新课标高一英语必修2unit3课件.ppt

Unit3ComputersWhoAmI?,Guessinggame,Withthedevelopmentofscienceandtechnology,manynewthingsappearinhumanbeingslife.,Letsguesswhattheyare:,1.Withmeyoucanwatchdifferentprogrammesjustathome.Imamachinethathasascreenwithmovingpicturesandsounds.Butwatchingmetoomuchisbadforyoureyes.,TVset,WhoAmI,2.Iamamachinewhichmovesveryfastonfourwheels.Youneedalicense(执照)andmustbeverycarefulwhenyoudriveme.RollsRoyce,BenzandBMWaresomefamouskindsofme.,car,3.Iamamachinewhichisagoodhelperindoinghousework.Iwashclothesforpeople.WhoamI?,washingmachine,4.Amachinethatyouusetotalktootherpeopleeveninafar-awayplace.Weareconnectedbywireorradio.Noweachofusoftenhasanumber.WhoamI?,telephone,5.Itisamachine,whichyoucanusetotypeyourhomework,drawpictures,playgames,watchmovies,listentomusic,communicatewithyourfriends,gatherinformation,Computer,itisakindofcomputerwhichcanbetakenconvenientlylikeanotebook.,Anotebookcomputer,Discussing:,whattheyhaveincommon?,whattheyhaveincommon?,WhatEnglishwordsdoyouknowaboutcomputers?,WhatisitinEnglish?,mouse鼠标,WhatisitinEnglish?,CPU(centralprocessingUnit)中央处理器,WhatisitinEnglish?,Mainboard(主板),WhatisitinEnglish?,display,computer,I,nternet,S,earch,K,eyboard,C,lick,E-,mail,B,log,BG,illates,E-,pal,Componentsofacomputer,Scanner,Printer,Monitor,FloppyDisk,Mouse,Speaker,Whatcancomputersbeusedtodo?,HowdoyouusecomputersandtheInternet?,Yes,No,Ioftenuseacomputerto,Isometimesuseitto,andIneveruseitto,Computershavegreatpower.Theymakeourlivesmorecolorfulandmoreconvenient.BUTDontjustusecomputersforfun.Dontspendtoomuchtimeinplayingcomputergamesorchatting(聊天)online.Weshouldlearnmorecomputerskillswhichareveryusefulinourfuturework.,WhoAmI,?,计算机器分析机穿孔卡技术革命通用机器数学问题人工智能晶体管存储容量网络万维网,calculatingmachineAnalyticalMachinecardwithholestechnologicalrevolutionuniversalmachinemathematicalproblemsartificialintelligencetransistormemorynetworkWorldWideWeb,Newwordsandexpressions,Listentothetextandfillintheblanks:Ibeganasa_machinein1642inFrance.In1822Iwasbuiltasan_machine.Thenin1936AlanTuringwroteabookandbuilta_machine.Astheyearshave_,Ihavebeenmade_.Thereweretimeswhenmysize_changed.Andmymemorybecame_large_Icouldntbelieveit.Inthe1960stheygavemeafamily_byanetwork.Iwasableto_withothersthroughtheWorldWideWeb.Sincethe1970smanynewapplications_forme.,calculating,Analytical,universal,goneby,smaller,totally,that,connected,havebeenfound,sharemyknowledge,so,1.Wherewereyouin1642?,2.Whathappenedtoyouin1822?,3.Whatwereyoucalledin1936?,4.Whatdidyougetin1960s?,5.Whathappenedtoyouin1970s?,Interview,ChooseonestudentasMr./MissComputer,andtheotherstudentsasreporters.,Thereportersmayaskthefollowingquestions:,Someotherquestionswillbebetter.,Shouldhighschoolstudentssurftheinternet(上网)?,Ithinkwehighschoolstudentsshouldsurftheinternetbecause(first,second,third),Idontagreewithyou.Inmyopinion,itisbadforstudentstoThereasonisthat,Iagreewithyou.Ithinkwecanalso,Haveadebate,辩论,Timeline,Thecomputerbeganasacalculatingmachine,Thecomputergrewrapidlybothinsizeandinbrainpower.,Thecomputerhadgrownaslargeasaroom.,1960s,Computerswereusedinofficesandhomes.,Computersconnectpeopleallovertheworldtogether.,1642:_1822:TheAnalyticalMachinewasmadebyCharlesBabbage.1936:_1940s:_:Thefirstfamilyofcomputerswasconnectedtoeachother.1970s:_Now:_,Detailed-reading,OvertimeIhavebeenchangedquitealot.,CalculatingmachineAnalyticalmachineUniversalmachinePClaptop,Thesechangesonlybecamepossibleasmymemoryimproved,TubesTransistorsChipsNetworkWorldwideweb,Sincethe1970smanynewapplicationshavebeenfoundforme.,CommunicationsFinanceTradeRobotsMobilephonesMedicaloperationsSpacerocketsProvidingalifeofhighquality,TrueorFalse?In1642Ibeganasacalculatingmachineandcouldsolveanymathematicalproblem.MyrealfatherwasCharlesBabbage,whowroteabookandbuildmein1936.AfterIgotmynewtransistorsinthe1960s,Ibecamesmallerbutclevererandquicker.Iwasbroughtintopeopleshomesinthe1970s.SincemybirthIhavebeenbuilttotaketheplaceofhumanrace.,F,F,T,T,F,Mainidea:Thisisashorthistoryofthe_ofcomputers.,development,calculating,AlanTuring,serve,Onlyc_,Followinginstructionsfromc_,Solvinganym_problem,Havingartificial_,S_erandq_er,C_byanetwork.,Discussinpairsandworkoutthechangesofthecomputerabilities.,alculating,ardswithholes,athematical,intelligence,mall,uick,pplications,onnected,ManynewA_.,Changesofthemachine,Calculatingmachine,Analyticalmachine,Universalmachine,Machinewithartificialintelligence,Machinewithnewtransistor,Afamilyconnectedbyanetwork,AfamilyusedbytheInternet,retell,Discussion,Isitveryimportanttolearncomputerskillsforus?Whyorwhynot?,Usethefollowingexpressioninyourdiscussion.IthinkthatInmyopinionIbelievethatWhatsyourreason?Whydoyouthinkso?,Howmuchdoyouknowaboutacomputer?,GivetheEnglishnameofthefollowingpicturesofthecomputercomponents(组件),Moreknowledge,Scanne