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《高中英语pep英语必修2课件_UNIT 3 Computers warming up.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、Book2Unit3ComputerswarmingupWordsaboutcomputersHistoryofdevelopmentofcomputersComparisonamongabacus,calculator,PCandPDASpeakingpracticeSummaryontheadvantagesanddisadvantagesofusingacomputerIamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabit
2、lonelybecausetheydon’tlikemenow.DoyouknowwhoIam?abacusGuess:Part1wordsIamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?calculatorItisamachine,whichyoucanusetotypeyourhomework,drawpictures,playgames,watchmovie
3、s,listentomusic,communicatewithyourfriends,gatherinformation…WhoamI?ComputerPCitisakindofcomputerwhichcanbetakenconveniently(方便地)likeanotebook.AlaptopCPU(centralprocessingUnit)中央处理器harddisc硬盘chips主板displaycard显卡monitor显示器keyboard键盘mouse鼠标modemScanner扫描仪printerSpeaker音箱CD
4、/DVD/VCDCD/DVD-ROM光盘驱动器ComponentsofacomputerScannerPrinterMonitorMouseSpeaker内存RandomAccessMemory重置电脑组件Whatdotheyhaveincommon?共同点What’snext?abacuscalculatorHugecomputerdesktoplaptopPDARobotPart2HistoryDiscussionandcompetitionUsewordsphrasestoexpresstheadvantages(优点)anddi
5、sadvantages(缺点)ofabacus,calculator,PC,andPDA.(用单词,词组来表达abacus,calculator,PC,PDA的优点,缺点)discussion3’+writing5’Part3ComparisonAbacusAdvantages:fast,traditional,convenient,simpleDisadvantages:toosimpleCalculatorAdvantages:accurate(准确的),convenient,convenienttocarry,moreuseful,
6、hasmorefunctions,likecos,sin,log,etcDisadvantages:peoplewillrelyonittoomuchPCAdvantages:personal,popular,faster,intelligent,moreusefulusagesfunctions,(surfingtheInternet,lookingforinformation,drawpictures…)Disadvantages:toobigtocarry,expensive,skillful(itrequirespeoples
7、houldknowhowtouseacomputer)PDAAdvantages:compact(小巧的),useful,portable(轻便的,方便携带的),convenienttocarryDisadvantages:thescreenistoosmall,itneedsbattery(电池),….losedata(数据)….SpeakingpracticeIfyoudecidetodesign(设计)yourownhouse,whichonedoyouliketousetohelpyour?abacus,calculator,PC
8、,PDA?Giveyourreasons?Part4SummaryDiscusstheadvantagesanddisadvantagesofusingacomputerwithyourpar
