人教版高一英语必修2所有精华版课件ppt

Unit3ComputersReadingWHOAMI?Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tlikemenow.DoyouknowwhoIam?abacusRiddles(谜语):Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?calculatorRiddles(谜语):Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.notebookcomputerDoyouknowwhoIam?Riddles(谜语):DiscussionWhatdotheyhaveincommon?Ithinkthat…Inmyopinion…Ibelievethat…Whydoyouthinkso?What’syourreason?Ithinktheyallcancalculatesomething.Itcandealwithsomemathsproblems.Ibelievethattheyareourgoodfriends.Inoureverydaylife.Wecannotfinishourworkquicklywithoutthem.Inmyopinion,peopleimproveabacus,makeitmoreusefulandmakeitacomputer.Theyarebeingusedwidelyandconvenientlyintheworld.HavethecomputerandInternetbecomepartofyourlife?Whatcanyouusethemtodo?THINKINGIusethecomputerorInternetto:typemyhomeworkdrawpicturesplaygamescommunicatewithmyfriends.gatherrelatedinformationformylessonsbuythethingsIlike,egbooksandclothes.listentomusicwatchmovies.Howmuchdoyouknowaboutacomputer???GivetheEnglishnameofthefollowingpicturesofthecomputercomponents(组件)WhatisitinEnglish??Mainboard(主板)WhatisitinEnglish??CPU(centralprocessingUnit)中央处理器WhatisitinEnglish??harddiscWhatisitinEnglish??floppydiscWhatisitinEnglish??Keyboard(键盘)WhatisitinEnglish??monitorscreenWhatisitinEnglish??mouse鼠标DVDROMDigitalVersatileDiscReadOnlyMemory数字通用光盘WhatisitinEnglish??WhatisitinEnglish??PrinterWhatisitinEnglish??Modem（调制解调器）Completethesentenceswithsomeofthewordsinthebox.Monitor,mouse,keyboard,harddisc,floppydisc,CD-ROM,printer,modem1A_________isusedtoseeyourdataonacomputer.2A__________ordiskisthemaindevicethatacomputerusestostoreinformation.3A_________isamachineforprintingtextorpicturesontopaper,especiallyoneconnectedtothecomputer.monitorharddiskprinterMonitor,mouse,keyboard,harddisc,floppydisc,CD-ROM,printer,modemA_________isusedtoputdataintoacomputer.A_________isoftenusedtoconnectcomputerstoeachotherthoughphonelines.Datacanalsobestoredina______________,whichissmallandcanbecarriedeasily.A___________isadiscthatcontainscomputerdata.Itcanstorealargeamountofdata.keyboardmodemfloppydiscCD-ROMLookatthepicturesandusesomeadjectivestodescribeher/hisfeelings.Free!Easy!Fast!Quick!UsefulphrasescalculatingmachineAnalyticalmachinecardwithholestechnologicalrevolutionuniversalmachineartificialintelligencegobybyinternethumanrace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otherusefulwordsandexpressionsaboutcomputerNetwork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1.What’sthemainideaofthispassage?A.ThedevelopmentofcomputersB.ThedevelopmentanduseofcomputersC.Amachinewhichissimple-mindedD.ComputersmayreplacehumanbeingFast-readingB.Thedevelopmentanduseofcomputers()①IbeganasacalculatingmachineinJapanin1642.()②In1936,Igrewrapidlybothinsizeandinbrainpower.()③Astimewentby,Iwasmadebigger.()④Sincethe1970smanynewapplicationshavebeenfoundforme.2.TrueorFalseFTFTTimeEvents16421822TheanalyticalmachinewasmadebyCharlesBabbage.Thecomputergrewrapidlybothinsizeandinbrainpower.1940sThefirstfamilyofcomputerswasconnectedtoeachother.1970snowComputersconnectpeopleallovertheworldtogether.Thecomputerbeganasacalculatingmachine.1936Thecomputerhadgrownaslargeasaroom.1960Computerswereusedinofficesandhomes.3.Table-fillingA.Readthepassagecarefullyandfindthetopicsentencesandthedetailssupportingthem.Further-readingParagraph1Paragraph2Paragraph3TopicsentenceSupportingdetailsOvertimeIhavebeenchangedquitealotThesechangesonlybecomepossibleasmymemoryimprovedSincethe1970smanynewapplicationshavebeenfoundforme•calculatingmachine•analyticalmachine•universalmachine•pc•laptop•tubes•transistors•chips•network•worldwideweb•communications•finance•trade•robots•mobilephones•medicaloperations•spacerockets•providingalifeofhighqualityNowwearetoreadthetextonceagainandunderlinealltheexpressionsinthetext.Putthemdownintoyournotebookafterclassashomework.B.ReadaloudandunderlineexpressionsI,the_________,wasacalculatingmachinein1642in__.In1936,Ibecamea“_________machine”to_____anymathematicalproblem.Sincethe1970sIhavebeenusedfirstasa___andthenasa_______inofficeand______.Manychangedhavehappenedtomy____,somy_______totallychanged.Ihavebeenwidelyusedinmanyfields,Ihavealsobeenputintorobotsto_______theMoonandMars.computerFranceuniversalsolvePClaptophomessizeshapeexploreC.FillintheblanksRetellingRetellthetextaccordingtothetime-table.ThankYou!!!!