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BeforetheclassYouaresupposedtobeengagedinthematerialandinwhateveritisthatwearediscussinginclass,notnecessarilythinkingaboutgettingdowneverywordthatIsay.I’dlikeyoutotakeactivenotesratherthanpassivenotes.Writedownwhatcanmakeyoufeelorlearnsomething.Betterattention,betterunderstandingofthematerialifyouareactivelyengaged.Betterattention,betterunderstandingofthematerialifyouareactivelyengaged.Youaresupposedtobeengagedinthematerialandinwhateveritisthatwearediscussinginclass,notnecessarilythinkingaboutgettingdowneverywordthatIsay.I’dlikeyoutotakeactivenotesratherthanpassivenotes.Writedownwhatcanmakeyoufeelorlearnsomething.1.WhatdidthefirstTVinyourhomelooklike?Howbigwasit?Whatwasthepicturelike?2.WhatdoestheTVyouareusingnowlooklike?Howbigisit?Whatisthepicturelike?3.Whatarethedifferencesbetweentaperecorders,CDplayers,MDplayersandMP3players?ReviewWordsandexpressions单词回顾学生早读时已预习过本单元单词，可利用几分钟时间带学生快速回顾温习。对单词的熟练度越高，阅读的速率也越高。WordsReviewevolutiondrawbackprincipleconstructdelayaccessiblen.演变，发展，进化n.缺点，缺陷，不利条件n.原理，法则，道德原则，行为准则vt.制造，修筑，建造vt.&vi.（使）推迟，延迟n.延误，延迟adj.可使用的，可接触的，可到达的，易理解的WordsReviewdistributepercentagereceivertubediscvt.使分布，分散；分发，分配，分销n.百分率，百分比n.无线电接收机，听筒，受话器，接受者n.管子，管状物，伦敦地铁n.唱片，（计算机）磁盘windcomponenteventuallyportablecassetteWordsReviewvt.&vi.上发条，缠绕，蜿蜒，曲折n.组成部分，成分，部件adv.最后，终于adj.便携式的，轻便的n.盒式磁带，卡式磁带digitalstorageforeseepatentadaptationrelayscepticalWordsReviewadj.数码的，数字式的n.存储，储藏（空间）vt.预料，预见，预知n.专利权，专利证书n.适应，改编本，改写本vt.播放，转播；接转，转发n.接力赛，中继设备adj.怀疑的black-and-whitesatellitedishwindupn.卫星电视碟形天线上发条adj.黑白的MatchTomastersomebasicknowledgeofhowtounderstandheadingsTogainsomeinformationaboutthehistory,thecurrentsituationandthefutureimprovementofvideoandsounddevicesTomasterthewordsandexpressionsinthisreadingtextReadingTips阅读时，可根据阅读任务的不同，综合运用略读(skimming)与扫读(scanning)。提高快速阅读水平。SkimmingandscanningSkimmingandscanningaretwofastreadingskillstohelptobrowsetextandextractthekeypoints.Theskillsrequirepractice,butonceyouhavegotthehangofthemyou’llfindyoucangetthroughasubstantialamountofreadinginquiteashorttime.Thesereadingmethodsmakeiteasierforyoutograsplargeamountsofmaterial,especiallywhenyou'repreviewing.Theyarealsousefulwhenyoudon'tneedtoknoweveryword.略读(skimming)只看文章标题、下标题以及每个部分或者段落第一行，关注文章中反复出现的关键词。略读时，要用充足的时间读懂段落的第一句和第二句，因为第一句往往是该段的主题句(topicsentence)，而第二句往往是对前句的延伸(extension)或进一步的解释(explanation)。通过略读把握文章大意运用扫读(scanning)迅速浏览从第三句开始的后面部分,搜寻作者对开头两句的支持句(supportingsentences),并同时注意文章中间是否有转折词(transition),因为这些词常常会把文章的思路逆转或加入其它重要的信息。当读到段落的最后一句时,我们又要使用略读,这时必须再次放慢速度(slowdownyourpace)直到完全消化作者对段落的小结(conclusion),因为该小结有可能与主题句截然相反或引导读者进入下一个段落。通过扫读寻找特定信息或特定词组ageneralideacertaininformationtitlesandheadingsthefirstandlastsentencesofparagraphsthefirstandlastparagraphspicturesandchartsScanthetextforkeywordsandphrases,dates,etc.Donotneedtoreadthewholetext.UnderstandingheadingsappearbeforeeachsectionofatextshowhowatextisorganizedgiveanideaastothecontentsofeachsectionCanyoufigureouthowthetextonPages2-3isorganized?(Skimming)TV(inorderoftime)EarlyhistoryofTVThemodernage:satelliteTVSound&videorecorders(inorderoftime)EarlyhistoryofsoundrecordersSoundandvideorecordersSoundandvideogodigitalThefutureHowthistextisorganized?SkimmingforgeneralideasTheinformationinthisarticleisorganized_________.A.byparagraphsB.inorderofplaceC.byconceptsD.bysub-topicsteamworkReadingComprehensionISkimmingScanningforspecificinformationScanningReadingComprehensionII1.WhodevelopedthesystemusedformostearlyTVbroadcasts?JohnLogieBaird.2.Whomadethefirstrecordingofahumanvoice?ThomasEdison.3.Whatweredevelopedbythelate1960s?Portablecassetteplayersandvideorecorders.1.ColourTVbecamepopularwithinjustafewyearsafteritwasinvented.2.PeoplewithoutsatellitedishesdonotbenefitatallfromsatelliteTVbroadcasts.ReadingComprehensionIIIScanning3.Someofthefirsttaperecordersusedplastictapetorecordon.4.RecordsandcassettesdonotofferasgoodasoundqualityasCDs.5.Newtechnologywillsoonmakemanyofthethingstalkedaboutinthearticleoutofdate.Workoutthetimelineforthedevelopmentofvideoandsounddevices.ReadingComprehensionIVYearEvent1877Thefirstrecordingofahumanvoicewasmade.18871925EmileBerlinerinventedarecordplayerthatuseddiscstorecordon.ThefirstpublicTVbroadcastsweremade,intheUSA.1929193819621967198219931995RegularpublicbroadcastingbeganinLondon.ThefirstcolourTVprogrammewasbroadcast.SatelliteswereusedtobroadcastTV.RegularcolourTVbroadcastsbeganintheUK.ThefirstCDsweremadeavailable.TheVCDwasborn.TheDVDwasinvented.Undoubtedly,bothTVandaudiodeviceswillplayanincreasinglyimportantroleinourfuturelife.Whatotherfunctionswouldyoulikethemtohaveinthefuture?DoyouthinkwemayhaveaTV-wallinthefuture?referencereference1.Youcanobtaininformationquicklyinatextbyunderstandingtheheadings.2.Thinkaboutthemeanings:evolution,drawback,principle,delayconstruct,distribute,receiver,tubewindup,keeppacewith,textmassagekeepintouchwith,satellitedishNow2minstotestyourspelling.1.English-Chinesewindup,receiver,component,portable,digital,cassette,adaptation2.Chinese-English演变，缺点，制造，存储，专利权，转播，怀疑的，百分比，预见Whenfinished,exchangeyourpaperstoseewhodoesthebest.请点击word图标QuizI:Fillinth