八年级英语上册 CHAPTER FOUR Computer technology课件（含音频） 牛津深圳版

1、一间半教室大,它由17468个电子管、6万个电阻器、1万个电容器和6千个开关组成， 重达30吨，占地160平方米，耗电174千 瓦，耗资45万美元,monitor,keyboard,mouse,main unit主机,drive,CD-ROM/ DVD-ROM,speakers,flash disk,radio,iron,rice cooker,TV set,electric fan,vacuum cleaner,telephone,washing machine,ice box,air conditioner,camera,computer,/ refrigerator / fridge,m

2、obile phone/ cell phone,Reading,Look at the pictures of a computer below and try to write the correct name of the parts to complete the sentences.,A What do you know about?,monitor,keyboard,mouse,main unit主机,drive,CD-ROM/ DVD-ROM,speakers,flash disk,1. The _ shows words and pictures. 2. We use the _

3、 for typing in information. 3. The _ _ stores information. 4. The _ helps us control the computer. 6. We can hear the sound from the _. 7. We put the _ or _ into the _.,monitor,keyboard,flash disk,mouse,speakers,CD-ROM,DVD-ROM,drives,B Look and think,Look at the titles of the articles and the pictur

4、es on the next page. Then discuss the following statements with a partner and correct any mistakes.,True or False Computers are inside many machines in our homes.( ) 2.can do important jobs like flying planes.( ) 3. Are already cleverer than people.( ),F,some,T,places and spaceships,not,F,while-read

5、ing,Read Hidden helpers and answer : What are “hidden helpers”? Why do we call them “hidden helpers”?,“Hidden helpers” are computers. We call them hidden helpers because sometimes they are inside the machine, we might be unaware of them.,Listen to the recording and fill in the blanks: What kind of j

6、obs can a computer do? Computers can: 1_. 2_ _ and _ . 3 _you and _ _with you. 4 _railways, _ aeroplanes and spaceships.,calculate,type,print,draw,teach,play games,operate,fly,What kind of jobs can a computer do?,1.Is a computer cleverer than human beings? Why?,The answer _ this question is, for the

7、 time being, “_”. Because human beings have _ understanding of the meaning of things _ computers and can _ new ideas.,2.What will happen in the future because of Computers?,One day computers may be able to do more things than a human brain and do them better. Computers will change our lives.,to,No,g

8、reater,than,create,can= be able to 能够,Is a computer cleverer than I am?,C Find the meanings,C1 Find these words and expressions in the passage. Then read the words round them and choose the best meanings.,hardly ever a. sometimes b. seldom c. often 2.tiny a. very important b. very big c. very small

9、3. realize a. allow b. understand c. decide 4. operate a. make something work b. make something stop c. make something grow 5. for the time being in the past b. at present c. in the future 6. raise a. lift up b. put down c. bring to our attention,C1 Find these words and expressions in the articles o

10、n Page45. then read the words around them and choose the best meanings.,C2 Find the words in Column A in the articles. Then read the words around them and choose the meansing from column B.,hidden be unaware of railway type judges,a track with rails on it senior law officers write something with a c

11、omputer, typewriter, etc. d. difficult to see or find e. do not know about,A,B,E Read and think,People often expect you to give examples to explain something. Read the statements below and give examples to support each one. Put one word in each bank.,S1 There may be tiny computers in your home. S2 W

12、here, for example? S1 Inside your _ _, _ or _ _. 2.S1 Computers can do many things. S2 Can you give me some examples? S1 They can _ _ _ and _. 3.S1 Computers can do some important jobs. S2 For example? S1 Computers can _ _ and _ _ and _.,TV set telephone,washing machine,calulate type print,draw,oper

13、ate railways,fly aeroplanes spaceships,4 S1 A human brain can do some things better than a computer. S2 For example? S1 It can _ _ _. 5 S1 In the future, computers may change our lives a lot. S2 For example? S1 We many have _ _ _.,create new ideas,computer doctors computer judges computer teachers,w

14、rite an article about hardly ever=seldom 4. be unaware of be aware of 5. for example such as 6. be dependent on depend on 7. in the world 8. at the moment 9. be fast at doing sth. be good at doing sth.,写一篇关于的文章,几乎没有,没有意识到 意识到,例如,依靠;信赖于,Useful Expressions,世界上,此时；目前,做很快 善长于,10.play games with sb. 11.m

15、ore importantly 12.operate railways 13. fly planes and spaceships 14.for these reasons 15. electronic brains 16. the answer to this question,和一起玩游戏,更重要的是,操控铁路,操控飞机和宇宙飞船,由于这些原因,电子脑,这个问题的答案,Useful Expressions,17. for the time being 18. of ones own 19. be able to do sth. 20. human brain 21. happen to 2

