1、Unit 3,Computers,Can you give us the English names of a computer components (組件)? Tips: 1. We can use a computer to 2. It is made up of some parts, such as,keyboard 鍵盤(pán),mouse 鼠標(biāo),monitor 顯示器,screen 屏幕,speaker 音響,host 主機(jī),components of a computer,main board (主板),CPU (central processing unit)中央處理器,RAM (隨

2、機(jī)存儲(chǔ)器) (Random Access Memory ),What is it in English?,Power supply (電源),What is it in English?,display card 顯卡,What is it in English?,screen keyboard mouse monitor DVD-ROM hard disk,1. the part of the computer that looks like a television 2. the part of the monitor that you look at 3. something you u

3、se to click on things (files, etc.) 4. the part of the computer that you type on 5. the part of a computer that stores information 6. the part of computer that we can put a CD in,Match,Computer and Internet,type my homework,draw pictures,play games,communicate with my friends.,gather information for

4、 my lessons,listen to music,watch movies,Do you think the computer really helps to your study? Why?,I think that In my opinion I believe that I agree because I disagree because,Giving an opinion:,Make good use of it but never get trapped by it.,Conclusion There is no doubt that computer has two side

5、s, too. If 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.,WHO AM I?,Reading,I am very old now. I was born in China. Many people used me for calculating(計(jì)算)in the past, but no

6、w I am a bit lonely because they dont like me now. Do you know who I am?,abacus,Riddles (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?,calculator,I am very big. Scientists use me to solve some mathemat

7、ical problems.,huge computer,Do you know who I am?,PC Personal Computer,Im a small, relatively inexpensive computer designed for an individual user. Im based on the microprocessor technology. At home, people use me to surf the Internet and play games. Do you know who I am?,I can be used for calculat

8、ing. 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. Do you know who I am?,laptop,robot,Im a machine that works automatically. I can do a wide variety of tasks, especiall

9、y suitable for doing jobs too boring, difficult, or dangerous for human beings. Do you know who I am?,PDA,abacus,calculator,huge computer,PC,laptop,Whats next?,Can you tell the development of computers?,robot,Skimming to get general ideas,1. Who is the speaker in this story?,2. Whats the main idea o

10、f this passage? A. The development of computers. B. The development and use of computers. C. A machine which is simple-minded. D. Computers may replace human beings.,A computer.,Skimming,Reading Comprehension I,Look at these inventions. Can you put them in an order according to the time when they ap

11、peared?,( ) analytical machine ( ) laptop ( ) calculating machine ( ) robot ( ) PC ( ) universal machine,1,2,3,4,5,6,Skimming,Reading Comprehension II,Careful reading,These changes only became possible as my memory improved. Since the 1970s many new applications have been found for me. Over time I h

12、ave been changed quite a lot.,Para 1:,Para 2:,Para 3:,Match the main ideas and the paragraphs.,Scanning to get detail information,1. My real father was Charles Babbage, who wrote a book and built me in 1936. 2. After I got my new transistors in the 1960s, I became smaller but cleverer and quicker. 3

13、. I was brought into peoples homes in the 1970s. 4. Since my birth I have been built to take the place of the human race.,True or False,Scanning,Reading Comprehension III,5. I began as a calculating machine in Japan in 1642. 6. In 1936, I grew rapidly both in size and in brainpower. 7. As time went

14、by, I was made bigger. 8. Since the 1970s many new applications have been found for me.,Scanning,1. Who was the first person to make the earliest computer? A. Alan Turing. B. Charles Babbage. C. Charles Turing. D. Alan Babbage. 2. When was the “universal machine” built? A. In 1822. B. In 1642. C. In

15、 1936. D. In 1970.,Scanning,Reading Comprehension IV,3. When was the computer the biggest? A. In 1642. B. In 1936. C. In the 1940s. D. In the 1970s. 4. How old is the computer? A. About 170 years old. B. About 270 years old. C. About 370 years old D. About 470 years old.,Scanning,5. Which of the fol

16、lowing is in the right order of time? The computer was connected with other computers. b. Alan Turing wrote a book about the computer. c. The computer has been sent to explore the Moon and Mars. d. The computer began to simplify difficult sums. A. a. b. c. d. B. b. c. a. d. C. d. a. c. b. D. d. b. a

17、. c.,Scanning,The computer began as a calculating machine,1936,The computer grew rapidly both in size and in brainpower.,Finish the timeline below.,Scanning,Reading Comprehension V,1960s,Computers were used in offices and homes.,Computers connect people all over the world together.,The computer had

18、grown as large as a room.,The history of computers,the second generation (1956-1963),the third generation (1964-1971),the fourth generation(1971- ),the first generation (1945-1956),Complete the chart below.,Scanning,Reading Comprehension VI,Brainstorm a list of things that you, your school and your

19、family use computers for. Think about what you would have to do if you could not use computers any more.,Discussion,palmtop,smaller desktop,convenient laptop,What are todays smaller computers like?,virtual keyboards 虛擬鍵盤(pán),nose-top keyboard-vest,What can we do by computer in the future? 2. What can th

20、e future computer be like?,You are given a chance to design a computer for yourself. Draw a picture about it and describe (描述) what functions it has. You will be asked to introduce (介紹) your computer. (appearance &functions),Group work,Debate,What are advantages and disadvantages of computers?,1. Ea

21、ch side has four students (debaters). 2. The first student states your viewpoint. 3. Then move onto the free talk part. 4. The last student concludes your opinion with some sentences.,Rules for debating,Quiz,Retell the text by filling the following blanks.,I began as a _ _ in 1642 in France. In 1822

22、 I was built as an _ _. Then in 1936 Alan Turing wrote a book and built a _ _. As the years have gone by, I have been made _ and _ but I became _ and _.,Quiz I,In 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. Sinc

23、e my _ I have truly been built to serve the _ _.,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 years have gone by, I have been made _ and _ but I became _ and _.,calculating machine,analytical machine,machine,Answer:,

24、universal,smaller,smaller,cleverer,quicker,In 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 built to serve the _ _.,network,1960s,Internet,human,race,offices,homes,birth,Translation,Qu

25、iz II,他不用功, 結(jié)果考試不及格。 2. 專(zhuān)家們正在勘查這個(gè)島的各個(gè)部分。 3. 這種新型的電腦是專(zhuān)為老師和學(xué)生設(shè)計(jì)的。,He didnt work hard, as a result he failed his exam.,The experts are exploring every part of the island.,This new type of computer has been specially designed for teachers and students.,1. I got caught in the rain and my suit_. (2007 北京卷) A. has ruined B. had ruined C. has been ruined D. had been ruined,Quiz III,高考鏈接,2. I have got a headache. No wonder. Y