必修二Unit3Warmingup黄梅娃教学课件.ppt

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1、Unit3ComputersPeriod1WarmingupHeavy!Difficult!Hard!Tired!Easy!Fast!Free!keyboardmousemonitorscreenspeakerhostcomputercameraWhatdotheyhaveincommon?anabacusacalculatoradesktopanotebookcomputeralaptopdigitalcameraarobotPDA?(Whatdotheyhaveincommon?)Ithinkthat…Inmyop

2、inion…Ibelievethat…What’syourreason?Whydoyouthinkso?1.Theycanbeusedforcalculating.2.Theycandealwithmath’problems.3.Theyareourfriends.4.Theyareusefulandhelpful.DiscussionTheyareallcomputerswhichdevelopedindifferentperiods.Whatdotheyhaveincommon?carrythingsworkinw

3、ars(战斗)Whatdoyouthinkwillbethenextdevelopment?仿真机器人entertainment娱乐PredictTheandusageofcomputers.developmentReading:WhoamI?advantageswecancommunicatewithfriendslistentothemusicseefilms&watchnewsplaygamesdoshoppingsavealotoftimedoalotofusefulthingsPre-reading2.Wha

4、twaysarecomputerusedtoday？Pre-reading3.Puttheminanorder()analyticalmachine()calculatingmachine()PC()laptop()robot()universalmachine个人电脑手提电脑计算机通用机器分析机机器人SkimmingFindoutthetopicsentenceofeachparagraph.Para1Para2Para3OnlytimesIhavebeenchangedquickalot.Thischangeson

5、lybecamepossibleasmymemoriesimproved.Sincethe1970smanynewapplicationshavebeenfoundforme.Whatisthemainideaofthepassage?Thisisashortoftheofcomputershistorydevelopmenttimeline1642:1822:1936:1940s:1960s:1970s:Now:Scanning:Thecomputerbeganasacalculatingmachine.theAna

6、lyticalMachinewasbuiltbyCharlesBabbage.Thecomputergrewrapidlybothinsizeandinbrainpower.Computerhadgrownaslargeasaroom.Computerswereusedinofficersandhomes.Computersconnectpeopleallovertheworldtogether.ThefirstfamilyofcomputerswasconnectedtoeachotherThehistoryofco

7、mputersPage19exercise2Para1Para2Para3TopicsentenceSupportingdetailsOnlytimesIhavebeenchangedquickalot.Thischangesonlybecamepossibleasmymemoriesimproved.Sincethe1970smanynewapplicationshavebeenfoundforme.calculatingmachine、analyticalmachine、universal、PC.、laptopTu

8、besTransistorChipsNetwork、WorldWideWebCommunicationFinanceTraderobotsMobilephonesMedicaloperationSpacerocketsthesecondgeneration(1956-1963)thethirdgeneration(1964-197