高中英语 Unit 3 Computers课件 新人教版必修 22页

Unit3ComputersPeriod2Reading\nrobot1.rmvb\nEarliestcomputerNowadayscomputerHowdoesitchange?\nWhoamI?\nSkimming:Itisacomputer.1.whoisthespeaker?2.What’sthepassageabout?It’saboutthehistoryofcomputer.\nReadthepassageagain.Findthetopicsentenceofeachparagraphandthesupportingdetails.Paragraph1:OvertimeIhavebeenchangedquitealot.1.calculatingmachine2.analyticalmachine3.universalmachine4.laptopSkimming:\nQ1:HowdidthecomputerworkasanAnalyticalMachine?Thecomputerfollowedinstructionsfromcardswithholes.\nParagraph2:Thesechangesonlybecamepossibleasmymemoryimproved.1.tubes2.transistors3.chips4.network5.WorldWideWeb\nParagraph3:Sincethe1970smanynewapplicationshavebeenfoundforme.1.communications2.finance3.trade4.robots5.mobilephones6.medicaloperations7.spacerockets8.providingalifeofhighquality\n2.Whichsentencecanbereplaced(代替）inthepassagebythefollowing?Later,IbecomesocleverthatIcanremembereverythingyoutoldme.Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold.\nSummaryAtopicsentencesetsoutthemainideaofaparagraph.Atopicsentenceisusuallythefirstorlastsentenceofaparagraph.\n1642TheAnalyticalMachinewasmadebyCharlesBabbage.19361940sThefirstfamilyofcomputerswasconnectedbyanetwork.1970snowTimeThecomputerbeganasacalculatingmachine．1822AlanTuringwroteabooktodescribehowcomputerscouldbemadetoworkandbuilta“universalmachine”．ComputershadnewtransistorsandbecameSmallandthin.1960sComputerswerebroughtintopeople'shomes．Computersconnectpeopleallovertheworldtogether.Whatistheorderofthetext?\nQ3:howdidcomputerchangeinitssize,intelligence,speed,function?Andhowaboutpeople’sopinion?Size:Intelligence:Speed:Function:People’sopinion:smallerquickerclevererdealingwith…,communicatingwith…clever&usefulcalculatingsimple-minded\nTrueorFalseAlanTuringbuiltanAnalyticalMachinetosolveanymathematicalproblems.Peoplebegantorealizethatthecomputergotclevererandquickerwithtimepassing.Thecomputerbegantoservethehumanracesinceitwasbroughtintopeople’shomes.Sincethe1970s,thecomputerwasusedbypeoplearoundtheworldthroughtheInternet.5.Thelargerthecomputeris,themorememoryithas.FTFTFauniversalmachineitsbirthIbecamesmallandthinbutIgotclevererandcleverer,quickerandquicker.AndmymemorybecamesolargethatIcouldn’tbelieveit!correctthewrongsentences\nFillintheblanks:Ibeganasa_______________in1642inFrance.In1822Iwasbuiltasan___________.Thenin1936AlanTuringwroteabookandbuilta_____________.Astheyearshave______,Ihavebeenmade__________butIgot___________,__________.Inthe1960stheygavemeafamily_____________.NowpeoplecallittheInternet.Iwas________________inthe1970s.SoIbecamePC.SincemybirthIhavetrulybeenbuilttoservethehumanrace.calculatingmachineAnalyticalMachineuniversalmachinegonebysmallerandsmallerclevererandclevererquickerandquickerconnectedbyanetworkbroughtintopeople’shomes\nForSurfingonlineisharmfultotheyoungAgainstdebate\nForSurfingonlineisharmfultotheyoungHavebadeffectonstudyAwasteofmoneyAwasteoftime\nAgainstSurfingonlineisgoodtotheyoungLearnCommunicateEntertainmentImprove\nadvantageswecancommunicatewithfriendslistentothemusicseefilms&watchnewsplaygamesdoshoppingsavealotoftimedoalotofusefulthingsDisadvantagesSomepeopleespeciallytheteenagersabandon(沉迷于)themselvestothecomputergamesandchattingontheInternet.Asaresult,theyhavelittletimetostudy.Somepeopleusethecomputerwrongly\nThereisnodoubtthatcomputerhastwosides,too.Ifwemakegooduseofit,itwillmakeourlivesmorecolorfulandconvenient.Butdon’tloseyourselfinplayingcomputers.Justremember:Keepfit,studywellandworkhard.\nAlanTuringcalculatingmachinePC(desktop/notebook)analyticalmachineuniversalmachineartificialintelligenceInternetcompletingthechartbelow.CharlesBabbageThe“father”(inventor)Thehistoryofcomputer\nSupposeyouareareporter.NowyouareinterviewingMr./MissComputer.Samplequestions:Whatdoyouliketoeat?Whatareyourhobbies?Whatisyournewestfunction(功能)?Canyousaysomethingaboutyourfutureplan?etc.……Role-play