新人教必修二 Unit3 Computers-Warming up and Pre-reading

Unit3ComputersPeriod1WarmingupThewholeclasswillbedividedintofourgroups,andeachgroupsendastudenttostandbeforetheplatform,whoguesswhattheobjectisandtherestofthegroupmatescanonlydosomemovementstolethisorhergrouprepresentativeguesswhattheobjectisandthegroupmateswhoguesstheobjectmustusethefollowingexpressions:Iamamachinewhichisagoodhelperindoinghousework.Iwashclothesforpeople.WhoamI?Riddles(谜语):washingmachine•Amachinethatyouusetotalktootherpeopleeveninafar-awayplace.•Weareconnectedbywireorradio.•Noweachofusoftenhasanumber.WhoamI?Riddles(谜语):telephoneWiththisyoucanwatchdifferentprogrammersjustathome.I’mamachinethathasascreenwithmovingpicturesandsounds.Butwatchingmetoomuchisbadforyoureyes.WhoamI?Riddles(谜语):TVsetIamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tlikemenow.WhoamI?abacusRiddles(谜语):Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.WhoamI?calculatorRiddles(谜语):Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.notebookcomputerWhoamI?Riddles(谜语):DiscussionIsitveryimportanttolearncomputerskillsforus?Whyorwhynot?Usethefollowingexpressioninyourdiscussion.Ithinkthat……Inmyopinion…Ibelievethat…What’syourreason?Whydoyouthinkso?ComponentsofacomputerScannerPrinterMonitorFloppyDiskMouseSpeakerHowmuchdoyouknowaboutacomputer???GivetheEnglishnameofthefollowingpicturesofthecomputercomponents(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??CRTdisplay（CathodeRayTube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?ComputerandInternettypemyhomeworkdrawpicturesplaygamescommunicatewithmyfriends.gatherinformationformylessonslistentomusicwatchmovies……UseTypingShoppingCalculatingTranslatingPlayinggamesCommunicatingSearchinginformationEditingmultimediadocumentsNowadays,whatdoesacomputermeantoyou?Ausefulmachine?Awiseexpert?Aclosefriend?Youcanusetheseexpressionsinyourpresentation:Ithinkthat…Inmyopinion…Ibelievethat…Iagree/disagreebecause…Computershavegreatpower.Theymakeourlivesmorecolorfulandmoreconvenient.BUTDon’tforgetthatcomputersaremoderntoolswhichcan’ttaketheplaceofrealpeople.Neverignorethepeoplebesideyouorevenfaraway.commonadj.普通的,共同的,常见的incommon共同的,共有的,共用的havenothingincommonhavelittleincommonhavesomethingincommonhavealotincommonYouknow,Dorothy,youandIhaveonethingincommon.WejusthadnothingincommonandIcouldn’tcommunicatewithhisdullbusinessfriends.Isuddenlyfeltwehadalotincommon.