人教版高中英语必修二课件：Unit3Computers-Reading

1、WHO AM I?ReadingUnit 3 ComputersA toy?A handbag?Computers导PDAabacuscalculatorhuge computerPClaptopWhats next?Can you tell the development of computers?robot1. Who is the speaker in this story? 2. Whats the main idea of this passage? This passage mainly talks about the _ of computers.A computer.Skimm

2、ingReading Comprehension I思histroy/developmentPara 1:Para 2:Para 3:3.Underline the topic sentence of each paragraph.Over time I have been changed quite a lot.These changes only became possible as my memory improved.Since the 1970s many new applications have been found for me.Careful reading 议展评1. Wh

3、o really invented the computer? A. Alan Babbage. B. Charles Babbage. C. Charles Turing. D. Alan TuringWhich is true?A. In 1642 I began as a calculating machine and could solve any mathematical problem.B. My real father was Charles Babbage, who wrote a book and build me in 1936.C.Since the 1970s,I ha

4、ve become very important in communication,finance and trade.D.Since my birth I have been built to take the place of human race.Task1 Choose the best answer.DC1642_The analytical machine was made by Charles Babbage.The computer began as a calculating machine1936The computer grew rapidly both in size

5、and in brainpower.ScanningTask2 Finish the timeline below.18221940sThe first family of computers was connected to each other.1970s 1960sComputers were used in offices and homes.Computers connect people all over the world together.The computer had grown as large as a room.Nowchangememoy_ Task3 Fill i

6、n the blanks. poor_ Name Function(功能)a caculating machine _difficult sumsa _ machine think _a _ machine solve difficult3. _ large Tubes, _ Small chips _ communication; _;_; robots; mobile phones; _; space rockets narrow_analyticaluniversalmathematical problemstransistorsfinancetradeapplicationsmedic

7、al operationsstrongsmallwidesimplify logically What are the advantages and disadvantages of computers? Should high school students surf the internet(上网)?Task4 DiscussionHelp to do homeworkPlay computer gamesDo shoppingListen to music. Send e-mailsSearch information See moviesLearn computer skills Ch

8、atEntertainmentI often use a computer to I sometimes use it to and I never use it to advantages we cancommunicate with friends listen to the music see films & watch news play games do shopping save a lot of time do a lot of useful things Disadvantages Some people especially the teenagers abandon (沉迷

9、于) themselves to the computer games and chatting on the Internet. As a result, they have little time to study . There is unhealthy informaion on the net. You may lose your private information. Some people use the computer wrongly. ConclusionThere is no doubt that the computer has two sides ,too. If

10、we make good use of it, it will make our lives more colorful and convenient. But dont lose yourself in playing computers. Just remember: Keep fit, study well and work hard.I began as a _ _ in 1642 in France. In 1822 I was built as an_ _. Then in 1936 Alan Turing wrote a book and built a _ _. As the

11、years have gone by, I have been made _ and _ but I became _ and _. calculating machineanalytical machinemachine检:universalsmallersmallerclevererquickerIn the _ they gave me a family connected by a _. Now people call it the _. I have been used in _ and _ since the 1970s. So I became PC. Since my _ I have truly been