高中英語(yǔ) Unit3 Computers課件 新人教版必修2

A PC( personal computer)A notebook computerI 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. Do you know who I am?Do you know who I am?abacusRiddles(謎語(yǔ)謎語(yǔ)):I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems. Do you know who I am?Do you know who I am?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 / laptopDo you know who I am?Do you know who I am?Riddles(謎語(yǔ)謎語(yǔ)):A huge computerA PCPDA / Palmtop Discussion what can we use computer to do? Work out a list and compare it with your partner.Internetsend emailsplay gamescommunicate with my friends.gather information for my lessonslisten to musicwatch moviesdo shopping onlineReadingWho am I ?Pictures and wordsPictures and words1243561. monitor 2. screen 3. CD-ROM4. mouse 5. keyboard 6. hard diskLabel each partthe main device that a computer uses to store information.the part of a computer that stores information1.modem2.scanner3.printer4.chips5.CPU53124device linking a computer with a telephone line.1.Who is the teller of the story?2.What does the passage mainly talk about?Computer.It talks about the history and the applications (Use) of computers.Skimming: Listen to the tape and answer the following questions.3. In which order is the text organized?TimeTimeline1642:_1822:The Analytical Machine was made by Charles Babbage._: _ _1940s: _:The first family of computers was connected to each other.1970s:_Now:_ _The computer began as a calculating machineThe computer grew rapidly both in size and in brainpower.Computers were used in offices and homesComputers connect people all over the world together.1936The computer had grown as large as a room.1960sPARA. 1 Topic sentence: Supporting details: Over time I have changed quite a lot.calculating machineanalytical machineuniversal machinePClaptopa huge computerPARA. 2 Topic sentence: Supporting details: tubes These changes only became possible as my memory improved.transistorschipsnetworkWorld Wide Webintelligent but lonelyPARA. 3 Topic sentence: Supporting details: communications finance Since the 1970s many new applications have been found for me.traderobotsmobile phonesmedical operationsspace rockets providing a life of high qualityHow did computer change in its size, intelligence, speed, function? And how about peoples opinion?Size: Intelligence:Speed:Function:Peoples opinion:smallerquickerclevererdealing with , communicating withclever & usefulcalculatingsimple-mindedvirtual keyboards 虛擬鍵盤(pán)虛擬鍵盤(pán)Nose-topkeyboard-vest1.What can the future computer be like?2.What can we do by computer in the future?DiscussionYou are given a chance to design a computer for yourself.Draw a picture about it and describe(描述描述) what functions it has.You will be asked to introduce(介紹介紹) your computer. (appearance &functions)