高中英语Unit4 CYBERSPACE Lesson 1 3北师大版必修2VIP免费

Unit4CYBERSPACELesson1Teachingaims:Topractiseusingvocabularyofcyberspace.Topractiseusingwillandgoingtototalkandwriteaboutthefuture.Teachingdifficulties:TorevisePresentSimpleandPresentContinuous.TeachingAids:computerandcassetteTeachingprocedures:Ⅰ.WarmingupComparedto20yearsagohowdoyouthinktechnologywillchangeourlives?Theteachercangivethefollowinghelp:Forexample:Goshoppingonline.Needn’tcarrycashandusecreditcards.Insteadofgoingtothebankyoucanuseacomputerandatelephonetopayforbills.Theteacheraskthetwoquestions.1.Imaginewhathappensinthenexttwentyyears?2.Whatdoyouthinkthecomputergivesusadvantageordisadvantageforourlife?Ofcoursethestudentswillgivevariousanswers.Lookatthetitleofthearticle.Whichofthesetopicsdoyouthinkitwillmention?*theInternet*artificialhuman*timetravel*robots*globalwarming*virtualrealityReadthearticlequicklyandcheckyourguesstoquestion2above.Ⅱunderstandingthetext1.Withthedevelopmentofcomputers,somescientistssayitislikelythatcomputer用心爱心专心cangiveusdisaster.2.ThetextinferstousthatitisnecessaryforustoworrythattheInternetcandoharmtous.3.Someexpertssayinthefuturewewillnotgotoschoolintheclassroomlikeus.4.Inthefuturemanypeopleliveinthecyberspace.5.Thetexttellsusyoucandomanythingswhichdon’texistinfact.6.InspiteoftherapiddevelopmentofInternet,butmanythingscan’tdisappearsuchastelevisionandthemailKeys:TFTTTFⅢLearningvocabularyDotheexercise4Correcterror1.Inthelastthirtyyears,theInternethasgrewrapid.2.Terroristmay“attack”theworld’scomputers,causechaos,makeplanesandtrainscrash.3.Itisconvenientorderticketsfromtheinternet.4.In1983,therewereonly200computersconnectingtotheInternet.5.Thisisclearthatwecanuseinternettodoallkindsofthingsathome.6.Personal,I’moptimisticaboutthefutureoftheinternet.7.Associetydevelops,computerswillmakeourlifemuchconvenient.8.Themailservicemayalsodisappearastheincreasinguseofe-mail.Keys:1.rapidly改为rapid2.make前加and3.order前加to4.connecting改为connected5.This改为It6.personal改为personally7.much改为more8.as改为withⅣdiscussingWhatpossiblechangesdosomeexpertsbelievetheinternetcanbringtoourlives?用心爱心专心Whyaresomeexpertspessimisticaboutthefuture?Wecanfeelconvenient,wecandoallkindsofthingsfromtheInternetathome,suchasbuybooks,findoutaboutholidayoffers,bookticketsandsoon.Sometraditionalthingswilldisappear.Wemayliveinavirtualworld.Hackercangetintothecomputersofbanksandgovernmentsothatchangedataorstealawayimportantinformation.Terroristswillattacktheworld’scomputers,causechaos,makeplanesandtrainscrashevenandcausenuclearwar.VoiceyouropinionDoyoufeelpessimisticoroptimisticaboutthefutureoftheInternet?Why?ⅤLanguagepoints1.In1983,therewereonly200computersconnectedtotheInternet.=whichwereconnectedtotheInternet.computer和connect是被动关系,因此connectedto是过去分词做定语来修饰computer,相当于一个定语从句。Itissurprisingthattherewere3oogoldcoinsburiedunderground.＝whichwereburiedunderground.真是令人惊奇，地下埋了300枚金币。Therearesomanypeoplewatchingthebigfireinthestreet.=whowatchedthebigfireinthestreet.People和watching是主动关系watching是现在分词做定语表主动来修饰people相当于定语从句。2.Someexpertsarepessimisticaboutthefuture.一些科学家对（计算机主宰的）未来表现出悲观的态度。bepessimistic/optimisticabout对…悲观/乐观用心爱心专心I’mratherpessimisticaboutthepresentsituation.我对目前的局势感到悲观。3.ItisclearthatwearegoingtoseeanexplosionofshoppingontheInternet.很显然，不远的将来我们就会看到网上购物的狂潮。It作形式主语，真实主语是that引出的主语从句。＝thatwearegoingtoseeanexplosionofshoppingontheInternetisclear.ItisclearthatinthenextfewyearstheEarth’sclimatewillchange.=ThatinthenextfewyearstheEarth’sclimatewillchange.4...theuseofcomputerswithsoundsandpicturesthatmakeyoufeelasifyouareinarealsituation.(虚拟世界)是计算机通过声音和图像模拟现实，以使人感到仿佛置身于一个真实的空间。asif连词，仿佛，好像Itsoundsasifshe’sbeenreallyill.听上去好像她真的病了。5.Wehavetotakeimmediateaction.我们得马上采取行动。takeaction采取行动。Wemusttakeactionstopreventthespreadofdisease.我们必须采取行动防止疾病的传播。ⅥgrammarBeforedoingtheexerciseturntopage92withthehelpoftheteacherstudentslearngrammarthendothefollowingexercise.Dotheexercise7,8and9LanguageinUseWorkinpairs.StudentAisapessimistandStudentBisanoptimist.Makepredictions用心爱心专心aboutlifebytheyear2050.Homework:Page55exercise4,5and6用心爱心专心