人教版高中英語 必修二 Unit3 《Computers -Reading》 課件

Unit3ComputersWhat’snext?ComputerandInternetplaygamesgatherinformationdoshoppingcommunicateforhomeworklistentomusicwatchmovies……DoyouknowthefollowingthetermsaboutthecomputersandtheInternet?softwareharddisk

downloaduploade-mailwebsitehomepagepasswordviruswebfanshackersurftheInternetworldwideweb萬維網(wǎng)Nowlet’scometothereadingFastreadingandpickouttheitemsmentionedinthetext.anabacusacalculatingmachinechangeofmysizevirustheAnalyticalMachinemadebyCharlesBabbagetransistor7.harddisk8.connectedbyanetwork9.chatroom10.servethehumanrace★★★★★★1.Whichtype/styledoesthetextbelongto?2.Mainidea:Thisisashorthistoryofthe__________ofthecomputer.3.WhydoesthewriterusethetitleWHOAMI?

Description(描寫)B.Naration(敘述)C.Exposition(說明)D.Argumentation(議論)Personification(擬人）thefirstperson—simple,vivid（生動）,interesting,understandable.developmentthecomputer

Irefersto_____________.164218221940s1970sNowCarefulreading.Finishthetimelinebelow.The“analyticalmachine”wasmadebyCharlesBabbage.Thefirstfamilyofcomputerswasconnectedtoeachother.Thecomputerbeganasacalculatingmachine．1936Thecomputergrewrapidlybothinsizeandinbrainpower.Thecomputerhadgrownaslargeasaroom.1960sManynewapplicationshavebeenfoundforthecomputer.Computersconnectpeopleallovertheworldtogether.Nowhaveyouknownmydevelopment?Para1Para2Para3TopicsentenceSupportingdetails1.calculatingmachine……1.tube……1munitions2.finance……Carefulreading

readthepassageagainandcompletethechartCarefulreading

Readparagraphoneandcompletethechart.Paragraphone

TopicsentenceSupportingdetailsOvertimeIhavebeenchangedquitealot.calculatingmachineanalyticalmachineuniversalmachinepclaptop

PC()

analyticalmachine()

calculating

machine()laptop()universal

machine12345Changesinsize1._______________(earlier)2._______________(inthepast)3.____________________(modern)notverybighugesmallerandthinnerReadparagraphtwoandcompletethechart.Paragraphtwo

TopicsentenceSupportingdetailsThesechangesonlybecomepossibleasmymemoryimproved.5.worldWideWworkParagraphthreeTopicsentenceSupportingdetailsSincethe1970smanynewapplicationshavebeenfoundforme.Rmunications2.finance3.trade4.robots5.mobilephones6.medicaloperations7.spacerockets8.ProvidealifeofhighqualityI

wasbornasa___________machine

in1642.WhenIwasyoung,Iwasgoodatsimplifyingdifficultsums.About2hundredyearshadpassedbeforeIcouldthink_________andproducequickeranswers.Atthattime,Iwascalledan___________machine.In1936,Iwasbuiltasa___________machine.Ihadtheabilityto_______anymathematicalproblem.Fromthenon,Igrewrapidlybothin_______andmemory.AfterIstoredmymemoryon__________insteadofintubes.Ibecame_______in

sizebut_________in

intelligence.logicallysolvesizetransistorssmallercleverer

calculatinganalyticaluniversalSummaryInthe1960s,Icouldbeconnectedwithothercomputersbya___________.Fromthenon,Iwasabletosharemyknowledgewithothersthroughthe________________.Afterthat,Ihadmanynew______________.Now,Iamgladtoservehumanbeingsasa________workWebapplications

devotedAstimewentby,Ibecameevensmaller,forIputmymemoryonaverysmall______,whichmademebecomePCandlaptop.

chipWorldWideDiscussionEverycoinhastwosides,sodoestheInternet.Nowdiscusstheadvantagesanddisadvantagesofthecompu