人教版英语必修二unit3Reading课件.ppt

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Unit3 Unit3Computers Heavy!Difficult!Hard!Tired!Warmingup Easy!Fast!Free! monitorkeyboardmousespeaker modemscannerprinterUSBflashdischarddisc Labeleachpart.124356monitorscreenCD-ROMmousekeyboardharddisk 1.Lookatthesepictures.Inpairsdiscusswhattheyhaveincommon.2.Whatdotheytellyouaboutthedevelopmentofcomputers?3.Whatdoyouthinkwillbethenextdevelopment? What’snext? 1.Lookatthetitleofthereadingpassage.Predictwhatitisgoingtobeabout.2.Doyouknowinwhatwayscomputersareusedtoday?Workoutalistandcompareitwithyourpartner.Pre-reading SkimmingReadthetextquickly.1.WhoamI?A.Anoperator．B.AlanTuring．C.Acomputer．D.Humanrace．C 2.What’sthepassageabout?Thetextmainlytellsusashorthistoryofthedevelopmentofthe__________andits____________indifferentfields.computerapplications ScanningReadthepassageandfinishthetimeline.16421822TheanalyticalmachinewasmadebyCharlesBabbage.Thecomputerbeganasacalculatingmachine. 1940sThefirstfamilyofcomputerswasconnectedtoeachother.Thecomputergrewrapidlybothinsizeandinbrainpower.Computershadgrownaslargeasaroom.1960s1936 1970snowComputerswereusedinofficesandhomes.Computersconnectpeopleallovertheworldtogether. Readthepassageagainandcompletethechartbelow.Carefulreading DevelopmentEarlydaysNameFunctionPoorStrongA_________machineSimplifydifficultsumsAn________machineThinklogicallyandproduceananswerquicklyA_________machineSolvedifficult______________________calculatinganalyticaluniversalmathematicalproblems DevelopmentNetworktimes________storedinTubesLargeSmall____________Smallchips_______________________NarrowWideFinance________RobotsMobilephones_______________SpacerocketsMedicaloperationsMemoryTransistorsApplicationsCommunicationTrade TopicsentenceSupportingdetailsParagraph1OvertimeIhavebeenchangedquitealot.CalculatingmachineAnalyticalmachineUniversalmachinePClaptop TopicsentenceSupportingdetailsParagraph2Thesechangesonlybecamepossibleasmymemoryimproved.tubestransistorschipsnetworkWorldWideWeb TopicsentenceSupportingdetailsParagraph3Sincethe1970smanynewapplicationshavebeenfoundforme.＊communications＊finance＊trade＊robots＊mobilephones＊medicaloperations＊spacerockets＊providingalifeofhighquality thesecondgeneration(1956-1963)thethirdgeneration(1964-1971)thefourthgeneration(1971-)Thefirstgeneration(1945-1956)Thehistoryofcomputers Summaryofthepassage.Ibeganasa__________machinein1642.Ittooknearlytwohundredyears________Iwasbuiltasananalyticalmachine.Ibecamea“universalmachine”in1936to________anymathematicalproblem.Iwasverybigatonetime.Postreadingcalculatingbeforesolve However,astime_______by,Iwasmadesmallerandsmaller.Iwasgivenafamily__________byanetworkintheearly1960s.Iwasableto_______myknowledgewithothers__________theWorldWideWeb.wentconnectedsharethrough Ihavebeenwidelyusedinmanyfields,suchasincommunication,_________tradeandmedical__________.Ihavealsobeenputintorobotsandspacerocketsto________theMoonandMars.I’mgladIamadevotedfriendandhelperofthehumanrace.financeoperationsexplore WhatisPC?Speakthenameonthewhole.Itmeans:personalcomputer.2.WhatisIT?InformationTechnology. 3.WhatisW.W.W?WorldWideWeb.4.科学技术Scienceandtechnology.5.人工智能Artificialintelligence.6.笔记本电脑laptop Howcomputershavechangedourlives?1.Brainstormalistofthingsthatyou,yourschoolandyourfamilyusecomputersfor.2.Thinkaboutwhatyouwouldhavetodoifyoucouldnotusecomputersanymore. ListofusesofcomputersWhatpeopledidbeforecomputersemailswriteletterswordprocessingwritebyhandortypewritersearchforinformationlookinencyclopedia,library,etc. ListofusesofcomputersWhatpeopledidbeforecomputerswatchDVDsgotothecinemastoreinformationwriteeverythingdownandputintofilesandfolders Retellthetextaccordingtothefollowingcluesandthenwritedownyourretelling.Homework ChangesofthemachineCalculatingmachineAnalyticalmachineUniversalmachineMachinewithartificialintelligenceMachinewithnewtransistorAfamilyconnectedbyanetworkAfamilyusedbytheInternetRetell