人教课标版英语必修2 Unit 3 Computersreading ppt课件.ppt

Unit3ComputersWarmingupandreading,永新县禾川中学肖超兰,Guess!,Atoy?,Ahandbag?,Computers,Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydontlikemenow.DoyouknowwhoIam?,abacus,Guessmore:,Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?,calculator,Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseImsmallenoughforyoutotakemewithyou.,laptop,DoyouknowwhoIam?,Whatdotheyhaveincommon?,IthinkthatInmyopinionIbelievethatWhatsyourreason?Whydoyouthinkso?,1.Theycanbeusedforcalculating.2.Theycandealwithmathsproblems.3.Theyareourfriends.4.Theyareusefulandhelpful.,Discussion,hugecomputer,PC,PDA,laptop,abacus,calculator,thedevelopmentofcomputers,robot,Whatdoyouthinkwillbethenextdevelopment?,workforusinMars,dohousework,仿真机器人,Howmuchdoyouknowaboutacomputer?,GivetheEnglishnameofthefollowingpicturesofthecomputercomponents(组件),WhatisitinEnglish?,Mainboard(主板),WhatisitinEnglish?,CPU(centralprocessingUnit)中央处理器,WhatisitinEnglish?,harddisc,WhatisitinEnglish?,Keyboard(键盘),WhatisitinEnglish?,monitor,screen,WhatisitinEnglish?,mouse鼠标,DVD-ROM,WhatisitinEnglish?,otherusefulwordsandexpressionsaboutcomputer,NetworkWebsiteProgramVirusHackerDownloadSoftwareHardware,UploadHomepagePasswordDesktopUsernameClick,网络,站点,程序,黑客,病毒,下载,软件,硬件,上传,主页,密码,桌面,用户名,点击,Reading:WHOAMI?,WhoamI?Iamacomputer.Findoutthetopicsentenceofeachparagraph.Para.1:Para.2:Para.3:Whatisthemainideaofthepassage?,OvertimeIhavebeenchangedquitealot.,Thesechangesonlybecamepossibleasmymemoryimproved.,Sincethe1970smanynewapplicationshavebeenfoundforme.,Task1Fastreading,Thedevelopmentorhistoryofcomputers,Whatwasthecomputercalledindifferentstages?Itbeganasa(n)_inFrancein1642.2.About200yearslateritwasbuiltasa(n)_byCharlesBabbage.3.In1936itwasmadetoworkasa(n)_.4.Lateritwasbuiltasa_.Asa_,ithasbeenusedinofficesandhomessincethe1970s.,calculatingmachine,analyticalmachine,universalmachine,PC(personalcomputer),laptop,Task2Carefulreading,Whatarethethingsthatmadethecomputersmemoryimproved?_,tubes,transistors,WorldWideWeb,chips,network,Whatnewapplicationshavewefoundforthecomputersincethe1970s?communicationfinancetraderobotsmobilephonesmedicaloperationsspacerocketsprovidinghumanswithalifeofhighquality,1642:1822:1936:1940s:1960s:1970s:Now:,Finishthetimeline,Thecomputerbeganasacalculatingmachine.,TheanalyticalmachinewasmadebyCharlesBabbage.,Thecomputergrewrapidlybothinsizeandinbrainpower.,Thecomputerhadgrownaslargeasaroom.,Computerswereusedinofficersandhomes.,Computersconnectpeopleallovertheworldtogether.,Thefirstfamilyofcomputerswasconnectedtoeachother.,Ibeganasa_in1642inFrance.In1822Iwasbuiltasan_.Thenin1936AlanTuringwroteabookandbuilta_.Astheyearshavegoneby,Ihavebeenmade_and_butIbecame_and_.,calculatingmachine,analyticalmachine,machine,Fillintheblanks,universal,smaller,smaller,cleverer,quicker,Inthe_theygavemeafamilyconnectedbya_.Nowpeoplecallitthe_.Ihavebeenusedin_and_sincethe1970s.SoIbecameaPC.Sincemy_Ihavetrulybeenbuilttoservethe_.,network,1960s,Internet,human,race,offices,homes,birth,Whataretheadvantagesanddisadvantagesofthecomputer?,Task3Discussion,Advantagescommunicatewithfriendslistentothemusicseefilms&watchnewsplaygamesdoshoppingsavealotoftimedoalotofusefulthings,DisadvantagesSomepeopleespeciallytheteenagersabandon(沉迷于)themselvestothecomputergamesandchatt