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1、 Unit 3 Modern machinesA guessing gameBrainstormingCan you name some electric machinesradioironelectric fanrice cookerTV setvacuum cleanerwashing machineice box / refrigerator / fridgeair conditionercameracomputertelephoneBefore you read about computers, look at the pictures below and try to write t
2、he names to complete the sentences.A What do you know about?monitormain unitspeakermousekeyboardmicro-phonefloppy diskCD-ROM drive / DVD-ROM drivedrive1. The _ shows words and pictures. 2. You use the _ for typing in information. 3. The _ _ records information. 4. The _ helps you control the compute
3、r. 5. The _ _ contains all the computerselectronics. 6. We can hear the sound from the _. 7. We put _ into the _ in the main unit.monitor keyboardfloppy disk mousemain unitspeakers CDsCD-ROMLets learn some technical words associated with computers:l PCl laptopl viruspersonal computersmall, portable
4、personal computersomething which gets into a program and damages itl datal filel networkinformationa collection of data stored togethera system that links two or more computers togetherl softwarel hardwarelcommandprogramsthe monitor, keyboard, drives, etc.an order to the computerl e-maill modemlmult
5、imediaelectronic maila device which links the computer to the telephone systema combination of sound, moving pictures and text2. unaware of (adj.) P2l not knowing aboute.g. The student was unaware of his mistake.1. hardly ever (adv.) P1l almost nevere.g. We hardly ever get frost in Shenzhen.3. depen
6、dent (adj.) P2l needing someone or somethinge.g. You should not be dependent on your parents all the time.4. realize (v.) P2l notice; know aboute.g. I didnt realize you were going to leave.5. rarely (adv.) P3l not often; seldome.g. People rarely eat snakes in the UK.6. diagram (n.) P3l a line drawin
7、g that shows how something workse.g. Science books contain a lot of diagrams.7. operate (v.) P3l control; keep runninge.g. How do you operate this new recorder?8. essential (adj.) P4l very important; necessarye.g. Water is essential for life.9. for the time being P5l for now and some time into the f
8、uture; temporarilye.g. Your salary will be 5,000 yuan a month for the time being.10. judge (n.) P5l a senior law officere.g. The judges put the criminals in jail.11. raise (v.) P6l mention something for people to discuss or to deal withe.g. The report raises questions about law and order in our city
9、.B B Find the factsFind the factsRead Tonys information about computers and correct the wrong statements.Computers 1.may be inside some machines in our homes.2.can do unimportant jobs like flying spaceships.3.can do tasks according to the programs.4. at present are cleverer than people.importantnot
10、clevererHidden helpersThe use of computers has spread very quickly. There are small computers inside everyday appliances in your home.What kind of jobs can a computer do?Computers are electronic brains. They can perform many functions, calculate and even control railway systems.How do we give a comp
11、uter instructions?Computers are given instructions by means of programs.Is a computer cleverer than I am?At present, the human brain is superior to the computer, as it has greater understanding, but this may change. If computers can do some of our jobs better than we can, how will our lives change?C
12、DsMany of todays computers use CDs, which can hold huge amounts of information and also pictures and sound.1. plan to do sth.2. write an article about 3. hardly ever4. be unaware of 5. be dependent on 6. play games with sb.计划做某事写一篇关于的文章几乎没有没有意识到依赖和某人一起玩游戏7. fly aeroplanes and spaceships8. electronic
13、 brains9. put into 10. write computer programs11. make mistakes12. the answer to this question驾驶飞机和宇宙飞船 电子脑将放进编电脑程序犯错误这个问题的答案13. for the time being 14. be able to do sth. 15. human brain 16. happen to 17. make lives better 18. floppy disk 19. for example 20. a famous person in history暂时 能够做某事 人脑 发生在
14、 使生活更加美好 软盘 例如一位历史名人C C Find the meaningsFind the meaningsC1 Find these words and expressions in the passage. Then read the words round them and choose the best meanings.1. hardly ever 2. a. sometimes b. seldom c. often 3.2. depend on 4. a. need b. trust c. play with 5.3. realize 6. a. allow b. unde
15、rstand c. decide 7.4. rarely 8. a. often b. sometimes c. seldom 9.5. essentiala. very dangerous b. very safe c. very necessary 6. containa. prevent b. remove c. includebabcccC2 Find the words in Column A in the passage and then read the words round them. Match them with the meanings in Column B.AB1.
16、be unaware of2. tiny3. diagrams4. operate5. for the time being6. judges7. raisesa.make (it) workb. people who make legal decisions c. very smalld. at presente. brings to our attentionf. do not know aboutg. simple drawingsfcgadbeD D Read and thinkRead and thinkPeople often expect you to give examples to explain something. Read the statements below and on page 47 and give exa
