高中英语必修2·Unit3·Computers

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1、Guess!ComputersUnit3ComputersIamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tlikemenow.DoyouknowwhoIam?abacus/'æbəkəs/算盘warming-upIamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingma

2、thematicalproblems.DoyouknowwhoIam?calculator/'kælkjʊleɪtə/计算器Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.notebookcomputerlaptop/'læptɒp/笔

3、记本DoyouknowwhoIam?whatdotheyhaveincommon?calculatingpre-readingtheusageofcopmuterscaculatingplaygamescommunicatewatchvideoscoursewareWhoamI?lookatthistitleandthesetwopictureswhatisthispassagegoingtotalkaboutSkimming(4min):Gooverthestorytofindoutwhothespeakeris.Itis

4、acomputer1642TheAnalyticalMachinewasmadebyCharlesBabbage.19361940sThefirstfamilyofcomputerswasconnectedtoeachother.1970snowTimelineThecomputerbeganasacalculatingmachine．1842AlanTuringwroteabooktodescribehowcomputerscouldbemadetowork．Computershadgrownaslargeasaroom.

5、1960sComputerswereusedinofficesandhomes．Computersconnectpeopleallovertheworldtogether.Scanning:Inwhichorderisthetextorganized?TrueorFalseandyourreasonAlanTuringbuiltanAnalyticalMachinetosolveanymathematicalproblems.Peoplebegantorealizethatthecomputergotclevererandq

6、uickerwithtimepassing.Thecomputerbegantoservethehumanracesinceitwasbroughtintopeople’shomes.4.Thelargerthecomputeris,themorememoryithas.FTFFCompletethechartbelow.Para-graph1Para-graph2Para-graph3TopicsentenceSupportingdetailstubescommunica-tionsfinanceScanningReadi

7、ngComprehensionParagraph1TopicsentenceSupportingdetailsOvertimeIhavebeenchangedquitealot.1calculatingmachine2analyticalmachine3universalmachine4PC5laptopParagraph2TopicsentenceSupportingdetailsThesechangesonlybecamepossibleasmymemoryimproved.1tubes2transistors3chip

8、s4network5WorldWideWebParagraph3TopicsentenceSupportingdetailsSincethe1970smanynewapplicationshavebeenfoundforme.1communications2finance3trade4ro