人教版 必修二 unit3 Computers warming up.ppt

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1、Unit3ComputersPeriod1WarmingupAtoy?Ahandbag?ComputersRiddles(谜语):Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculating计算inthepast,butnowIamabitlonelybecausetheydon’tlikemenow.DoyouknowwhoIam?abacus算盘Riddles(谜语):Iamverysmall.Icanbeusedforcalculating.I

2、nChina,alotofstudentsusemewhensolvingmathematical数学的problems.DoyouknowwhoIam?calculatorRiddles(谜语):Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutot

3、akemewithyou.notebookcomputerDoyouknowwhoIam?Riddles(谜语):AhugecomputerAPCthehistoryofthecomputerPalmtop掌上电脑Howmuchdoyouknowaboutacomputer???GivetheEnglishnameofthefollowingpicturesofthecomputercomponents(组件)WhatisitinEnglish??Mainboard(主板)WhatisitinEnglish?

4、?CPU(centralprocessingUnit)中央处理器WhatisitinEnglish??harddisc硬盘WhatisitinEnglish??Keyboard(键盘)WhatisitinEnglish??Monitor显示器screenWhatisitinEnglish??mouse鼠标DVDROMHeavy!Difficult!Hard!Tired!Easy!Fast!Free!keyboardmousemonitorscreenspeakerhostcomputer主机cameramon

5、itorscreenmousekeyboardharddiskDVD-ROM(1)thepartofthecomputerthatlookslikeatelevision.(2)thepartofthemonitorthatyoulookat.(3)somethingyouusetoclickonthings(files,etc.)(4)thepartofthecomputerthatyoutypeon.(5)thepartofacomputerthatstoresinformation.(6)Thepart

6、ofcomputerthatwecanputaCDin.WorkoutthenamesWriteoutallthewordsyouknowaboutcomputers.computermonitorclicksoftwaresearchupdatedownloadInternetkeyboardWhatdotheyhaveincommon?anabacusacalculatoradesktopanotebookcomputeralaptopdigitalcameraarobot(Whatdotheyhavei

7、ncommon?)Ithinkthat…Inmyopinion…Ibelievethat…What’syourreason?Whydoyouthinkso?1.Theycanbeusedforcalculating.2.Theycandealwithmathsproblems.3.Theyareourfriends.4.Theyareusefulandhelpful.DiscussionworkforusinMars(火星)What’snext?carrythingsworkinwars(战斗)仿真机器人en

8、tertainment娱乐Whatdoyouthinkwillbethenextdevelopment?CD--DVD-ROM---DVDRWCRTmonitor彩色显示器LCDmonitor液晶显示器CPUharddisc硬盘chips/motherboard主板somehardware硬件:keyboardmouseModem调制调解器Scanner扫描仪Printer打印机Speaker音响f