Chapter 4 computer technology

1. Chapter 4 computer technology

2. How many electric machines are there in your home ? Questions: What kind of machines uses computers? Do you have a computer at home ? Is it useful ? What do you do with the computer?

3. OUTLINE Listening Reading Language Speaking Writing More practice

4. Step1: Reading Read Part A and Band circle the new words ,then try to find out the meanings of them.

5. CD-ROM DVD-ROM monitor flash disk drives speakers main unit mouse keyboard

6. Vocabulary: • The _________shows words and pictures. 2. We use the__________ for typing in information. 3. The ____ _____ stores information. 4. The_________ helps us control the computer. monitor keyboard flash disk mouse

7. Vocabulary: 5.We can hear the sound from the _________. 6. We put the__________or_________into the _______ . speakers CD-ROM DVD-ROM drives

8. B Find the facts: Computers… 1. may be inside some machines in our homes. 2.can do important jobs like flying planes. 3. are already cleverer than people. not cleverer

9. Reading There are three short texts typical of information leaflets or newspaper or magazine articles in this part. Listen to the tape and try to tell the main idea of each paragraph.

10. NEW WORDS AND EXPRESSIONS: 1. tiny adj. small 2. hide v. hidden 3. be unaware of– not knowing about e.g. The student was unaware of his mistakes. 4. probably– adv. maybe; perhaps 5. calculator--n. small electronic device

11. NEW WORDS AND EXPRESSIONS: 6. dependent—adj. needing someone or something. depend ----v. 依赖;依靠 (on) e.g. You should not be dependent on your parents all the time. 7. realize--- v. notice; know about e.g. I did not realize you were right. 8. rarely--adv. not often ;seldom 9. diagram-- n. a line drawing that shows how sth. works.

12. NEW WORDS AND EXPRESSIONS: 10.graph–line or lines showing the variation. 11. importantly --- adv. (adj. important) 12. operate ---v. control, keep running --- operation n. 手术 13. otherwise ---conj. if not; if conditions were different 14. essential –adj. necessary; most important

13. NEW WORDS AND EXPRESSIONS: 15. for the time being--- (adv. Phr.) 16. create —v. produce; make 17. judge—n. a senior law officer 18.raise—v. mention sth. for people 19.in one’s opinion 按照某人的意见 20. hardly never 几乎不，难得

14. Answer the following questions 1.What do we call computers sometimes? Electronic brains 2. Do computers operate railways? Yes, they can

15. Answer the following questions 3. Is a computer cleverer than I am ? The answer to this question is, for the time being, “No”…. create new ideas. …than doctors, judges and teachers…. This raises…

16. 常见计算机术语

17. Page 46 Find the meanings

18. C1 • Hardly ever A. sometimes B. seldom C. often 2. tiny A. very important B. very big C. very small 3. realize A. allow B. understand C. decide

19. C1 4. operate A. make sth. work B. make sth. Work C. make sth. work 5. for the time being A. in the past B. at present C. in the future 6. raise A. lift up B. put down C. bring to our attention

20. C2 A B • Hidden a. A truck with rails on it. 2. Be unware of b. senior law officer 3. Railway c. write sth. With a computer ,typewriter . 4. type d. Difficult to see or find 5. judges e. do not know about

21. Page 47 Read and think

22. D • S1 There may be tiny computers in your home. S2 Where, for example? S1 Inside your _________, ________ or _______ _________. telephone TV set washing machine 2. S1 Computers can do many things. S2 Can you give me some examples? S1 Computers can________,_______ __________and _________. calculate type print draw

23. D 3. S1 Computers can do some important jobs. S2 For example? S1 They can ________ ________,_______ _________and _________. Operate railways fly planes spaceships 4. S1 A human brain can do some things better than a computer. S2 For example? S1 It can ________ __________ _________. Creat new ideas

24. 5. S1 In future, computers may change our lives a lot. S2 For example? S1 We may have ___________ __________ ___________ nothing to do

25. 比较 such as 和 for example用法 Notes:

