet?,Yes,No,Ioftenuseacomputerto,Isometimesuseitto,andIneveruseitto,Shouldhighschoolstudentssurftheinternet(上网)?,Ithinkwehighschoolstudentsshouldsurftheinternetbecause(first,second,third),Idontagreewithyou.Inmyopinion,itisbadforstudentstoThereasonisthat,Iagreewithyou.Ithinkwecanalso,Discusswithyourpartners,Interview,ShouldhighschoolstudentssurftheInternet?,Thereporterwillinterviewsomestudentsandteachersabouttheissue.,Withthedevelopmentofcomputertechnology,theinternethasbecomemoreandmorepopularamongstudents.However,justasasayinggoes,acoinhastwosides.Theinternetbringsbothadvantagesanddisadvantagestostudents.,AdvantagesCommunicatewithfriendslistentothemusicseefilms&watchnewsplaygamesdoshoppingsavealotoftimedoalotofusefulthings,DisadvantagesSomepeopleespeciallytheteenagersabandon(沉迷于)themselvestothecomputergamesandchattingontheInternet.Asaresult,theyhavelittletimetostudy.Somepeopleusethecomputerwrongly,ConclusionThereisnodoubtthatcomputerhastwosides,too.Ifwemakegooduseofit,itwillmakeourlivesmorecolorfulandconvenient.Butdontloseyourselfinplayingcomputers.Justremember:Keepfit,studywellandworkhard.,Homework,1.Dothewriting:ShouldhighschoolstudentssurftheInternet?2.Dealwiththelanguagepointsinthetextusingreferencebooksordictionaries.