广东省广州市工作英语《unit3 computers warming up》课件（新人教必修2）.ppt

book2unit3computerswarmingup,wordsaboutcomputershistoryofdevelopmentofcomputerscomparisonamongabacus,calculator,pcandpdaspeakingpracticesummaryontheadvantagesanddisadvantagesofusingacomputer,iamveryoldnow.iwasborninchina.manypeopleusedmeforcalculatinginthepast,butnowiamabitlonelybecausetheydontlikemenow.doyouknowwhoiam?,abacus,guess:,part1words,iamverysmall.icanbeusedforcalculating.inchina,alotofstudentsusemewhensolvingmathematicalproblems.doyouknowwhoiam?,calculator,itisamachine,whichyoucanusetotypeyourhomework,drawpictures,playgames,watchmovies,listentomusic,communicatewithyourfriends,gatherinformationwhoami?,computerpc,itisakindofcomputerwhichcanbetakenconveniently(方便地)likeanotebook.,alaptop,cpu(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,modem,scanner扫描仪,printer,speaker音箱,cd/dvd/vcd,cd/dvd-rom,光盘驱动器,componentsofacomputer,scanner,printer,monitor,mouse,speaker,内存randomaccessmemory,重置,电脑组件,whatdotheyhaveincommon?共同点,whatsnext?,abacus,calculator,hugecomputer,desktop,laptop,pda,robot,part2history,discussionandcompetition,usewordsphrasestoexpresstheadvantages(优点)anddisadvantages(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,part3comparison,abacusadvantages:fast,traditional,convenient,simpledisadvantages:toosimplecalculatoradvantages:accurate(准确的),convenient,convenienttocarry,moreuseful,hasmorefunctions,likecos,sin,log,etcdisadvantages:peoplewillrelyonittoomuch,pcadvantages:personal,popular,faster,intelligent,moreusefulusagesfunctions,(surfingtheinternet,lookingforinformation,drawpictures)disadvantages:toobigtocarry,expensive,skillful(itrequirespeopleshouldknowhowtouseacomputer),pdaadvantages:compact(小巧的),useful,portable(轻便的,方便携带的),convenienttocarrydisadvantages:thescreenistoosmall,itneedsbattery(电池),.losedata(数据).,speakingpractice,ifyoudecidetodesign(设计)yourownhouse,whichonedoyouliketousetohelpyour?abacus,calculator,pc,pda?giveyourreasons?,part4,summary,discusstheadvantagesanddisadvantagesofusingacomputerwithyourpartner?,part5,advantages:1.surftheimunicatewithothersonline4.makefriendsallovertheworld5.makefreecallsthroughqq6.watchfilms,videos.7.drawpictures8.usephotoshoptomakeyourphotosmorebeautiful,disadvantages:1badinformation2badforourhealth,games.badforourstudy5.reducethetimeforrealfriendsa