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

Unit3ComputersUnit3ComputersPeriod1Period1WarmingupWarmingupThe whole class will be divided into four groups,and each group send a student to stand before the platform,who guess what the object is and the rest of the group mates can only do some movements to let his or her group representative guess what the object is and the group mates who guess the object must use the following expressions:I am a machine which is a good helper in doing house work.I wash clothes for people.Who am I?Who am I?Riddles(謎語(yǔ)謎語(yǔ)):washing machine A machine that you use to talk to other people even in a far-away place.We are connected by wire or radio.Now each of us often has a number.Who am I?Who am I?Riddles(謎語(yǔ)謎語(yǔ)):telephoneWith this you can watch different programmers just at home.Im a machine that has a screen with moving pictures and sounds.But watching me too much is bad for your eyes.Who am I?Who am I?Riddles(謎語(yǔ)謎語(yǔ)):TV set I am very old now.I was born in China.Many people used me for calculating in the past,but now I am a bit lonely because they dont like me now.Who am I?Who am I?abacusRiddles(謎語(yǔ)謎語(yǔ)):Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematical problems.Who am I?Who am I?calculatorRiddles(謎語(yǔ)謎語(yǔ)):I can be used for calculating.Besides,I can also be used for watching DVD,sending e-mail and communicating through the Internet.However,I am not a PC,because Im small enough for you to take me with you.notebook computerWho am I?Who am I?Riddles(謎語(yǔ)謎語(yǔ)):DiscussionDiscussionIsitveryimportanttolearncomputerskillsforus?Whyorwhynot?Usethefollowingexpressioninyourdiscussion.IthinkthatInmyopinionIbelievethatWhatsyourreason?Whydoyouthinkso?Components of a computerScannerScannerPrinterPrinterMonitorMonitorFloppy Floppy DiskDiskMouseMouseSpeakerSpeakerHowmuchdoyouknowaboutacomputer?GivetheEnglishnameofthefollowingpicturesofthecomputercomponents(組件組件)WhatisitinEnglish?Mainboard(主板主板)WhatisitinEnglish?CPU(centralprocessingUnit)中央處理器中央處理器WhatisitinEnglish?RAM(隨機(jī)存儲(chǔ)器隨機(jī)存儲(chǔ)器)(RandomAccessMemory)WhatisitinEnglish?harddisc硬盤(pán)硬盤(pán)WhatisitinEnglish?Keyboard(鍵盤(pán)鍵盤(pán))WhatisitinEnglish?Powersupply(電源電源)WhatisitinEnglish?CRTdisplay（CathodeRayTube陰陰極射線管）極射線管）純平顯示器純平顯示器WhatisitinEnglish?mouse鼠標(biāo)鼠標(biāo)WhatisitinEnglish?displaycard顯卡顯卡DVDROMDigitalVersatile DiscReadOnlyMemory 數(shù)字通用光盤(pán)數(shù)字通用光盤(pán) What can we do on a computer and through the Internet?Computer and Internet typemyhomeworkdrawpicturesplaygamescommunicatewithmyfriends.gatherinformationformylessonslistentomusicwatchmoviesUseTypingShoppingCalculatingTranslating Playing games CommunicatingSearching informationEditing multimedia documentsNowadays,what does a computer mean to you?A useful machine?A wise expert?A close friend?You can use these expressions in your presentation:I think that In my opinion I believe that I agree/disagree because Computers have great power.They make our lives more colorful and more convenient.BUT Dont forget that computers are modern tools which cant take the place of real people.Never ignore the people beside you or even far mon adj.普通的普通的,共同的共同的,常見(jiàn)的常見(jiàn)的in common共同的共同的,共有的共有的,共用的共用的have nothing in commonhave little in commonhave something in commonhave a lot in commonYou know,Dorothy,you and I have one thing in common.We just had nothing in common and I couldnt communicate with his dull business friends.I suddenly felt we had a lot in common.