人教版必修2高一英语第二册第3单元《Computers》PPT课件.ppt

Guess!,Atoy?,Ahandbag?,Computers,.Lead-in,Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydontlikemenow.DoyouknowwhoIam?,abacus,Guess!,.Warmingup,Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?,calculator,Iwasbuilttosolveanydifficultmathematicalproblemsin1936.AndIwasaslargeasaroom.,hugecomputer,DoyouknowwhoIam?,Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseImsmallenoughforyoutotakemewithyou.,notebookcomputer/laptop,DoyouknowwhoIam?,Thedevelopmentofcomputers,keyboard,mouse,monitor,screen,speaker,hostcomputer,1,2,3,4,5,6,.ReadingWhoamI?,Gothroughthepassagequicklyandanswerthequestions.,1.WhoamI?2.Whatsthemainideaofthetext?Itisaboutthe_ofcomputers.,AnalyticalmachineTechnologicalrevolutionIntelligenceArtificialintelligenceUniversalmachineTransistorFunction,分析机科技革命智力人工智能通用机晶体管功能,NewWordsandExpressions,WhoamI?Whatsthemainideaofthetext?Thisisaboutthe_ofcomputers.,Thecomputer,developmentanduse,timeandevents,Tellthehistoryofcomputers,1642,About1842,1940s,1960s,1970s,now,？,1936,CharlesBabbage,size,brainpower,calculatingmachineinFrance,hadgrownaslargeasaroom.,officesandhomes.,network.,1.Howoldisthecomputer?A.About370yearsoldBAbout270yearsold.C.About70yearsold.D.About470yearsold.,Thecomputerbeganasacalculatingmachinein1642.,2.Whenwasthecomputerthebiggest?A.In1642B.In1936C.Inthe1940sD.Inthe1970s,Bythe1940s,Ihadgrownaslargeasaroom.,3.Whowasthefirstpersontomaketheearliestcomputer?A.AlanTuring.B.CharlesBabbage.C.CharlesTuring.D.CharlesAlan.4.Whenwastheuniversalmachinebuilt?A.In1822.B.In1642.C.In1936.D.In1940.,B,C,Paragraph1,Paragraph2,Paragraph3,OvertimeIhavebeenchangedquitealot.,Thesechangesonlybecamepossibleasmymemoryimproved.,Sincethe1970smanynewapplicationshavebeenfoundforme.,3rdReading:Findoutthetopicsentenceofeachparagraph,2.Readthepassageagainandcompletethechartbelow.,OvertimeIhavebeenchangedquitealot.,calculatingmachineanalyticalmachineuniversalmachinePClaptop,Thesechangesonlybecamepossibleasmymemoryimproved,tubestransistorschipsnetworkWorldWideWeb,Sincethe1970smanynewapplicationshavebeenf