高中英语人教版必修二uni3Reading.ppt

Unit3Computers Guessinggame Guess Atoy Ahandbag Computers keyboard mouse monitor screen speaker hostcomputer WhatEnglishwordsdoyouknowaboutcomputers Iamveryoldnow IwasborninChina Manypeopleusedmeforcalculatinginthepast butnowIamabitlonelybecausetheydon tlikemenow DoyouknowwhoIam abacus Guessmore Iamverysmall Icanbeusedforcalculating InChina alotofstudentsusemewhensolvingmathematicalproblems DoyouknowwhoIam calculator Icanbeusedforcalculating Besides IcanalsobeusedforwatchingDVD sendinge mailandcommunicatingthroughtheInternet However IamnotaPC becauseI msmallenoughforyoutotakemewithyou notebookcomputer laptop DoyouknowwhoIam Ahugecomputer PC thehistoryofthecomputer PDA calculator abacus laptop Writeoutallthewordsyouknowaboutcomputers computer monitor click software search update download Internet keyboard WhoamI Skimming Gooverthestorytofindoutwhothespeakeris Writedown3sentencestosupportyouridea IwasabletosharemyknowledgewithothersthroughtheWorldWideWeb MyrealfatherwasAlanTuring IwasbuiltasanAnalyticalMachinebyCharlesBabbage Timeline Thecomputerbeganasacalculatingmachine Thecomputergrewrapidlybothinsizeandinbrainpower Thecomputerhadgrownaslargeasaroom 1960s Computerswereusedinofficesandhomes Computersconnectpeopleallovertheworldtogether 1642 1822 TheAnalyticalMachinewasmadebyCharlesBabbage 1936 1940s Thefirstfamilyofcomputerswasconnectedtoeachother 1970s Now Scanning OvertimeIhavebeenchangedquitealot CalculatingmachineAnalyticalmachineUniversalmachinePClaptop Thesechangesonlybecamepossibleasmymemoryimproved TubesTransistorsChipsNetworkWorldwideweb Sincethe1970smanynewapplicationshavebeenfoundforme CommunicationsFinanceTradeRobotsMobilephonesMedicaloperationsSpacerocketsProvidingalifeofhighquality calculating analytical cardswithholes universalmachine memory laptop theearly1960s share network ways Task5QUESTION ANSWERCOMPETITION WhatisPC Speakthenameonthewhole Itmeans personalcomputer 2 WhatisIT InformationTechnology 3 WhatisPDA Personaldigitalassistant 4 WhatisW W W Worldwideweb 5 科学技术 Scienceandtechnology 6 人工智能 Artificialintelligence 7 笔记本电脑 Notebookcomputer 8 Whowasthecomputers realfather AlanTuring Whataretheadvantagesanddisadvantagesofthecomputers Inmyopinion Icanusethecomputerto Discussion Wecanusethecomputerto listentomusic Watchmovies searchfor communicatewith doshopping AdvantagesWecanusethecompuersto 1 useacomputerforschoolwork2 playgamesonthecomputer3 sendemailstofriends4 downloadmusicandfilms5 goshoppingonline6 useQQmunicatewithothers 8 usetheInternettosearchforinformation9 surfthewebforfun10 readnewsbothathomeandabroad readbooksandmagazines DisadvantagesSomestudentsmaygettooaddicted 沉溺于 toit Somestudentswastetoomuchtimeinplayingcomputergames Somestudentsspendtoomuchtimeinchattingwithothersandmaybecheated 欺骗 bysomeoneonline Asaresult theyhavelittletimetostudyItisbadforoureyesandhealthtospendlongtimeinfrontofcomputers Howusefulcomputersare Internet Computershavegreatpower Theymakeourlivesmorecolorfulandmoreconvenient BUTDon tjustusecomputersforfun Don tspendtoomuchtimeinplayingcomputergamesorchatting 聊天 online Weshouldlearnmorecomputerskillswhichareveryusefulinourfuturework Summaryaboutthetext Thecomputer acalculatingmachinein1642 thenin1822 itwasbuiltasan by Attheyearof1936 AlanTuring todescribehowcomputers towork andbuilda universalmachine tosolve Withthedevelopmentof beganas AnalyticalMachine CharlesBabbage wroteabook couldbemade mathematicalproblem informationtechnology inthe1960s computershadnew andbecame thenwereconnectedtoeachotherby Astheyearshad computerswere people shomes Nowcomputershavebecomethemostimportant to allovertheworldt