高中英语人教版必修二Unit3Reading课件

Welcome,1.Iamamachinewhichisagoodhelperindoinghousework.Iwashclothesforpeople.WhoamI?,washingmachine,2.Amachinethatyouusetotalktootherpeopleeveninafar-awayplace.Weareconnectedbywireorradio.Noweachofusoftenhasanumber.WhoamI?,telephone,Guessing,3.Iamamachine,whichyoucanusetoplaygames,watchmovies,listentomusic,communicatewithyourfriends,gatherinformationWhoamI?,Acomputer,unit3computers,Nowadayscomputersplayaveryimportantroleinourdailylife.,Whatdoyouknowaboutcomputers?,keyboard键盘,mouse鼠标,monitor显示器,screen屏幕,speaker音响,mainframe主机,WhatEnglishwordsdoyouknowaboutcomputers?,“whoamI?”,quiz,Newwordsandexpression,数学的计算器信息技术个人电脑依.看,据.认为优点缺点算盘掌上电脑,.,InformationTechnology,PersonalComputer,advantagedisadvantageabacuspalmtop,Inonesopinion,Mathematical,Calculator(n.),IntelligenceAnalyticalmachineUniversalmachineTransistorArtificialintelligenceTechnologicalrevolutionfunction,智力分析机通用机晶体管人工智能科技革命功能,NewWordsandExpressions,Listentothetapeandanswerthesequestions.,Task1:Skimming,1.Whoisthespeakerinthisstory?,3.Whatsthemainideaofthispassage?A.Thedevelopmentofcomputers.B.Thedevelopmentanduseofcomputers.C.Amachinewhichissimple-minded.D.Computersmayreplacehumanbeings.,Itisacomputer.,2.wecanknowthatthetextiswritteninanorderof_,time,Thesechangesonlybecamepossibleasmymemoryimproved.Sincethe1970smanynewapplicationshavebeenfoundforme.OvertimeIhavebeenchangedquitealot.,Para1:,Para2:,Para3:,4.Matchthemainideasandtheparagraphs.,Task2Carefulreading,timeline,1642:1822:1936:1940s:1960s:1970s:Now:,Thecomputerbeganasacalculatingmachine.,theAnalyticalMachinewasbuiltbyCharlesBabbage.,Thecomputergrewrapidlybothinsizeandinbrainpower.,Computerhadgrownaslargeasaroom.,Computerswereusedinofficersandhomes.,Computersconnectpeopleallovertheworldtogether.,Thefirstfamilyofcomputerswasconnectedtoeachother.,VS,TrueorFalse,AlanTuringbuiltanAnalyticalMachinetosolveanymathematicalproblems.Peoplebegantorealizethatthecomputergotclevererandquickerwithtimepassing.Thecomputerbegantoservethehumanracesinceitwasbroughtintopeopleshomes.Sincethe1970s,thecomputerwasusedbypeoplearoundtheworldthroughtheInternet.5.Thelargerthecomputeris,themorememoryithas.,F,T,F,T,F,auniversalmachine,itsbirth,IbecamesmallandthinbutIgotclevererandcleverer,quickerandquicker.AndmymemorybecamesolargethatIcouldntbelieveit!,correctthewrongsentences,Letsdosummary,Task3:,Fillintheblanks:Ibeganasa_in1642inFrance.In1822Iwasbuiltasan_.Thenin1936AlanTuringwroteabookandbuilta_.Astheyearshave_,Ihavebeenmade_butIgot_,_.Inthe1960stheygavemeafamily_.NowpeoplecallittheInternet.Iwas_inthe1970s.SoIbecamePC.SincemybirthIhavetrulybeenbuilttoservethehumanrace.,calculatingmachine,AnalyticalMachine,universalmachine,goneby,smallerandsmaller,clevererandcleverer,quickerandquicker,connectedbyanetwork,broughtintopeopleshomes,Whataretheadvantagesanddisadvantagesofthecomputers?Inmyopinion,Icanusethecomputerto.,Discussion,Task4Post-reading,AdvantagesWecanusethecompuersto1.useacomputerforschoolwork2.playgamesonthecomputer3.sendemailstofriends4.downloadmusicandfilms5.goshoppingonline6.useQQmunicatewithothers,8.usetheInternettosearchforinformation9.surfthewebforfun10.readnewsbothathomeandabroad,readbooksandmagazines,DisadvantagesSomestudentsmaygettooaddicted(沉溺于)toit.Somestudentswastetoomuchtimeinplayingcomputergames.Somestudentsspendtoomuchtimeinchattingwithothersandmaybecheated(欺骗)bysomeoneonline.Asaresult,theyhavelittletimetostudyItisbadforoureyesandhealthtospendlongtimeinfrontofcomputers.,ConclusionThereisnodoubtthatcomputerhastwosides,too.Ifwemakegooduseofit,itwillmakeourlivesmorecolorfulandconvenient.Butdontloseyourselfinplayingcomputer