下载 初中英语 牛津版 八年级上 第三单元阅读课A教学课件

1、8Unit 3 Modern machines Reading: Computers Pre-reading: Brain-storming What can a computer do?8play gamescalculatetypedraw pictures?printplay video/music8 First-reading2. What kind of jobs can a computer do?Computers are probably the best calculators in the world. They are faster at calculating than

2、 people, and they rarely give wrong answers. They can also type, print and draw things like diagrams and graphs. They can teach you many things and also play games with you. More importantly, they can operate railways (like the underground) and fly planes and spaceships. For these reasons, we someti

3、mes call them “electronic brains. typeprintdrawplay gamesWhat else can a computer do?calculatingRead Passage 2 quickly and find out. (1.5 min)More importantly, computers can operate railways and fly plane and spaceships.2. What kind of jobs can a computer do?Computers are probably the best calculato

4、rs in the world. They are faster at calculating than people, and they rarely give wrong answers. Notes:rarely: not often, seldom They can also type, print and draw things like diagrams and graphs. They can teach you many things and also play games with you. More importantly, they can operate railway

5、s and fly planes and spaceships. For these reasons, we sometimes call them “electronic brains. Computers can also draw: 曲线图、坐标、图表数学图解diagramgraph8Work in pairs. Read Passage 2 & 3 quickly and find out the examples - Ex.A3 (P35) (3 min)2. What kind of jobs can a computer do?Computers are probably the

6、 best calculators in the world. They are faster at calculating than people, and they rarely give wrong answers. They can also type, print and draw things like diagrams and graphs. They can teach you many things and also play games with you. More importantly, they can operate railways and fly planes

7、and spaceships. For these reasons, we sometimes call them “electronic brains. 3. Is a computer cleverer than I am?The answer to this question is, for the time being, “No. You have greater understanding of the meaning of things than computers and can also create new ideas of your own. However, one da

8、y computers may be able to do more things than a human brain. In the future, they may even be better at doing their jobs than doctors, judges and teachers.This raises interesting questions. How will computers change our lives? Will we have nothing to do? Will computers make our lives better or worse

9、 in the future? Second-reading8Ex.A3 Give examples (P35)2. S1 Computers can draw things. S2 For example? S1 They can draw _ and _.3. S1 Computers can do some important jobs. S2 For example? S1 They can _ _and _ _ and _.diagramsgraphsoperateflyrailwaysplanesspaceships8 S1 A human brain can do some th

10、ings better than a computer. S2 For example? S1 The brain can _ _ _. S1 In the future, computers may do some jobs better than people. S2 What jobs, for example? S1 They may be better at doing jobs than _,_ and _. createnewEx.A3 Give examples (P35)ideasdoctorsjudgesteachers a judge -a person who deci

11、des things in a court of law法官8Look and think:What makes them work? Computers inside make them work. But you might be unaware of them. (not notice 不觉察的)8What are the “hidden helpers, according to the text?2. What does “hidden mean here?3. Do you have any hidden helpers in your homes?4. Is a computer

12、 cleverer than human beings? Why/ Why not?Read Passage1 & 3 and think (3 min): Third-reading81. Hidden helpersNot so many years ago, you hardly ever saw computers. Now they seem to be everywhere.There are also many hidden “computers in your home, but you might be unaware of them. For example, there

13、may be one inside your TV set, telephone or washing machine. You are more dependent on computers than you know. Third-readingRead and think: Questions:1. What are the “hidden helpers, according to the text?2. What does “hidden mean here?3. Do you have any hidden helpers in your homes?Notes: be unawa

14、re of: 没意识到,不知道 be dependent on: 依靠,依赖 hardly: almost not 几乎不8 Third-readingRead and think: Is a computer cleverer than human beings? Why/ Why not?3. Is a computer cleverer than I am?The answer to this question is, for the time being, “No. You have greater understanding of the meaning of things than

15、 computers and can also create new ideas of your own. However, one day computers may be able to do more things than a human brain. In the future, they may even be better at doing their jobs than doctors, judges and teachers.This raises interesting questions. How will computers change our lives? Will

16、 we have nothing to do? Will computers make our lives better or worse in the future? 81. Read fast and get the main idea for each passage. Passage1: _ Topic sentence:Passage2:_ Reading BB2 More information about computers How to give a computer instructions?What can CD-ROMs or DVD-ROMs do?We give a

17、computer instructions by putting different programs into it.8Read B2 again and do T or F: ( )1. Its essential for programmers not to make mistakes. ( )2. Programmers use the same language to write different programs. ( )3. Computer language are so easy that everyone can understand them. ( )4. A DVD-

18、ROM can hold plenty of infor- mation, including pictures and sounds. FTTF Reading B8 Post-reading Look back to Reading A & B:What are these passages in common? The main idea for each passage in Reading A:Passage1: _ Passage2:_Passage3:_There are many hidden computers in your home.Computers can do a

19、lot of things.Is a computer cleverer than human beings?8 Post-reading Look back to Reading A & B:3. How to give supporting information? Lets draw the outline for the passages. Main idea (topic sentence) Supporting information _Passage1: _ _ _ There are many hidden computers in your home.-be unaware

20、of-for example-be more dependent on84. Group workcomplete the outlines: Post-reading Main idea (topic sentence) Supporting information _Passage( ): _ _ _ _ 5. Group work Now its your turn to write a short passage about computers. First decide your topic. eg: surf the internet, an e-mail box Bill Gates 5. Group work Then you can begin to write down your outline. Main idea (topic sentence) Supporting information _ _ _ _ _ 8Homework Finish writing the information about computers. 2. Complete