1. LOGO www.themegallery.com Unit 4 What High Technology Has Brought

2. Text A Contents Lead — in Text B

3. Leading In 1.How much do you know about Hi-tech products? 2.List the hi-tech products in daily use

5. Discuss the questions 1.Talk about the advantages and disadvantages of hi-tech products: 2.What would life be like if these hi-tech products had not been invented ?

6. Background about the computer In 1946, the University of Pennsylvania in USA produced the first computer – ENIAC. It took up to180 sq.m and weighed 30tons.Now,computers have taken several significant technical revolutions and they have been advancing rapidly. They are easy to carry and the speed of the CPU is 10 million times faster than it was in 1946. Therefore, it is obvious that the main trends of computer development are ‘getting smaller’ and ‘enhancing speed’. computers have embedded into our lives and most fields cannot research without them. In other words, computer affect on human progress.

7. Find out the advantages of the computer in groups: The computer is very useful, but if we can’t make a good use of it. It will be bad for us. Find out what you should not do on the computer with your friends on the paper. I. Find out what you should not do on the computer:_____________ 1. do word processing 2. surf the Internet 3. listen to music 4. spend too much time on the computer games 5. send emails 6. do online shopping 7. download bad information 8. make a home page 9. visit bad web sites

8. 10. program computers 11. keep in touch with friends 12. spend too much time chatting with net-pals 13. pay little attention to lessons 14. waste a lot of time online Find out the advantages and disadvantages of the computer: Advantages:_____________________________ Disadvantages:____________________________ 1. It’s bad for our eyes if we spend too much time on the computer. 2. The computer can help us do our schoolwork

9. 3. Computers make it easy to keep in touch with each other. 4 We’ll make friends with bad people if we chat with strangers on the Internet. 5. It’s hard to do with too much information. 6. There is much information of all subjects. 7. It can broaden our minds. 8. Children’s schoolwork will be poor if they are very interested in computer games. 9. It can enrich our knowledge. 10. Some of us may find bad information on the Internet. 11. Some will pay little attention to real life. 12. It makes our life easier than before. Ask the students to add more about advantages and disadvantages

10. Text A The Computer Is down Pre-reading activities: Group Working: What does the Internet mean to you? Read Text A and try to do the exercises on page 61

11. Language Points: 1. down: adj. Our computers have been down for a few hours.( not in operation) 2. go about: He is going about with his girlfriend now. ( go around) We must go about our work now. ( perform or do ) 3. allow: ( permit) The government does not allow smoking in public. 4. issue: vt..( produce) The government has issued new guidelines on tax reform. Food will be issued to the hungry people. ( give out) n. She’s not really concerned about this issue. ( a subject to be talked about ) 5. counter: n. ( table ) One of the bank workers pressed a button behind the counter.

12. 6. go down with: Many students have gone down with the flu. ( catch an infectious disease) 7. put: vt. I don’t know how to put my ideas into English. ( express something in words) 8. backup: n. A backup pilot / PC backup software 9. doubt: n. I have no doubt that he can fix your tape recorder. I doubt whether I can solve the problem. 10. No ( not )---without We cannot survive without water. They don’t meet without quarrel.

13. 11. receipt: We should ask for a receipt when we pay for what we have bought. 12. proof: n. Do you have any proof to show you are very capable? The police confronted him with proof of his criminal activities. 13. charge: v. How much does the hotel charge for a room? ( ask in payment) The policeman was charged with neglect of duty.( accuse) n. The members in this club can attend any courses, free of charge. 14. fare: n. There’s been an increase in air- fares since then. ( price)

14. Vocabulary Practice I. Choose the best item to complete each of the following sentences. 1.They ______me fifty dollars for fixing the computer. A. cost B. took C. charged D. spent 2. The word _______that a new model of cell phones would soon come onto the market. A. communicated B. issued C. spoke D. spread 3. As she read the letter, her eyes were ________with tears. A. filled B. full C. came D. crowed 4. They won’t ________ their children to watch TV after 8 o’clock. A. let B. allow C. leave D. suggest 5. The tickets for the show were ________ to the students and teachers of the school. A. issued B. charged C. written D. bought

15. 6. In learning English, many students ________ an e-dictionary to a traditional paper one. A. like B. expect C. prefer D. respect 7. ________ the child if he cries, and he will soon stop. A. Ignore B. Restrict C. Adjust D. Forget 8. There is no ________ that he has paid for the ticket. A. realty B. reason C. information D. proof 9. She gave______ her job to look after her sick mother. A. up B. with C. on D. off 10. Although they graduated many years ago, they still keep in contact ______ each other. A. in B. on C. with D. from

16. II. Complete each sentence with the correct form of the word given. 1.I got the ( feel )_____ that you’d never let me down. 2.Health without riches is (prefer)_______ to riches without health. 3.We all think that the government’s ( restrict) ________ on the selling of weapons is reasonable. 4.The city was cut off from (communicate) ________ with the outside world because the power went out. 5.The park was filled with people (talk) _______ on their cell phones. 6.( obvious) ________, the writer doesn’t want to e-mail people if they live near him. 7.It’s ( frighten) ________ to think the accident could happen again. 8.By this time, there were quite a few people ( stand) ________ in line. 9.Living in a city sometimes( restrict) ________ a child’s freedom. 10.In this city, playing football in the streets is not( allow )________.

17. Ⅳ. Practical Writing Write notes based on the information given. To: Professor Wang From: Wu Jin Time: 上午八点十分, 星期五 message: 今天下午两点去你办公室. 如有变化, 请及时通知 Friday ————— Dear Professor Wang, ____________________________________________________________ _______________________________________________________________——————————————————————————————————— Wu Jin

18. To: Wang Hai From: Chen Bin Message: 我能借您的 用几天吗 ? 请放在我的办公桌上, 谢谢. Dear Wang Hai, _______________________________________________ _________________________________________________ Chen Bin