人教版教材英语必修二unit3-computers-课件.ppt

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1、Unit3ComputersToday'staskI.Warmingup&pre-reading(1)Howmuchdoyouknowaboutcomputers?(2)Whatisit?II.Reading(Task–basedlearning)III.PostreadingWhatareadvantagesanddisadvantagesofcomputers?Howcanwemakeuseofit?learningaimsDoyouknowthem?keyboardmouseUSBflashdiscPClaptop

2、Whatdoyouusecomputersfor?ComputerandInternettypeyourletterPlaycomputergamescommunicatewithmyfriends.searchusefulinformationlistentomusicwatchmovies……laptopWhoamI?Reading1.Inthepassage,“I”refersto_________.2.thetopicsentenceofeachparagraph.ParagraphI:paragraphII:p

3、aragraphIII:Sothewholepassageismainlyabout:_________________________________.I.Scanning(略读)acomputerOvertimeIhavebeenchangedquitealot.Thesechangesonlybecamepossibleasmymemoryimproved.Sincethe1970smanynewapplicationshavebeenfoundforme.Fast-readingthedevelopmentofc

4、omputers.3Detailedreading(细读)Readthepassagemorecarefullyandfindmoreinformationaboutcomputers.Thenfillinthetwoformsbelow.164219361940s1970snowThecomputer__________________machine．1822AlanTuring_____________________howcomputerscouldbemadetowork．Computershad________

5、________aroom.1960sFirstas_____andthen________computerswereusedinofficesandhomes.Computersconnectpeopleallovertheworldtogether.Afamilyofcomputerswasconnectedbyanetwork.The_________machinewasmadebyCharlesBabbage.beganasacalculatinganalyticalwroteabooktodescribegro

6、wnaslargeasaPCasalaptopFromtheaboveform,wecanknowthatthetextiswritteninanorderof___________timeearlydays(thefirstparagraph)poor_____NameFunction(功能)acaculatingmachinesimplifydifficultsumsa___1____machinethinklogicallya2.______machinesolvedifficult3._________netwo

7、rktimes(the2ndand3rdpara)largemymemorytubes_____4._________Smallchipssincethe1970s5___________havebeenfoundinmanyfields(领域).6.___________;finance;7.____;robots;mobilephones;8.______________;spacerocketsnarrow_____analyticaluniversalmathematicalproblemstransistors

8、communicationtradeapplicationsmedicaloperationsstrongsmallwideyourunderstandingofsentencesFindasentencetoreplacethefollowingone(inthe1stparagraph)Peoplethought