16、2. in the future 23. change our lives 24.have nothing to do 25.make our lives better 26. have great understanding of ,暂时,（属于）某人自己的,能够做,人脑,发生,(在）将来,改变我们的生活,无所事事,Useful Expressions,使我们的生活更好,对有很深的了解,1.Tony collects some information to write an article about computer. 托尼为写一篇关于计算机的文章，收集了一些信息。,information

17、 信息 （不可数名词） If you surf the Internet, you can find _ information there. many B. a number of C. a lot D. much,much/little/a little/ some/any/ a lot of/ lots of/ a deal of /enough/ no可修饰不可 数名词,Importance and Difficulty,2.There are also many tiny, hidden computers in your home, but you might be unaware

18、 of them.在你家里也有微型的、隐藏的计算机，但是 你没有意识到它们。,hidden helpers神秘助手 (hidden是过去分词作定语修饰后面的helpers) a broken cup 一只破怀子 boiled water开水 fallen leaves落叶 be unaware of = dont realize/know没有意识到 反义： be aware of = realize/ know意识到 Some students are unaware of the importance of English learning.,Importance and Difficult

19、y,3.You are more dependent on computers than you realize.你比你意识到的更加依赖计算机。,be dependent on 依赖于 All living things are dependent on the sun. 万物依靠太阳。 翻译：中学生不应该太依赖父母。 Middle school students shouldnt be dependent on their parents too much. 拓展：depend on依靠；依赖 翻译：好的健康依赖于好的食物。 Good health depends on good food.

20、,Importance and Difficulty,4.The answer to this question is, for the time being, NO.目前这个问题的答案是“不”。,the answer to the question 这个问题的答案 (这里要注意介词”to”的固定用法。） 拓展：the key to the door门上的钥匙 the way to the school去学校的路 the entrance to到的入口 the reply to .的回答 但：the ticket for tomorrow明天的票 the homework for today今

21、天的作业,Importance and Difficulty,5.Will computers make our lives better or worse in the future?计算机会使我们将来的生 活更好或更坏？,make our lives better使我们生活更好 此处是”make +宾语宾补（形/名/过去分词“结构 Too much food made him ill. (形容词） We make him our monitor. (名词） I cant make myself understood.(过去分词） 拓展： make sb. do sth.使某人做某事 My

22、mother always makes me _ housework. A. doing B. to do C. do D. done,Importance and Difficulty,Listen to the summary of the text. Fill in the blanks and then recite it.,Workbook P39,In order to write an article about computers, Tony (1)_ some information. Now he knows a lot about (2)_. Not many years

23、 ago, we could (3) _ ever see computers. But now they are everywhere. There are (4) _, hidden computers in your home, but you might be (5)_ of them. Computers can do a lot of things. They are faster at (6)_ than people. They can also type, (7)_ and draw.,collects,computers,hardly,tiny,unaware,calcul

24、ating,print,More importantly, they can (8)_ railways and fly planes and spaceships. For these (9)_, we often call them electronic (10) _. But for the time (11)_, computers are not as clever as (12)_ beings. We have (13)_ understanding of the meaning of things than computers and can also (14)_ new (1

25、5)_ of our own. However, one day computers may be able to do more things than a human brain.,operate,reasons,brains,being,human,greater,create,ideas,Filling in an order form,Mabel Wang is ordering some office products for her company. You are the man from Top Office Supplies. Listen to the recording

26、, and complete the details of Mabels order on the form below. After you finish, work out the grand total.,Listening,fill in an order form填写一张订单表格 pay attention to 注意 product n.产品 quantity n.数量 as quickly as possible 尽可能快 supply n.供应；提供 order n.订单 v.下订单；命令 company n.公司 reference n.标识；编号 ballpoint pen

27、 n.圆珠笔 price n.价格 medium adj.中等的；中号的,useful words and expressions,TOP OFFICE SUPPLIES Company name: _ Customer name: _ Customer No.:_,Hi-Lo Company,Mabel Wang,KY-73620,P- 1961,white,10 boxes,￥30,￥300,C- 4091,keyboard,1,￥190,￥1800,￥2404,C- 4083,office chair,￥1800,1,black,Language,Adjective 形容词,A The

28、comparative of adjectives,When we compare two things, we add er to Short adjectives and use more with long adjectives. We often use than when we compare two things.,Examples: cheap cheaper high higher useful more useful expensive more expensive Books are cheaper than computers. Computers are more ex

29、pensive than books.,形容词的比较级和最高级,B The superlative of adjectives,When we compare two things, we add est to Short adjectives and use most with long adjectives. We usually use the in front of a superlative.,Examples: fast fastest long the longest difficult the most useful interesting the most expensive

30、. Money is valuable. Time is more valuable than time. Water is the most valuable of all.,形容词的比较级和最高级,Liu Xiang is_. Yi Jianlian is _ _Liu Xiang. Yao Ming is _ _of the three.,tall,taller than,the tallest,注意：最高级后面可用in, of, among 等短语来说明比较范围。,America,Russia,America is very_. China is _ _ America. Russia

