人教版新课标高中英语必修2unit3

GuessingDoyouknowwhoIam?warmingupIamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tusemeoftennow.DoyouknowwhoIam?abacusIamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.WhoamI?calculator计算器Iamverybig.Scientistsusemetosolvesomemathematicalproblems.DoyouknowwhoIam?hugecomputer巨型计算机Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.DoyouknowwhoIam?notebookcomputer(laptop)笔记本电脑Whatdotheyhaveincommon?1.Theycanbeusedforcalculating.2.Theycandealwithmathsproblems.3.Theyareusefulandhelpful.robotartificialintelligenceNowadayscomputersplayaveryimportantroleinourdailylife.Doyouknowaboutcomputers？keyboard键盘mouse鼠标monitor显示器screen屏幕speaker音响host主机ComponentsofaComputerLookatthesepicturesandguesswhattheyare.acalculatingmachineanalyticalmachineuniversalmachinesolvedifficultmathematicalproblemscomputeraslargeasaroomLookattheseinventions.Canyouputtheminanorderaccordingtothetimewhentheyappeared?Afterreadingthepassage,checktoseeifyouareright.()analyticalmachine()laptop()calculatingmachine()robot()PC()universalmachineReadingWHOAMI?SkimmingtogetgeneralideasWhile-reading(1)1.Whoisthespeaker–“I”—inthisstory?“I”ama__________.2.What’sthemainideaofthispassage?A.Thedevelopmentofcomputers.B.Thedevelopmentanduseofcomputers.C.Amachinewhichissimple-minded.D.Computersmayreplacehumanbeings.computer3.Thetextiswritteninanorderof_____.timeWhile-reading(1):skimmingScanningtogetdetailedinformationWhile-reading(2-3)careful-readingtimeline1642:1822:1936:1940s:1960s:1970s:Thecomputerbeganasacalculatingmachine.TheAnalyticalMachinewasbuiltbyCharlesBabbage.Thecomputergrewrapidlybothinsizeandinbrainpower.Computerhadgrownaslargeasaroom.Computerswereusedinofficesandhomes.Thefirstfamilyofcomputerswasconnectedbyanetwork.Manynewapplicationshavebeenfoundforcomputers.Now:Computersconnectpeopleallovertheworldtogether.While-reading(2):scanning(Universalmachine)Lookattheseinventions.Canyouputtheminanorderaccordingtothetimewhentheyappeared?Afterreadingthepassage,checktoseeifyouareright.()analyticalmachine()laptop()calculatingmachine()robot()PC()universalmachine123456PDAabacuscalculatorhugecomputerPClaptopWhat’snext?robotThehistoryofcomputersPara.1TopicSentenceSupportingdetails▪▪▪▪▪TopicSentenceWhile-reading(3):carefulreadingReadthepassageagaincarefullyandfinishEx.2onP19inthestudentbook.OvertimeIhavebeenchangedquitealot.calculatingmachineanalyticalmachineuniversalmachinePClaptop1.WhycouldI“think”logicallyandproduceananswerquickerthananyperson?BecauseIwasprogrammedbyanoperatorwhousedcardswithholes.While-reading(3):Para.2TopicsentenceSupportingdetails▪▪▪▪▪ThosechangesonlybecamepossibleasmymemoryimprovedtubestransistorschipsnetworkWorldWideWeb2.Itotallychangedmyshape,becausemymemorywasfirststoredintubes,thenontransistorsandlateronverysmallchips.Itotallychangedmyshape！While-reading(3):Para.3TopicsentenceSupportingdetails▪▪▪▪▪▪▪▪Sincethe1970smanynewapplicationshavebeenfoundforme.communicationsfinancetraderobotsmobilephonesmedicaloperationsspacerocketsprovidealifeofhighquality3.Manynewapplicationshavebeenfoundforme,suchascommunicationsfinance/trade/robots/mobileRockets.phones/medicaloperations/space4.(translation)Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold.随着时间的推移，我的记忆力发展的如此之快，就像一头大象，我从来不会忘记告诉我的任何事情。While-reading(3):1.MyrealfatherwasCharlesBabbage,whowroteabookandbuiltmein1936.2.AfterIgotmynewtransistorsinthe1960s,Ibecamesmallerbutclevererandquicker.3.Iwasbroughtintopeople’shomesinthe1970s.4.SincemybirthIhavebeenbuilttotaketheplaceofthehumanrace.TrueorFalseQuiz15.IbeganasacalculatingmachineinJapanin1642.6.In1936,Igrewrapidlybothinsizeandinbrainpower.7.Astimewentby,Iwasmadebigger.8.Sincethe1970smanynewapplicationshavebeenfoundforme.1.Whowasthefirstpersontomaketheearliestcomputer?A.AlanTuring.B.CharlesBabbage.C.CharlesTuring.D.AlanBabbage.2.Whenwasthe“universalmachine”built?A.In1822.B.In1642.C.In1936.D.In1970.Quiz23.Whenwasthecomputerthebiggest?A.In1642.B.In1936.C.Inthe1940s.D.Inthe1970s.4.Howoldisthecomputer?A.About170yearsold.B.About270yearsold.C.About370yearsoldD.About470yearsold.5.Whichofthefollowingisintherightorderoftime?a.Thecomputerwasconnectedwithothercomputers.b.AlanTuringwroteabookaboutthecomputer.c.ThecomputerhasbeensenttoexploretheMoonandMars.d.Thecomputerbegantosimplifydifficultsums.A.a.b.c.d.B.b.c.a.d.C.d.a.c.b.D.d.b.a.c.SummaryofthereadingtextIbeganasa__________________in1642inFrance.In1822Iwasbuiltasan_________________.Thenin1936AlanTuringwroteabookandbuilta________________.Astheyearshavegoneby,Ihavebeenmade_______and________butIbecame_________and_________.calculatingmachineanalyticalmachinemachineuniversalsmallersmallerclevererquickerInthe______theygavemeafamilyconnectedbya________.NowpeoplecallittheInternet.Ihavebeenusedin______and______sincethe1970s.SoIbecamePC.Sincemy_____Ihavetrulybeenbuilt