UNIT 3 COMPUTERS 公开课

WhatisitinEnglish?abacuscalculatorhugecomputerPC(personalcomputer)laptopPDA(personaldigitalassistant)robotrobotsrobotrobotWhatarethey?wateringplayingworkingWhatistherobotdoing?What'sthenextdevelopmentofcomputers?PDAabacuscalculatorhugecomputerPClaptopWhat’snext?Alltheinventionstellusthe___________ofcomputers.robotdevelopmentPuttheminanorderaccordingtothetimewhentheyappeared.()universalmachine()laptop()calculatingmachine()robot()PC()analyticalmachineWhoamI?LookatthepicturesandthetitleofthereadingpassageonPage18andpredictwhatitisgoingtobeabout.___________________________________Itisaboutcomputers.Fastreading:1.WhoamI?Acomputer.2.Listthekeywordsfromthepassagetosupportyouridea.calculatingmachine(L2)analyticalmachine(L5)universalmachine(L13)PCandlaptop(L16)Puttheminanorderaccordingtothetimewhentheyappeared.()universalmachine()laptop()calculatingmachine()robot()PC()analyticalmachine123456Thepassagemainlytellsusashorthistoryofthedevelopmentofthe_________andits___________indifferentfields.computerapplicationsThecomputerhadgrownaslargeasaroom.TheanalyticalmachinewasmadebyCharlesBabbage.Thecomputergrewrapidlybothinsizeandinbrainpower.1642182219361940sThecomputerbeganasacalculatingmachine.1960sThefirstfamilyofcomputerswasconnectedtoeachother.1970sComputerswereusedinofficesandhomes.NowComputers_________peopleallovertheworldtogether.connectFromthetimelineabove,wecanknowthatthepassageiswritteninanorderof___________.timeParaⅠ:OvertimeIhavebeenchangedquitealot.(CharlesBabbage)analyticalmachine(simplifydifficultsums)(solveanydifficultmathematicalproblem)(personalcomputer)calculatingmachineuniversalmachinePClaptop(AlanTuring)Thesechangesonlybecamepossibleasmymemoryimproved.memory(存储量)storedin:tubestransistorssmallchipsnetworkWhataboutmyshape?WorldWideWebParaII:communicationspacerocketsfinancetrademedicaloperationsrobotsmobilephonesSincethe1970s,manynewapplicationshavebeenfoundforme.ParaIII:1.Atopicsentencetellsus______________ofaparagraph.2.Atopicsentenceisusuallythe____or_____sentenceofaparagraph.Topicsentencesthemainideafirstlast:Thesechangesonlybecamepossibleasmymemoryimproved.OvertimeIhavebeenchangedquitealot.ParaⅠ:Sincethe1970s,manynewapplicationshavebeenfoundforme.ParaIII:changesParaIImemoryapplicationsfunction:poorstrongsmalllargenarrowwidesizelargesmallLearningmaterialP3Step2.Carefulreading2)Choosethebestanswersaccordingtothetext.()(1)Asacalculatingmachine,IA.workedveryslowlyB.couldsimplifydifficultproblemsC.developedveryfastD.waswidelyusedallovertheworldB()(2)Wherewasmymemorystoredatfirst?A.Inboxes.B.Ontransistors.C.Onsmallchips.D.Intubes.()(3)Likeanelephant,I.A.amverylargeB.amverystrongC.haveverygoodmemoriesD.standtherebymyselfDCWhatcanwedoontheInternet?listentomusicreadbooksandmagazinesseemoviessearchforinformationdownloadmusicandfilmssendemailsgoshoppingonlineplaycomputergamescommunicatewithothersbyQQDiscussthedisadvantagesofcomputers.1.Someyoungpeopleareeasilyaddictedtogames.2.Usingcomputerstoolongisbadforoureyesandhealth.3.Theyoungwillpaylessattentiontohandwriting.4.Theyoungtendtobecheated.5.Thereisunhealthyinformationonthenet.6.Youmayloseyourprivateinformation.Howtoavoidthedisadvantagesandmakegooduseofacomputer?1.Donottellothersyourprivateinformation.(telephonenumberandaddress)2.Donotvisitsomeunsafewebsites.3.Donotdownloadsomeunknownfiles.4.Donotusecomputersjustforfun.5.Donotspendtoomuchtimesurfingontheinternet.Difficultsentences(1)原句：IdevelopedveryslowlyandittooknearlytwoyearsbeforeIwasbuiltasananalyticalmachinebyCharlesBabbage.分析：beforeconj.在......之前，……之后才……，还没来得及……就……。在此句中可译为：________________________全句译文：__________________________________________________________________________……之后才……我发展缓慢，差不多过了两百年后，查尔斯.巴比奇才将我制作成了一台分析机。拓展：Itwillbelongbefore...要过很久才......Itwon’tbelongbefore…用不了多久就……Itwaslongbefore...过了很久才......Itwasnotlongbefore......没过多久就......()It_______longbeforewe______theresultoftheexperiment.A.willnotbe;willknowB.is;willknowC.willnotbe;knowD.is;knowC(2)原句：AfterIwasprogrammedbyanoperatorwhousedcardswithholes,Icouldthinklogicallyandproduceananswerquikerthananyperson.分析：who在句中引导_____从句，修饰先行词________,在从句中充当_________全句译文：__________________________________________________________________________定语operator主语在操作员用穿孔卡为我设计程序后，我能够进行逻辑“思考”，并且能够比任何人更快地算出答案。(3)Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold.a)so…that…意思是“如此…以至于…”，引导结果状语从句，so后须接形容词或副词。sothat引导的从句可表示结果或表示目的HeransofastthatIcouldnotcatchupwithhim.Hewentearlysothathegotagoodseat.Hewentearlysothathecouldgetagoodseat．()Sheis_______thatweallwanttomakefriendswithher.A.asuchkindgirlB.suchkindagirlC.soakindgirlD.sokindagirlDb)句中Ihavebeentold在句中充当_____,是一个_________，省略了关系词____,关系词在从句中充当_______全句译文：__________________________________________________________________________定语定语从句that宾语随着时间的推移，我的记忆能力发展得如此之快，就像一头大象一样，从来不会忘记告诉我的任何事情。原句：Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold.(4)ButIwasalwayssolonelystandingtherebymyself,untilintheearly1960stheygavemeafamilyconnectedbyanetwork.非谓语动词