26. Step2: listening Listen to the recording, and complete the details of Mabel’s order on Page 22. Useful words in this part: ballpoint pen 圆珠笔　 screen filter 显示屏 office chair 办公椅　

27. TOP OFFICE SUPPLIES Hi-Lo Company Company name:______________________ Customer name:______________________ Customer No.:________________________ Mabel Wang KY-73620

28. 10 boxes ¥30 ¥300 P-1961 white 1 ¥190 C-4091 keyboard office chair ¥1800 C-4083 black 1 ¥1800 ¥2404

29. ( P49) Step 3 Language The comparative ＆superlative of adjectives

30. I am tall … than you. I am tall. er

31. = be 形容词/副词 原级 + + + Ａ as + as + B 动词 > be 形容词/副词 比较级 + + + Ａ + B than 动词

32. 副词 最高级 + + + + Ａ 动词 in/ of 范围 + 形容词/副词 比较级 any other 单数 be Ａ + + + + than + the other 复数 动词 > > 形容词 最高级 + + Ａ + + + be the in/ of 范围

33. 形容词或副词比较级和最高级的变化规则 直接加-er、-est。如small—smaller smallest 去词尾不发音的e，加-er、-est。 　　　　如wide—wider widest 　　重读闭音节词结尾，且词尾只有一个辅音字母的， 双写该辅音字母，加-er、-est。 如：big—bigger biggest 以辅音字母+y结尾的，变y为i，加-er、-est。如easy—easier easiest, early—earlier earliest 一般双音节和多音节的形容词或副词直接在该单词前加单词 more most构成其比较级和最高级， 如polite—more polite most polite, politely—more politely most politely

34. 不规则变化的形容词或副词

35. 形容词比较级和最高级的 用法 1.包含形容词比较级的句子多带有一个由than引起的状从句，表示和什么相比，从句中有些词会省略掉： She is taller than her elder sister. 她比她姐姐高。 This book is in simpler English than the other one. 这本书的英文比另一本容易。 Life was much harder than it is today. 那时的生活比现在苦得多。 2.有时状语从句可以省略： The weather is warmer today. 今天天气要暖和得多。 Are you feeling better now? 现在你感觉好一点了吗？ I’ll be more careful in future. 以后我要细心点。 3.在表示“和…一样…”时，可用“as... as”结构(前面的as后要用原形)： He is as busy as before. 他还是和以前一样忙。

36. 4.比较级前可以用表示程度的数量词，倍数，百分数等，用作状语。4.比较级前可以用表示程度的数量词，倍数，百分数等，用作状语。 I’m a head taller than you. 我比你高一头。 This desk is two feet longer than that one. 这张桌子比你的那张长两尺。 Our room is twice as large yours. 我们的房间比你们的大两倍。 5.形容词比较级前加much, even, still, far, a little, lot等，加强语气。 This is better by far. 这好得多。 6.比较级＋and＋比较级，表示“越来越。。。。。。”the+比较级， the+比较级，表示“越。。。。，就越。。。。” Our country is getting stronger and stronger. 我们国家变得越来越强大了。 The farther a thing is, the smaller it looks. 一件物体越远，看起来就越小。

37. Practice

38. 在空格中填入所给形容词的适当形式： 1.She is two year ____________ than me. She’s the ____________ girl in our class. (young) 2. Bill is __________ than Tom. He’s the __________ of the three children. (old) 3.John is the ______________ boy in the class. (clever) 4.Cairo is the ___________________ city in Egypt. (big) 5.Her bicycle is _________________ than mine. (good) 6.My cold is _______ today than it was yesterday. (bad) 7.Tokyo is ______ from Beijing than from Shanghai. (far) 8.This question is ________ than the other one. (simple) 9.This street is ________ than Beijing Road. It’s actually the ___________street in the whole city. (narrow) 10.It is __________ in Hong Kong than in Kunming. (hot) younger youngest older oldest cleverest biggest better worse farther simpler narrower narrowest hotter

