新课标高中英语人教版必修二第三单元阅读课件unit3 computers.ppt

0,1,5,4,3,2,Welcometoourclass!,Welcometoourclass!,First,letsplayagame!,Guessinggame,Withthedevelopmentofscienceandtechnology,manynewthingsappearinhumanbeingslife.,WhoamI?,Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydontlikemenow.DoyouknowwhoIam?,abacus,Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?,calculator,Iamverybig.Scientistsusemetosolvesomemathematicalproblems.DoyouknowwhoIam?,hugecomputer,PCPersonalComputer,Imasmall,relativelyinexpensivecomputerdesignedforanindividualuser.Imbasedonthemicroprocessortechnology.Athome,peopleusemetosurftheInternetandplaygames.DoyouknowwhoIam?,Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseImsmallenoughforyoutotakemewithyou.DoyouknowwhoIam?,notebookcomputer/laptop,PDAPersonalDigitalAssistant,IamsosmallinsizethatIcanfitinyourhand.Iusuallyhaveasmallscreenusuallybiggerthanadigitalphone,howeversmallerthanthesmallestlaptop,Imagreatwaytostoretelephonenumbers,accesstheinternet,makecalculations,andsoon.DoyouknowwhoIam?,robot,Imamachinethatworksautomatically.Icandoawidevarietyoftasks,especiallysuitablefordoingjobstooboring,difficult,ordangerousforhumanbeings.DoyouknowwhoIam?,PDA,abacus,calculator,hugecomputer,PC,laptop,Whatsnext?,Canyoutelltheorderoftheseinventions?,robot,robot,Whataboutinthefuture?,Unit3Computers,Wecanusethecomputerto,listentomusic,watchmovies,searchfor,communicatewith,doshopping,WhoamI?,Reading,personrealhappytechnologysimple,technologicalsimplifypersonalrealityhappiness,Matchthewordswiththesameroots.,词根,start,0,1,2,3,1.Whoisthespeaker?,Itisacomputer.,2.Inwhichorderisthetextwritten?,Accordingtothetime,Fast-Reading,ChoosethebestanswerWhatsthemainideaofthetext?A.Thecomputerwantstofind“whoheis”.B.Thefunctionalchangeofthecomputer.C.Thecomputerbecomespopulararoundtheworld.D.Thehistoryofthecomputer.,Fast-Reading,start,0,2,3,5,4,1,Reading,togetdetailedinformation,P19,Carefulreading,Timeline1642:_1822:TheAnalyticalMachinewasmadebyCharlesBabbage.1936:_1940s:_thefirstfamilyofcomputersconnectedtoeachother.1970s:_Now:_,Thecomputerbeganasacalculatingmachine.,Thecomputergrewrapidlybothinsizeandinbrainpower.,Computersservehumansasadevotedfriendandhelper.,1960s:,Computerswereusedinofficesandhomes.,Thecomputerhadgrownaslargeasaroom.,comprehending,Moredetailedinformationabouteachparagraph,Reading,OvertimeIhavebeenchangedalot.,Thesechangesonlybecamepossibleasmymemoryimproved.,Sincethe1970smanynewapplicationshavebeenfoundforme.,calculatingmachine,analyticalmachine,universalmachine,PC,laptop,tubes,transistors,chips,network,WorldWideWeb,communications,finance,trade,robots,mobilephones,operations,spacerockets,TrueorFalse,AlanTuringbuiltanAnalyticalMachinetosolveanymathematicalproblems.Peoplebegantorealizethatthecomputergotclevererandquickerwithtimepassing.Thecomputerbegantoservethehumanracesinceitwasbroughtintopeopleshomes.Sincethe1960s,thecomputerwasusedbypeoplearoundtheworldthroughtheInternet.5.Thelargerthecomputeris,themorememoryithas.,F,T,F,T,F,auniversalmachine,itsbirth,Ibecamesmaller,butIgotclevererandquicker.AndmymemorybecamesolargethatevenIcouldntbelieveit!,1.Howoldisthecomputer?A.75B.370C.112D.2342.Whendid“I”notfeellonely?A.1940sB.1970sC.1980sD.1960s3.Whatfunctionisnotmentionedinthetext?A.spaceresearchB.medicaloperationC.militarilyD.communication,Multiplechoice,4.Whatcanyouinferfromthetext?A.Thecomputerhasartificialintelligence.B.Thecomputerchangesalotovertheyears.C.Thecomputerwasnotconnectedbyanetworkuntilintheearly1960s.D.Nowthecomputercanonlybeusedtodealwithinformation.,Reading,Summaryofthetext,Iwasbornasa_machinein1642.WhenIwasyoung,Iwasgoodat_difficultsums.About200yearshadpassedbeforeIcouldthink_andproduce_answers.Atthattime,Iwascalledan_machine.In1936,Iwasbuiltasa_machine.Ihadtheability,Summary:,calculating,simplifying,logically,quicker,analytical,universal,to_anymathematicalproblem.Fromthenon,Igrewrapidlybothin_andmemory.AfterIstoredmymemoryon_insteadofin_Ibecame_insizebut_inintelligence.Astimewentby,Ibecameevensmaller,forIputmymemoryonaverysmall_,whichmademebecomePCandlaptop.,solve,size,tubes,smaller,cleverer,chip,transistors,Ithe1960s,Icouldbeconnectedwithothercomputersbya_.Fromthenon,Iwasabletosharemyknowledgewithothersthroughthe_.Afterthat,Ihadmanynew_.Now,Iamgladtoservehumanbeingsasa_andapleasant_.,network,applications,devoted,helper,WorldWideWeb,friend,Homework:,1.Findoutthesentencesthatyoudontknowinthetext.,2.Findoutmorewordswhichhavethesamerootsintheunit.,Well-done!,Thankyou!,Whataretheadvantagesanddisadvantagesofthecomputers?Inmyopinion,Icanusethecomputerto.,Discussion,AdvantagesWecanusethecomputerstomunicatewithothers,DisadvantagesSomestudentsmaygettooaddicted(沉溺于)toit.Somestudentswastetoomuchtimeinplayingcomputergames.Somestudentsspendtoomuchtimeinchattingwithothersandmaybecheatedbysomeoneonline.Asaresult,theyhavelittletimetostudy.Itisbadforoureyesandhealthtospendlongtimeinfrontofcomputers.,ConclusionThere