人教版BOOK 2第三单元Who am I精ppt课件

Unit3Computers,.,2,First,letsplayagame!,Whatarethey?,Hugecomputer,PC(personalcomputer),laptop(notebookcomputer),PDA(personaldigitalassistant),robot,Similarity?,Theyrecomputersindifferentstages.,Whatsnext?,i-robot(intelligentrobot),WHOAMI?,Unit3ComputersReading,Unit3Computersreading,.,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.Illgiveyousomeclues.,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