必修二unit3 computers reading阅读优质课ppt课件.ppt

1 1 thetopicsentenceofeachparagraph Paragraph1 paragraph2 paragraph3 2 Sothewholepassageismainlyabout Task1Scanning 略读 OvertimeIhavebeenchangedquitealot Thesechangesonlybecamepossibleasmymemoryimproved Sincethe1970smanynewapplicationshavebeenfoundforme Fast reading thedevelopmentofcomputers 2 Task2CarefulReading 细读 Readthepassagemorecarefullyandfindmoreinformationaboutcomputers Thenfillinthetwoformsbelow 3 Thecomputer machine 1822 AlanTuring howcomputerscouldbemadetowork Computershad aroom 1960s Firstas andthen computerswereusedin and Computersconnectpeopleallovertheworldtogetherasdevoted and Afamilyofcomputerswasconnectedbya The machinewasmadebyCharlesBabbage beganasacalculating analytical wroteabookabout grownaslargeas aPCasalaptop network offices homes friends helpers 4 Fromtheaboveform wecanknowthatthetextiswritteninanorderof time findmoreinformationaboutthedevelopmentofcomputers Fillintheblanks 5 Earlydays paragraph1 NameFunction 功能 a1 machine simplifydifficultsums an2 machine think3 a4 machine solvedifficult5 analytical logically universal mathematicalproblems calculating 6 networktimes paragraph2 3 6 mymemory tubes 7 transistors smallchips sincethe1970s8 havebeenfoundinmanyfields 领域 9 finance 10 robots mobilephones 11 spacerockets applications communication trade medicaloperations 7 calculatingmachine analyticalmachine universalmachine artificialintelligence PC desktop notebook servethehumanrace Goal NetworkBASICInternet Howthecomputertechnologyhasbeendeveloping consolidation 8 Readthepassageandchoosethebestanswers 1 Whatcanwelearnfromthetext AComputerhasashorthistory BNooneknowscomputerwhenthefirstcomputerwasmade CComputersarenotwidelyusedeventoday DComputersarewidelyused 2 Whowasthecomputer srealfather AAlanTurningBNotmentionedinthetext CBillGatesDCharlesBabbage3 Thecomputeralmostchangedcompletely Ain1642Bin1882Cinthe1960sDinthe1970s D A C 9 Itbeganasa machinein1642inFrance In1822itwasbuiltasan machine Thenin1936AlanTuringwroteabookandbuilta machine Astime itwasmadesmallerbutitsmemorygrew and Inthe1960stheygaveitafamilyconnectedbya NowpeoplecallittheInternet Itwasusedin and sincethe1970s Sinceitsbirthithastrulybeenbuilttohelpthe calculating analytical universal wentby larger larger network offices homes Testinclass Summary human race 10 Whatareadvantagesanddisadvantagesofcomputers Howcanwemakeuseofit Shouldhighschoolstudentssurftheinternet 上网 Discussion 11 advantageswecancommunicatewithfriendslistentothemusicseefilms watchnewsplaygamesdoshoppingsavealotoftimedoalotofusefulthings DisadvantagesSomepeopleespeciallytheteenagersabandon 沉迷于 themselvestothecomputergamesandchattingontheInternet