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Unit3reading1.Enablestudentstounderstandthewholepassage.2.Improvestudents’abilityofgatheringinformation.3.letstudentsknowsomebasicinformationaboutcomputersTeachingaimsPre-reading:1.I’mamachinethathasascreenwithmovingpicturesandsounds.2.Withmeyoucanwatchdifferentprogramjustathome.WhoamI?TVset1.I’malsoamachine.ButI’msmall,soyoucanputmeinyourpocket.2.Therearetennumbersonme.3.Andyoucanusemetotalktootherseveninafar-awayplace.WhoamI?Mobilephone1.ThereisnodoubtthatI’malsoamachine.2.Therearesomenumbersandlettersonme.3.Peopleoftenusemetoplaygames,andteachersoftenusemetogivelessons.WhoamI?computerReadingWHOAMI?1.Whoisthespeakerinthisstory?2.What’sthemainideaofthispassage?A.Thedevelopmentofcomputers.B.Thedevelopmentanduseofcomputers.C.Amachinewhichissimple-minded.D.Computersmayreplacehumanbeings.3.Thetextiswrittenintheorderof.A.timeB.spaceC.logicD.alltheaboveAcomputer.While-reading(1):timeline1642:1822:1936:1940s:1960s:1970s:Thecomputerbeganasacalculatingmachine.TheAnalyticalMachinewasbuiltbyCharlesBabbage.Thecomputergrewrapidlybothinsizeandinbrainpower.Computerhadgrownaslargeasaroom.Computerswereusedinofficesandhomes.Thefirstfamilyofcomputerswasconnectedbyanetwork.Manynewapplicationshavebeenfoundforcomputers.Now:Computersconnectpeopleallovertheworldtogether.While-reading(2):(Universalmachine)1.Whycouldyou“think”logicallyandproduceananswerquickerthananyperson?2.Itotallychangedmyshape,because.3.Manynewapplicationshavebeenfoundforme,suchas.4.(translation)Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold.While-reading(3):1.Whycouldyou“think”logicallyandproduceananswerquickerthananyperson?BecauseIwasprogrammedbyanoperatorwhousedcardswithholes.While-reading(3):2.Itotallychangedmyshape,becausemymemorywasfirststoredintubes,thenontransistorsandlateronverysmallchips.Itotallychangedmyshape！While-reading(3):3.Manynewapplicationshavebeenfoundforme,suchascommunication/finance/trade/robots/mobilephones/medicaloperations/spacerocketsCareful-reading:4.(translation)Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold.随着时间的推移，我的记忆力发展的如此之快，就像一头大象，我从来不会忘记告诉我的任何事情。While-reading(3):Advantages•listentothemusic•seefilms•watchnews•communicatewithfriends•buythingsonlineDisadvantages•playcomputergamestoomuch•chat（聊天）ontheInternettoomuch•littletimetostudyOneofyouboughtacomputeryesterday.Talkabouttheadvantagesanddisadvantagesaboutcomputers.MakeadialoguePost-reading:pair-workHomework1.Writing(about80--100words)TheUseofComputersinOurDailyLife2.PreviewlanguagepointsofthistextandfinishtheexercisesonP153--155（学案）