人教版高一英语必修二unit3_computers(reading)课件

Unit3reading1.Lookatthesepictures.Discusswhattheyhaveincommon.Predictwhatitisgoingtobeabout.What’snext?Whatdotheyhaveincommon?1.Theycanbeusedforcalculating.2.Theycandealwithmathsproblems.3.Theyareourfriends.4.Theyareusefulandhelpful.Discussionrobotartificialintelligencerobot2.Lookatthesepicturesandguesswhattheyare.acalculatingmachineanalyticalmachineuniversalmachinesolvedifficultmathematicalproblemscomputeraslargeasaroom3.Lookattheseinventions.Canyouputtheminanorderaccordingtothetimewhentheyappeared?Afterreadingthepassage,checktoseeifyouareright.()analyticalmachine()laptop()calculatingmachine()robot()PC()universalmachine123456ReadingWHOAMI?1.Whoisthespeakerinthisstory?2.What’sthemainideaofthispassage?A.Thedevelopmentofcomputers.B.Thedevelopmentanduseofcomputers.C.Amachinewhichissimple-minded.D.Computersmayreplacehumanbeings.3.Thetextiswrittenintheorderof.A.timeB.spaceC.logicD.alltheaboveAcomputer.While-reading(1):timeline1642:1822:1936:1940s:1960s:1970s:Thecomputerbeganasacalculatingmachine.TheAnalyticalMachinewasbuiltbyCharlesBabbage.Thecomputergrewrapidlybothinsizeandinbrainpower.Computerhadgrownaslargeasaroom.Computerswereusedinofficesandhomes.Thefirstfamilyofcomputerswasconnectedbyanetwork.Manynewapplicationshavebeenfoundforcomputers.Now:Computersconnectpeopleallovertheworldtogether.While-reading(2):(Universalmachine)While-reading(3):carefulreadingReadthepassageagaincarefullyandfinishEx.2onP19inthestudentbook.Para.1TopicsentenceSupportingdetails▪▪▪▪▪OvertimeIhavebeenchangedquitealot.calculatingmachineanalyticalmachineuniversalmachinePClaptop1.Whycouldyou“think”logicallyandproduceananswerquickerthananyperson?BecauseIwasprogrammedbyanoperatorwhousedcardswithholes.While-reading(3):Para.2TopicsentenceSupportingdetails▪▪▪▪▪ThosechangesonlybecamepossibleasmymemoryimprovedtubestransistorschipsnetworkWorldWideWeb2.Itotallychangedmyshape,becausemymemorywasfirststoredintubes,thenontransistorsandlateronverysmallchips.Itotallychangedmyshape！While-reading(3):Para.3TopicsentenceSupportingdetails▪▪▪▪▪▪▪▪Sincethe1970smanynewapplicationshavebeenfoundforme.communicationsfinancetraderobotsmobilephonesmedicaloperationsspacerocketsprovidealifeofhighquality3.Manynewapplicationshavebeenfoundforme,suchasincommuni-cation/finance/trade/robots/mobileRockets.Careful-reading:phones/medicaloperations/space4.(translation)Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold.随着时间的推移，我的记忆力发展的如此之快，就像一头大象，我从来不会忘记告诉我的任何事情。While-reading(3):Howcomputershavechangedourlives?Brainstormalistofthingsthatyou,yourschoolandyourfamilyusecomputerfor.Discussion:Post-reading:pair-workAdvantages•listentothemusic•seefilms•watchnews•communicatewithfriends•buythingsonlineDisadvantages•playcomputergamestoomuch•chat（聊天）ontheInternettoomuch•littletimetostudy