新人教必修二_Unit3_Computers-Warming_up_and_Pre-reading.ppt

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1、Unit3ComputersPeriod1WarmingupguessinggameThewholeclasswillbedividedintofourgroups,andeachgroupsendastudenttostandbeforetheplatform,whoguesswhattheobjectisandtherestofthegroupmatescanonlydosomemovementstolethisorhergrouprepresentativeguesswhattheobjectisandthegroupmateswhoguesstheobjectmustusethe

2、followingexpressions:Iamamachinewhichisagoodhelperindoinghousework.Iwashclothesforpeople.WhoamI?Riddles(谜语):washingmachineAmachinethatyouusetotalktootherpeopleeveninafar-awayplace.Weareconnectedbywireorradio.Noweachofusoftenhasanumber.WhoamI?Riddles(谜语):telephoneWiththisyoucanwatchdifferentprogra

3、mmersjustathome.I’mamachinethathasascreenwithmovingpicturesandsounds.Butwatchingmetoomuchisbadforyoureyes.WhoamI?Riddles(谜语):TVsetIamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tlikemenow.WhoamI?abacusRiddles(谜语):Iamverysmall.Icanbeusedforc

4、alculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.WhoamI?calculatorRiddles(谜语):Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.notebookcomputerWhoamI?Ridd

5、les(谜语):DiscussionIsitveryimportanttolearncomputerskillsforus?Whyorwhynot?Usethefollowingexpressioninyourdiscussion.Ithinkthat……Inmyopinion…Ibelievethat…What’syourreason?Whydoyouthinkso?ComponentsofacomputerScannerPrinterMonitorFloppyDiskMouseSpeakerHowmuchdoyouknowaboutacomputer???GivetheEnglish

6、nameofthefollowingpicturesofthecomputercomponents(组件)WhatisitinEnglish??Mainboard(主板)WhatisitinEnglish??CPU(centralprocessingUnit)中央处理器WhatisitinEnglish??RAM(随机存储器)(RandomAccessMemory)WhatisitinEnglish??harddisc硬盘WhatisitinEnglish??Keyboard(键盘)WhatisitinEnglish??Powersupply(电源)WhatisitinEnglish??

7、CRTdisplay（Cathode Ray Tube阴极射线管）纯平显示器WhatisitinEnglish??mouse鼠标WhatisitinEnglish??displaycard显卡DVDROMDigitalVersatileDiscReadOnlyMemory数字通用光盘WhatcanwedoonacomputerandthroughtheInternet?ComputerandInternettypemyhomewor