人教版高中英语 必修二 Unit3 《ComputersReading》 (共34张PPT).ppt

1、Lets play a guessing game!ks5uI 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?abacusRiddles(谜语):/bks/PDA(掌上电脑）Personal Digital Assistant I am so small in size that I can fit in your hand.I usually

2、have a small screen but bigger than a digital phone,however smaller than the smallest laptop,I can store telephone numbers,access the internet,make calculations,and so on.who am I?I am very small.I can be used for calculating.In China,a lot of students use me when solving mathematical problems.who a

3、m I?calculatorRiddles(谜语):/klkjlet/I am very big.Scientists use me to solve some mathematical problems.huge computerwho am I?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 f

4、or you to take me with you.laptop who am I?Riddles(谜语):/lptp/robotIm a machine that works automatically.I can do a wide variety of tasks,especially suitable for doing jobs too boring,difficult,or dangerous for human beings.who am I?/rbt/PC(个人电脑）PDA(掌上电脑）abacus(算盘）laptop(手提电脑）calculator(计算器）huge comp

5、uterrobotThe history of the computerWhat do they have in common?1.They can be used for calculating.2.They can deal with math problems.3.They are our friends.4.They are useful and helpful.search for informationsee movieslisten to musicread books and magazinessend emails to friendsdownload music and f

6、ilmsshopping onlineplay games on the computerdraw pictureslook at photographs on the computerchat online1.Who is the speaker in this story?2.Whats the main idea of this passage A.The development of computers.B.The development and usage of computers.C.A machine which is simple-minded.D.Computers may

7、replace human beings.A computer.Skimming3.Find out the topic sentence of each paragraph and underline themPara11.Topic sentenceOver time I have been changed quite a lotScanning:Scanning:Para1 Fill in the chart with the information in para 1.1822calculatingSimplifylogicallyuniversalUsed in offices an

8、d homesSince the 1970sIt was considered a technological revolution and the start of the artificial intelligence.I have changed a lot from a calculating machine to an analytical machine.I can do many things as human race.RealityPara2 1.Topic sentenceThese changes only become possible asmy memory impr

9、ovedks5uScanning:Para2 1.My shape didnt change even though my memory improved.2.The older I am,the larger I have become.3.Over time I have been very easy to forget things because I dont develop enough memory.4.I was able to share my knowledge with others through the World Wide Web in the early 1960s

10、.T or F QuestionsFFFTFirst it was stored in tubes,then ontransistors and later on very small chips.Until in the early 1960s they gave me a family connected by a network.As I have grown older I have also grown smaller.My memory has developed so much that,like an elephant,I never forget anything I hav

11、e been told!.Para 3 1.Topic sentenceSince the 1970s many new applicationshave been found for me.Scanning:Para3 What are the new applications of the computer?CommunicationFinancemobile phonesTrademedical operationspace rocketsrobotsWhat role do computers play in the life of human beings?Scanning:Para

12、3 They provide humans with a life of high quality.They are devoted friends and helpers of the human race.Questions and Answers In what ways have computer been changed?Further Understandingsizeshape speedbrainpower/memoryapplicationrelationship with human racelarge smaller faster and faster more and

13、more developedused in more and more fieldscloser and closerFill the blanks:I began as a _ machine in 1642 in France.In 1822 I was built as an _ machine.Then in 1936 Alan Turing wrote a book and built a _ machine.As the years have_,I have been made _.Over time my memory has developed so much that,lik

14、e_,I never forget anything I have been told!And my memory became _ large _ I couldnt believe it.In the 1960s they gave me a family_ by a network.I was able to _with others through the World Wide Web.Since the 1970s many new applications _for me.calculating analyticaluniversalgone bysmaller thatconne

15、ctedhave been foundshare my knowledgeso an elephantWhen she was a high school student she was interested in English.At that time her English was not better,but she never gave up.Over time she was determined to work hard at it.As time went by she had made great progress because of her hard work.By th

16、e time she was in senior 3 her dream had come true.As a result she became a college student.Nowshe becomes a air hostess,she will work on the plane.My students storyHomeworkSuppose your group is a computer company.Design a future-computer and then advertise it to your customer.Design a personal comp

17、uter.A future-computershapepriceapplicationscolorcomponentsDiscussionFor example:This is the new computer designed by our company.It is very small and transparent(透明的).You can even put it into your pocket.(shape/color)It has a free-internet in it.You can (applications/functions)It only costs you .(price)Useful words and expressions