2. my English class Welcome to rosa309

4. 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 don’t like me now. Do you know who I am? abacus Guessing Game:

5. 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 I’m small enough for you to take me with you. A notebook computer Do you know who I am?

6. 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

7. A huge computer I am built to solve some mathematical problems. But I am too big. Do you know who I am?

8. I can be used as a laptop, however, I am not a laptop, because I’m small enough for you to hold me in your hand. Do you know who I am? PDA (personal digital assistant)

9. A PC personal computer I am the common computer which can solve all kinds of problems and is used widely now. Do you know who I am?

10. Who am I ?

11. Work in a group of three. Try to put these inventions in an order according to the time when they appeared. ( ) analytical machine ( ) laptop ( ) calculating machine ( ) robot ( ) PC ( ) universal machine Pre-reading(P17)

12. Read the passage quickly and check your prediction. Was it correct? ( ) analytical machine ( ) laptop ( ) calculating machine ( ) robot ( ) PC ( ) universal machine Pre-reading(P17) 2 5 1 6 4 3

13. Task 1 Skimming 1. Who is the speaker in this story? A computer. 2. What’s the main idea of the text? A. The computer wants to find “who he is”. B. The function( 功能 ) of the computer. C. The computer becomes popular around the world. D. The change and the applications of the computer. A tip: The key words in the text may help you to summarize the main idea of the text.

14. 1642 1822The analytical machine was made by Charles Babbage. 1936 The computer began as a calculating machine ． The computer grew rapidly both in size and in brainpower. Task 2 : read the passage again and finish the timetable on P19.

15. 1940s The first family of computers was connected to each other. 1970s now Computers had grown as large as a room. 1960s Computers were used in offices and homes. Computers connect people all over the world together.

16. 1642 1822 Now 1936 1960s 1970s The computer began as a calculating machine. The analytical machine was built by Charles Babbage. Alan Turing wrote a book about how computers could be made to work as a universal machine. The first family of computers was connected to each other. Computers were used in offices and homes. The history of the computer: 1940s The computer had grown as large as a room. Timeline (What happened?)

17. Read the passage again. Find the topic sentence of each paragraph and the supporting details. Paragraph 1: Over time I have been changed quite a lot. 1. calculating machine 2. analytical machine 3. universal machine 4. laptop Task 3

18. Paragraph 2: These changes only became possible as my memory improved. 1. tubes 2. transistors 3. chips 4. network 5. World Wide Web

19. Paragraph 3:Since the 1970s many new applications have been found for me. 1. communications 2. finance 3. trade 4. robots 5. mobile phones 6. medical operations 7. space rockets 8. providing a life of high quality

20. Summary A topic sentence sets out the main idea of a paragraph. A topic sentence is usually the first or last sentence of a paragraph.

21. Task 4: Listen to the tape and decide whether they are true or false. 1.Alan Turing built an Analytical Machine to solve any mathematical problems. 2.People began to realize that the computer got cleverer and quicker with time passing. 3.The computer began to serve the human race since it was brought into people ’ s homes. 4.Since the 1970s, the computer was used by people around the world through the Internet. 5. The larger the computer is, the more memory it has. F T F T F Charles Babbage its birth The memory of computers has no relationship with their size.

22. Task 5 : Cloze test （ fill in the blanks orally) 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 time ___ ___, I was made_______. These changes because my _____ _______. In the 1960s they gave me a family____ __ __ _____. Now people call it the World Wide Web. I have been _____ ____ ____ ___ since the 1970s.So I became PC. I’m happy to become a devoted friend and helper of the human race. calculating machine analytical machine universal machine went by connected by a network used in offices and homes smaller memory improved

23. Guess! A toy? A handbag?

24. Suppose you were a computer designer. How do you design your computer ? What would you like it to look like? What are some of the things you would like it to do? What’s your dreamy computer? How much does it cost? Post-reading Discussion An example: Well, I’d like to design my computer in this way. Since I like dogs very much, I will make it the shape of a dog. Every morning, I’d like it to wake me up and fetch me what I ask it to take. Then it will go to school with me and carry my bag for me. Maybe at least it will cost 2,000 yuan, but it’s worth it.

25. Homework Finish the Ex2 and Ex3 in Learning about Language on page 20.