39. 把下面句子译为汉语： • The town has more than 7,000 people. • They spend more and more money on food. • She looked no more than sixteen. • I saw a tiny man, less than six inches high. • I found myself less and less interested in chemistry. • The smaller the house is, the less it will cost to heat. 这个城镇的人数有7，000多人。 他们花费在食物上的钱越来越多。 这个城镇的人数有7，000多人。 我看见一个小个子男人，他的身高不到六英尺。 我发现我对化学越来越没有兴趣了。 房间越小，所花费的取暖费越少。

40. 1.The air in Beijing is getting much _______ now than a few years ago. A. clean B. cleaner C. cleanest D. the cleanest 2.Amy makes fewer mistakes than Frank. She does her homework _________. A. more carefully B. more carelessly C. more careful D. more careless

41. 3.--Who gets up ________, your father or your mother ? --My mother. A.early B. earlier C. earliest 4.---Which do you like _________? ---I prefer this one. A. well B. best C. good D. better 5.The busier he is, the _______ he feels. A. happily B. happy C. happier D. more happy

42. 6. The population in the world is larger and larger. I don’t think food will be _______. A. less expensive B. much expensive C. more expensiveD. a little bit expensive 7. Sorry, I took your MP3 by mistake. I’ll be ______ careful next time. A. most B. more C. much 8．Ivan would like to have _______ car. He hates repairing his car so often. A. good B. better C. a better D. best

43. 9.---How are you today, Francis? ---Much _______, but my doctor says I’ll still have to rest for another few days. A. well B. good C. better D. best 10. Allen spent _______ time and made ______ sentences than Tony. A. fewer; more B. less; more C. much; many D. more; many 11.Of all the ball games, I like baseball _____. It’s really my favourite. A. well B. good C. better D. best

44. More Practice A1 David is going abroad for the first time and needs to buy a suitcase. He is talking to a salesman in a shop. Complete the conversation.

45. expensive light cheap heavy big small Salesman : Can I help you, sir ? David: Yes, I need a suitcase. Can you tell me about these two ? The red one costs ¥2500. Why is it (1) _______ than the black one ? Salesman: Because it’s made of leather, sir. The black one is made of plastic. So the black one is (2) _________ than the red one. Leather always costs more. David: I see. more expensive cheaper

46. expensive light cheap heavy big small Salesman: But on a plane, you must think about the weight. The red suitcase is (3) ______than the black one. You try them, sir. David: Oh, you’re right. The black one is much (4) _______ than the red one. But is it very strong? Salesman: Yes, it’s quite strong. It will last for years. And look at the size too, sir. The black one is (5) ______ than the red one. David: Yes. The red one is (6) ______ than the black one. That’s true. … heavier lighter bigger smaller

47. a b c B1 ¥2,330 made in 2007 0.21 kg 110*60*41mm ¥3,580 made in 2008 0.23 kg 114*62.5*43 mm ¥1,368 made in 2006 0.16 kg 110*67*42mm b • This is the smallest model._____ • 2.This is the4 most expensive model.__ 3. This is the oldest model.____ 4. This is the lightest model.____ a c c B1

48. ¥368 made in 2005 0.16 kg 110*67*42mm B2 ¥1580 made in 2007 0.23 kg 114*62.5*43 mm ¥880 made in 2006 0.23 kg 117*64.4*53.8 mm ¥880 made in 2006 0.23 kg 117*63*47mm ¥1330 made in 2006 0.21 kg 110*60*41 mm most expensive model ¥ 3,580 • The _______________costs _________. • The _____________was made in ______. • The _____________weighs ________. oldest model 2006 lightest model 0.16 kg

49. Example: (big) Earth, the moon or the sun ? S1: Which is the biggest, Earth, the moon or the sun ? S2: The sun is the biggest. B3 1.(small) a bee, a butterfly or a mosquito? 2.(large)the Atlantic, the Pacific or the Indian Ocean? 3.(valuable)iron,silver or gold? 4.(hot)the North Pole, the South Pole or the Gobi Desert? 5.(heavy)a bear, a whale or an elephant? 6.(senior) a policeman, an inspector or a chief inspector? 7.(fast)a rocket, a plane or a train?

50. Record Class__________ C