人教版高一英语必修2所有精华版课件ppt.ppt

Unit3Computers,ReadingWHOAMI?,Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydontlikemenow.DoyouknowwhoIam?,abacus,Riddles(谜语):,Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?,calculator,Riddles(谜语):,Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseImsmallenoughforyoutotakemewithyou.,notebookcomputer,DoyouknowwhoIam?,Riddles(谜语):,Discussion,Whatdotheyhaveincommon?,IthinkthatInmyopinionIbelievethatWhydoyouthinkso?Whatsyourreason?,Ithinktheyallcancalculatesomething.Itcandealwithsomemathsproblems.,Ibelievethattheyareourgoodfriends.Inoureverydaylife.Wecannotfinishourworkquicklywithoutthem.,Inmyopinion,peopleimproveabacus,makeitmoreusefulandmakeitacomputer.Theyarebeingusedwidelyandconvenientlyintheworld.,HavethecomputerandInternetbecomepartofyourlife?Whatcanyouusethemtodo?,THINKING,IusethecomputerorInternetto:,typemyhomeworkdrawpicturesplaygamescommunicatewithmyfriends.gatherrelatedinformationformylessonsbuythethingsIlike,egbooksandclothes.listentomusicwatchmovies.,Howmuchdoyouknowaboutacomputer?,GivetheEnglishnameofthefollowingpicturesofthecomputercomponents(组件),WhatisitinEnglish?,Mainboard(主板),WhatisitinEnglish?,CPU(centralprocessingUnit)中央处理器,WhatisitinEnglish?,harddisc,WhatisitinEnglish?,floppydisc,WhatisitinEnglish?,Keyboard(键盘),WhatisitinEnglish?,monitor,screen,WhatisitinEnglish?,mouse鼠标,DVDROM,DigitalVersatileDiscReadOnlyMemory数字通用光盘,WhatisitinEnglish?,WhatisitinEnglish?,Printer,WhatisitinEnglish?,Modem（调制解调器）,Completethesentenceswithsomeofthewordsinthebox.,Monitor,mouse,keyboard,harddisc,floppydisc,CD-ROM,printer,modem,A_isusedtoseeyourdataonacomputer.A_ordiskisthemaindevicethatacomputerusestostoreinformation.A_isamachineforprintingtextorpicturesontopaper,especiallyoneconnectedtothecomputer.,monitor,harddisk,printer,Monitor,mouse,keyboard,harddisc,floppydisc,CD-ROM,printer,modem,A_isusedtoputdataintoacomputer.A_isoftenusedtoconnectcomputerstoeachotherthoughphonelines.Datacanalsobestoredina_,whichissmallandcanbecarriedeasily.A_isadiscthatcontainscomputerdata.Itcanstorealargeamountofdata.,keyboard,modem,floppydisc,CD-ROM,Lookatthepicturesandusesomeadjectivestodescribeher/hisfeelings.,Free!Easy!Fast!Quick!,Usefulphrases,calculatingmachineAnalyticalmachinecardwithholestechnologicalrevolutionuniversalmachineartificialintelligencegobybyinternethumanrace,计算器分析机穿孔卡技术革命万能机,通用机器人工智能走过，过去通过网络人类,otherusefulwordsandexpressionsaboutcomputer,Network网络Website站点Program程序Virus病毒Hacker黑客Download下载Software软件Hardware硬件,Upload上传Homepage主页Password密码Desktop桌面Username用户名Click点击,Whatsthemainideaofthispassage?A.ThedevelopmentofcomputersB.ThedevelopmentanduseofcomputersC.Amachinewhichissimple-mindedD.Computersmayreplacehumanbeing,Fast-reading,B.Thedevelopmentanduseofcomputers,()IbeganasacalculatingmachineinJapanin1642.()In1936,Igrewrapidlybothinsizeandinbrainpower.()Astimewentby,Iwasmadebigger.()Sincethe1970smanynewapplicationshavebeenfoundforme.,2.TrueorFalse,F,T,F,T,Thecomputerbeganasacalculatingmachine.,1936,Thecomputerhadgrownaslargeasaroom.,1960,Computerswereusedinofficesandhomes.,3.Table-filling,A.Readthepassagecarefullyandfindthetopicsentencesandthedetailssupportingthem.,Further-reading,OvertimeIhavebeenchangedquitealot,Thesechangesonlybecomepossibleasmymemoryimproved,Sincethe1970smanynewapplicationshavebeenfoundforme,calculatingmachineanalyticalmachineuniversalmachinepclaptop,tubestransistorschipsnetworkworldwideweb,communicationsfinancetraderobotsmobilephonesmedicaloperationsspacerocketsprovidingalifeofhighquality,Nowwearetoreadthetextonceagainandunderlinealltheexpressionsinthetext.Putthemdownintoyournotebookafterclassashomework.,B.Readaloudandunderlineexpressions,I,the_,wasacalculatingmachinein1642in_.In1936,Ibecamea“_machine”to_anymathematicalproblem.Sincethe1970sIhavebeenusedfirstasa_andthenasa_inofficeand_.Manychangedhavehappenedtomy_,somy_totallychanged.Ihavebeenw