新课标高中英语人教版必修二第三单元阅读课件unit3-computers

015432Welcometoourclass!Welcometoourclass!First,let’splayagame!Withthedevelopmentofscienceandtechnology,manynewthingsappearinhumanbeing’slife.Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tlikemenow.DoyouknowwhoIam?abacusIamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?calculatorIamverybig.Scientistsusemetosolvesomemathematicalproblems.DoyouknowwhoIam?hugecomputerPCPersonalComputerI’masmall,relativelyinexpensivecomputerdesignedforanindividualuser.I’mbasedonthemicroprocessortechnology.Athome,peopleusemetosurftheInternetandplaygames.DoyouknowwhoIam?Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.DoyouknowwhoIam?notebookcomputer/laptopPDAPersonalDigitalAssistantIamsosmallinsizethatIcanfitinyourhand.Iusuallyhaveasmallscreenusuallybiggerthanadigitalphone,howeversmallerthanthesmallestlaptop,I’magreatwaytostoretelephonenumbers,accesstheinternet,makecalculations,andsoon.DoyouknowwhoIam?robotI’mamachinethatworksautomatically.Icandoawidevarietyoftasks,especiallysuitablefordoingjobstooboring,difficult,ordangerousforhumanbeings.DoyouknowwhoIam?PDAabacuscalculatorhugecomputerPClaptopWhat’snext?Canyoutelltheorderoftheseinventions?robotrobotWhataboutinthefuture?Unit3ComputersWecanusethecomputerto…listentomusicwatchmoviessearchfor…communicatewith…doshoppingReadingpersonrealhappytechnologysimpletechnologicalsimplifypersonalrealityhappiness词根start1.Whoisthespeaker?Itisacomputer.2.Inwhichorderisthetextwritten?AccordingtothetimeChoosethebestanswerWhat’sthemainideaofthetext?A.Thecomputerwantstofind“whoheis”.B.Thefunctionalchangeofthecomputer.C.Thecomputerbecomespopulararoundtheworld.D.Thehistoryofthecomputer.startReadingtogetdetailedinformationP19Timeline1642:________________________________________1822:TheAnalyticalMachinewasmadebyCharlesBabbage.1936:____________________________________________________________1940s:_____________________________________________thefirstfamilyofcomputersconnectedtoeachother.1970s:_______________________________________Now:_____________________________________________Thecomputerbeganasacalculatingmachine.Thecomputergrewrapidlybothinsizeandinbrainpower.Computersservehumansasadevotedfriendandhelper.1960s:Computerswereusedinofficesandhomes.Thecomputerhadgrownaslargeasaroom.comprehendingMoredetailedinformationabouteachparagraphReadingParagraph1Paragraph2Paragraph3TopicsentenceSupport-ingdetailsOvertimeIhavebeenchangedalot.Thesechangesonlybecamepossibleasmymemoryimproved.Sincethe1970smanynewapplicationshavebeenfoundforme.●●●●●●●●●●●●●●●calculatingmachineanalyticalmachineuniversalmachinePClaptoptubestransistorschipsnetworkWorldWideWebcommunicationsfinancetraderobotsmobilephonesoperationsspacerockets●●TrueorFalse1.AlanTuringbuiltanAnalyticalMachinetosolveanymathematicalproblems.2.Peoplebegantorealizethatthecomputergotclevererandquickerwithtimepassing.3.Thecomputerbegantoservethehumanracesinceitwasbroughtintopeople’shomes.4.Sincethe1960s,thecomputerwasusedbypeoplearoundtheworldthroughtheInternet.5.Thelargerthecomputeris,themorememoryithas.FTFTFauniversalmachineitsbirthIbecamesmaller,butIgotclevererandquicker.AndmymemorybecamesolargethatevenIcouldn’tbelieveit!1.Howoldisthecomputer?A.75B.370C.112D.2342.Whendid“I”notfeellonely?A.1940sB.1970sC.1980sD.1960s3.Whatfunctionisnotmentionedinthetext?A.spaceresearchB.medicaloperationC.militarilyD.communication4.Whatcanyouinferfromthetext?A.Thecomputerhasartificialintelligence.B.Thecomputerchangesalotovertheyears.C.Thecomputerwasnotconnectedbyanetworkuntilintheearly1960s.D.Nowthecomputercanonlybeusedtodealwithinformation.ReadingSummaryofthetextIwasbornasa_________machinein1642.WhenIwasyoung,Iwasgoodat_________difficultsums.About200yearshadpassedbeforeIcouldthink______andproduce______answers.Atthattime,Iwascalledan________machine.In1936,Iwasbuiltasa________machine.Ihadtheabilitycalculatingsimplifyinglogicallyquickeranalyticaluniversalto____anymathematicalproblem.Fromthenon,Igrewrapidlybothin___andmemory.AfterIstoredmymemoryon____insteadofin_________Ibecame_______insizebut_______inintelligence.Astimewentby,Ibecameevensmaller,forIputmymemoryonaverysmall______,whichmademebecomePCandlaptop.solvesizetubessmallerclevererchiptransistorsIthe1960s,Icouldbeconnectedwithothercomputersbya_______.Fromthenon,Iwasabletosharemyknowledgewithothersthroughthe______________.Afterthat,Ihadmanynew___________.Now,Iamgladtoservehumanbeingsasa____________andapleasant______.networkapplicationsdevotedhelperWorldWideWebfriendHomework:1.Findoutthesentencesthatyoudon’tknowinthetext.2.Findoutmorewordswhichhavethesamerootsintheunit.Well-done!Whataretheadvantagesanddisadvantagesofthecomputers?Inmyopinion,Icanusethecomputerto….DiscussionAdvantagesWecanusethecomputersto…1.useacomputerforschoolwork2.playgamesonthecomputer3.sendemailstofriends4.seefilmsandlistentot