人教版BOOK 2第三单元Who am I课件.ppt

Unit3Computers 2 First let splayagame Whatarethey Hugecomputer PC personalcomputer laptop notebookcomputer PDA personaldigitalassistant robot Similarity They recomputersindifferentstages What snext i robot intelligentrobot WHOAMI Unit3Computers Reading Unit3Computers reading 9 Task1Lookatthepicturesandthetitleofthereadingpassage Predictwhatitisgoingtobeabout Prediction 10 Task2Lookattheseinventions Puttheminorderaccordingtothetimewhentheyappeared Afterreadingthepassage checktoseeifyouwereright analyticalmachine laptop calculatingmachine robot PC universalmachine 2 1 4 5 6 3 11 While reading Thedevelopmentofcomputers Step2Justhaveafastreading Findouttopicsentencesofeachparagraph OvertimeIhavechangedquitealot Thesechangesonlybecamepossibleasmymemoryimproved Sincethe1970smanynewapplicationshavebeenfoundforme Step3Moredetailedreading ReadPara 1in2minsandfindoutthedevelopmenthistotyofcomputers I llgiveyousomeclues acalculatingmachine in1642 ananalyticalmachine in1822 CharlesBabbage auniversalmachine in1936 AlanTuring ahugecomputer aslargeasaroom in1940s apersonalcomputerandalaptop andusedinofficesandhomessincethe1970s acalculatingmachine in1642 帕斯卡计算器是由布莱斯 帕斯卡 BlaisePascal 发明的 帕斯卡计算器可以把一长串数字相加 在他的计算器中有一些互相联锁的齿轮 一个转过十位的齿轮会使另一个齿轮转过一位 人们可以像拨电话号码盘那样 把数字拨进去 计算结果就会出现在另一个窗口中 ananalyticalmachine in1822 分析机是由英国数学家查尔斯 巴贝奇设计的一种机械式通用计算机 它的设计逻辑却非常的先进 是大约100年后电子通用计算机的先驱 a universalmachine in1936 notarealmachine butjustamathematicalmodel ahugecomputer aslargeasaroom inthe1940s ENIAC Para 2 technicalwords Memory storageorstoragecapacityasofacomputer disk etc chip transistor tube network TheWorldWideWeb Thesechangesonlybecamepossibleasmymemoryimproved tubestransistorssmallchipsnetworkWorldWideWeb moreandmorepowerful Para 3 Findsomesupportingdetailsforthetopicsentence 1minute Sincethe1970smanynewapplicationhavebeenfoundforme Sincethe1970smanynewapplicationshavebeenfoundforme communicationsfinancetraderobotsmobilephonesmedicaloperationsspacerocketsexploringtheMoonandMars Anyhow mygoalistoprovidehumanswithalifeofgoodquality Name computerBorn time place Myrealfather Mysize 1 inthepast 2 modern Myhistory 1 1642 machine2 1822 machine3 1936 machine4 1940s 5 1970s and Mymemory Myapplications WhoamI 1642 France AlanTuring huge smallerandsmaller analytical calculating universal laptop PC tubes transistors chips communication finance robot mobilephone spacerocket medicaloperation trade hugecomputer 26 Writingskills personification 拟人 narrativeperspective first personnarrative 叙述角度 第一人称角度 chronologicalorder 时间顺序 mainideasandsupportingdetails 主旨 支撑细节 Howdoweusecomputersindailylife communication entertainment information workandjob commerce financeonline communication chattingsendingE mailsexpressingideasonlinemakingnewfriends entertainment playinggameswatchingmovieslisteningtomusic information readingnewssearchingforusefulinformation suchaspriceinformation jobinformationandsoonaskingquestionsandseekingforhelp commerce financeonline shoppingonlinetransferringaccountspayingallkindsofbills suchaswater electricityfees cellphonefeesandsoonspeculatinginstocksonline workandjob usingcomputerstodojobsapplyingforjobsonlinedoingresearch 34 Summary I thec wasacalculatingmachinein1642inF In1936 Ibecamea u machine tos anymathematicalproblem Sincethe1970sIhavebeenusedfirstasaP andthenasal inofficeandh omputer rance niversal olve C aptop omes 35 Manychangeshavehappenedtomys somys totallychanged Ihavebeenwidelyusedinmanyfields Ihavealsobeenputintorobotstoe theMoonandMars ize hape xplore 36 Discussion Shouldhighschoolstudentssurftheinternet 上网 Ithinkhighschoolstudentsshouldsurftheinternetbecause first secondly thirdly Ithinkhighschoolstudentsshouldnotsurftheinternetbecause first secondly thirdly 37 AdvantagesWecancommunicatewithfriendsListentothemusicSeefilms watchnewsPlaygamesDoshoppingSavealotoftimeDoalotofusefulthings 38 DisadvantagesSomepeopleespeciallytheteenagersabandon 沉迷于 themselvestothecomputergamesandchattingontheInternet Asaresult theyhavelittletimetostudy Somepeopleusethecomputerwrongly Ifyouspendtoomuchtimeonit itwilldoharmtoourhealth 39 ConclusionThereisnodoubtthatcomputerhastwosides too Ifwemakegooduseofit itwill