高一英语人教课标必修2-unit3-reading课件

Unit3ComputersUnit3Computers1Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculating

inthepast,butnowIamabitlonelybecausetheydon’tlikemenow.Theabacusplayedaveryimportant

part

incalculatinginancientChina.WhoamI?abacusIamveryoldnow.Theabacus2Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemetosolvemathematicalproblems.Thecalculatoriswidelyusedinbusinessandfinance.WhoamI?

calculatorIamverysmall.Thecalculato3Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailsandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.WhoamI?Thelaptopservesasadevotedfriendandhelperofthehumanrace.laptopIcanbeusedforcalculating.4topicsentenceofeachparagraphPara1:OvertimeIhave

beenchangedquitealot.Para2:ThesechangesonlybecamepossibleasmymemoryimprovedPara3:Sincethe1970smanynewapplicationshavebeenfoundforme.Thepassageisaboutthe____________andnew__________________ofthecomputer.developmentWhoamI?computerapplicationstopicsentenceofeachparagra5OvertimeIhavebeenchangedquitealot.Para1acalculatingmachineananalyticalmachineauniversalmachinefunction(功能)SimplifydifficultsumsThinklogicallyandproduceananswerquicklySolvedifficultmathematicalproblemsgrowaslargeasaroombeusedinofficesandhomesfirstasa____thenasa_______PClaptopbeganaswasbuiltaswasmadetoworkasfromthenongrewrapidlybothinsizeandinbrainpower1642182219361940sastimewentby1970showeverOvertimeIhavebeenchanged6TheComputerMuseumHello,everyone!Welcometothecomputermuseum.Now,letmeintroducetoyou.Overtime,thecomputerhasbeenchangedquitealot.1642:1822:From1936on:Bythe1940s:Astimewentby:Sincethe1970s:beganas…Simplify…wasbuiltas…Think…andproduce…grewrapidlybothin…hadgrownas…as…wasmade…first…then…hasbeenusedin…thedevelopmentofthecomputerTheComputerMuseumHello,ever7Para2Thesechangesonlybecamepossibleasmymemoryimproved.ItwasstoredtubetransistorchipAsaresult,Itotallychangedmy_________.shapeIntheearly1960s,myfamilywereconnectedbya________.SoIwasabletosharemyknowledgewithothersthroughthe__________________.networkWorldWideWebPara2Thesechangesonlybecam8

result?shape?thecomputer’sfamily？Iwanttoknowsomethingaboutthememoryofthecomputer.PairworkA:Wherewasthememorystored?B:First…then…later…A:…A:Wherewasthememorystored?B:Firstitwasstoredintubesthenontransistorsandlateronverysmallchips.A:What’stheresultofthat?B:Asaresult,thecomputertotallychangeditsshape.A:Whendidthecomputerhaveafamily?B:Intheearly1960s,computerswereconnectedbya

network.result?Iwanttoknowsomethi9Para3c______________f______________t_____________r____________m_________p________m__________o__________s________r________ommunicationinanceradeobotsobilehonesedicalperationspaceocketsMygoalis__________________________________________________toprovidehumanswith

alifeofhighquality.AdevotedfriendandhelperofhumanraceSincethe1970smanynewapplicationshavebeenfoundforme.Para3c______________f________10DiscussionShouldhighschoolstudentssurftheinternet(上网)?addictedto（沉迷）AdevotedfriendandhelperDiscussionShouldhighschools11Peoplesaycomputershavemoreadvantagesthandisadvantages.Doyouthinkso?advantagesdisadvantagesABSuchas:Sendane-mailItisbadforyoureyesPeoplesaycomputershavemore12Download(下载)informationSeeamovieorwatchTVPlaycomputergamesBuygoodsyouwant

Dosomechattingadvantages-------improvepeople'sabilityofthinking

Download(下载)informationSeea13TooexpensiveAddictedto（沉迷）playinggames

-------disadvantagesPeoplecan’twriterightChineselettersNotarealworldTooexpensiveAddictedto（沉迷）pl14Thecomputercanbeusedto:playcomputergameslistentomusicwatchmoviescommunicatewithourfriendssearchforusefulinformation(Google,Yahoo!)buythingsIlike(eBay,Taobao)typemyhomeworkdrawpicturesWhatcanthecomputerbeusedtodo?Discussiondoharmtooureyesawasteoftimeandmoneyinfluenceourstudythereissomethingdangerousonline…advantagesdisadvantages

AdvantagesanddisadvantagesoftheInternetWiththedevelopmentoftechnology,theInternetisplayingamoreandmoreimportantpartinourdailylife.Atfirst,…What’smore,…Inaddition…