31、 is _ _ of all.,large,larger than,the largest,jade,diamond,1,000 dollars,500 dollars,10,000 dollars,The jade is very _. The computer is _ _ _ the jade. The diamond is _ _ _ among them.,expensive.,more expensive than,the most expensive,规则变化,形容词比较级和最高级的构成,形容词比较级和最高级的构成,形容词比较级和最高级的构成,C The comparative

32、and superlative of good, bad and far,1.nice-_ - _ 2. thin-_ -_ 3.early-_-_4.hot-_-_ 5.happy-_-_6.easy-_-_ 7.difficult - _ - _ 8. beautiful - _-_ 9.popular - _- _ 10. careful- _-_ 11. good/well - _ - _ 12.bad/ill - _ - _ 13.many/much - _- _ 14. little - _ - _ 15. far - _- _,默出下列形容词的比较级与最高级,nicer nice

33、st,thinner thinnest,earlier earliest,hotter hottest,happier happiest,easier easiest,more difficult most difficult,more beautiful most beautiful,more popular most popular,more careful most careful,better best,worse worst,more most,farther/further farthest/furthest,less least,Complete the sentences wi

34、th the camparative forms of the given adjectives in the box. Add than if necessary.,1.Ava is 18. Her sister is 21. Ava is _ her sister. 2.Lev runs 1 mile in 7 minutes. Doris needs 8 minutes. Doris is _. 3.Annika has a lot of friends. Her brother has only one. Annika is _. 4.John pays $50 for his sho

35、es. His brothers pays $100 for his. Johns brothers buys _ shoes.,younger than,slower,more popular,more expensive,5.Leas room is 20 square metres. Her sisters is 12 square metres. Leas room is _ her sisters. 6.Todd weighs 125 pounds. His brother weighs 110 pounds. Todd is _ his brother. 7. Natalie is

36、 1.55 metres tall. Her sister is 1.6 metres tall. Natalie is _.,larger than,heavier than,shorter,P49A,David is going abroad for the first time and needs to buy a suitcase. He is talking to a salesman in a shop. Use the adjectives in the box to complete their conversation.,Keys: (1) more expensive (2

37、) cheaper (3) heavier (4) lighter (5) bigger (6) smaller,P50B,B1 Pansy is shopping for a camera. Look at the pictures and write the correct letters or the cameras after each statement.,Keys: b (2) a (3)c (4) c,B2 Later, Pansy told Tony about her shopping trip. Complete Pansys sentences with the adje

38、ctives in the box.,Keys: most expensive model ￥3,580 oldest model 2006 lightest model 0.16kg,P50,B3 Work in pairs. S1 asks the questions. S2 gives the answers. Follow the example. Remember to use the with the adjectives.,Examples: (big) Earth, the moon or the sun? S1 Which is the biggest, Earth, the

39、 moon or the sun? S2 The sun is the biggest.,Keys: 1 S1 Which is the smallest, a bee, a butterfly or an ant? S2 The ant is the smallest.,P50,B3 Work in pairs. S1 asks the questions. S2 gives the answers. Follow the example. Remember to use the with the adjectives.,Examples: (big) Earth, the moon or

40、the sun? S1 Which is the biggest, Earth, the moon or the sun? S2 The sun is the biggest.,Keys: 1 S1 Which is the smallest, a bee, a butterfly or an ant? S2 The ant is the smallest.,P51,2 S1 Which is the largest, the Atlantic, the Pacific or the Indian Ocean? S2 The Pacific is the largest. 3 S1 Which

41、 is the most valuable, iron, silver or gold? S2 Gold is the most valuable. 4 S1 Which is the hottest, the North Pole, the South Pole or the Gobi Desert? S2 The Gobi Desert is the hottest. 5 S1 Which is the heaviest, a bear, a whale or an elephant? S2 A whale is the heaviest. 6 S1 Which is the fastes

42、t, a rocket, a plane or a train. S2 A rocket is the fastest.,P51 C,Look at the school record below and work in pairs. S1 asks questions about it, with the correct form Of the adjectives in brackets. S2 replies.,Keys: 3. has the worst marks; Pauline 4. has better marks; Daisy 5. has better marks; Ali

43、ce 6. has the worst marks; Eric 7. farther; Belindas 8. the farthest; Eric,形容词,比较级的 基本句型,拓展：形容词比较级的基本句型,1.AB或AB（比） Im much taller than my father. Tom is more careful than his elder brother. 2.A B C或A B C(最） Mary is the tallest girl in her class. This is the most difficult of the three. 3.A=B(和一样） Th

44、is exercise is as easy as that one. Tom is as tall as John. 4.AB(不如) Our classroom isnt as/so clean as yours. Tom is not so/as tall as John.,拓展：形容词比较级的基本句型,5.最之一 Shanghai is one of the biggest cities in the world. My brother is one of the best students in his school. 6.more and more (越来越) It is getting darker and da