新人教版高中英语必修2 Unit3 Computers Reading PPT课件.ppt

Unit3,Computers,Warmingupandreading,LookatthefollowingpicturesandsaytheirEnglishnames.,abacus,calculator,hugecomputer,PC(personalcomputer),laptop,PDA(personaldigitalassistant),Whatdoyouthinkthefuturecomputerdevelopmentwillbe?,robot,IthinkthatInmyopinionIbelievethatWhatsyourreason?Whydoyouthinkso?,1.Theycanbeusedforcalculating.2.Theycandealwithmathsproblems.3.Theyareourfriends.4.Theyareusefulandhelpful.,Whatdotheyhaveincommon?,keyboard,mouse,monitor,screen,speaker,hostcomputer,WhatEnglishwordsdoyouknowaboutacomputer?,Whatcancomputersbeusedtodoindailylife?,Discussion,HowdoyouusecomputersandtheInternet?,Yes,No,Ioftenuseacomputerto.IsometimesuseittoandIneveruseitto,or,Debate,Iscomputersgoodorbadforhumanbeings?,For,havegreatpower;makeourlivesmorecolorfulandmoreconvenient;,Against,makepeoplelazy;unhealthyinformation;pollutetheenvironment;,Readandanswerthequestions.,1.Whoisthespeakerinthisstory?2.Writedownthreesentencesfromthestorytosupportyouridea.,1.Whoisthespeakerinthisstory?Acomputer.2.Writedownthreesentencesfromthestorytosupportyouridea.1)IwasbuiltasanAnalyticalmachinebyCharlesBabbage.,2)Myrealfather,AlanTuring,3)Iwasalwayslonelystandingtherebymyself,untilinearly1960stheygavemeafamilyconnectedbyanetwork.,Listenagainandanswerthequestions.,1.Wherewasthespeakerbornin1642?InFrance.2.Whathappenedtothespeakerafternearlytwohundredyears?HewasbuiltasanAnalyticalMachinebyBabbage.3.Whatwasthespeakercalledin1936?Auniversalmachine.4.Whathappenedtothespeakerinthe1970s?Hewasusedinofficesandhomes.,Findthewordorexpressionforeachofthefollowingmeaningsfromthetext.,completechangeinwaysofthinking,working,etc,revolution,connectedcomputersystem,network,tomakethingseasier,tofindtheanswerusingnumbers,asaresult,simplify,calculate,so;therefore,canbemovedeasilyfromplacetoplace,mobile,toworkouttheanswertoaproblem,solve,onesaimorpurpose,goal,totravelaroundanareatofindoutaboutit,explore,completely,totally,anyway,anyhow,finance,activityofmanagingmoney,In1642Ibeganasacalculatingmachineandcouldsolveanymathematicalproblem.MyrealfatherwasCharlesBabbage,whowroteabookandbuildmein1936.AfterIgotmynewtransistorsinthe1960s,Ibecamesmallerbutclevererandquicker.Iwasbroughtintopeopleshomesinthe1970s.SincemybirthIhavebeenbuilttotaketheplaceofhumanrace.,F,F,T,T,F,Checkthesentencesaretrueorfalse.,Thecomputerbeganasacalculatingmachine,Thecomputergrewrapidlybothinsizeandinbrainpower.,Readthetextcarefullyandfillinthetables.,Computershadgrownaslargeasaroom.,1960s,Computerswereusedinofficesandhomes.,Computersconnectpeopleallovertheworldtogether.,calculating,analytical,universal,mathematicalproblems,Medicaloperations,Memory,Transistors,Applications,Communication,Trade,OvertimeIhavebeenchangedquitealot.,Thesechangesonlybecamepossibleasmymemoryimproved,Sincethe1970smanynewapplicationshavebeenfoundforme.,Completethechartbelow.,CalculatingmachineAnalyticalmachineUniversalmachinePClaptop,TubesTransistorsChipsNetworkWorldwideweb,CommunicationsFinanceTradeRobotsMobilephonesMedicaloperationsSpacerocketsProvidingalifeofhighquality,Discussion,Isitveryimportanttolearncomputerskillsforus?Whyorwhynot?,Usethefollowingexpressioninyourdiscussion.IthinkthatInmyopinionIbelievethatWhatsyourreason?Whydoyouthinkso?,Retellthetextaccordingtothefollowingcluesandthenwritedownyourretelling.,Homework,Changesofthemachine