Unit 4 Topic 3 Section C 教案.doc

Unit 4 Amazing ScienceTopic 3 Section C教案Teaching aims and demands 1. Master some new words and phrases: doubt, no doubt, tiny, cancel, connect, for instance2. Go on learning the usage of object complement:A. At the same time, they have made the workplace safer and letter.B. Computers have made the world smaller, like a “village”.3. Improve the students reading skill. 4. Discuss the uses of the computers. Teaching aids 卡片/投影仪Teaching PlanStep 1 Review教师出示投影片：东方时空面对面独家访谈电脑的应用，让两组学生表演Section A、B中的对话，复习以前学过的知识，为本课中的计算机知识和网络知识作铺垫。T: We have learned something about spaceship. Can you act out the dialog in Section A 1a?S1、2、3:We can. T: What about Section B 1a?S4、5:We want to have a try. T: Please. T: Now, please answer the questions. 教师提问Section A、B中所设问题，复习以前学过的知识。T: (1) Is a spaceship controlled by computers?(2) Is it important to master the computer technology?(3) What can computers do during a space trip?学生一个接一个回答问题，教师给予适当补充，引入新课。T: Good! Computers control the speed and the direction during a spaceships flight in space. They can also fix tiny mistakes and cancel wrong orders, etc. There is no doubt that computers are useful during the space trip. Step 2 Presentation 1.教师呈现以下问题，让学生根据自己的了解进行回答。(1) Do the computers play an important role during the space flight?(2) What can computers and the Internet do in our daily life?(3) Can we work on computers too long? Why?学生能回答一些问题，但不一定全面，教师建议学生带着这些问题，阅读1a。提高学生的阅读能力。T: Please read the passage and try to find out the answers to the questions. 学生阅读后，可与同伴讨论并给出答案。T: Now lets check the answers together. 找学生回答问题之后，核对答案。解释课文，激发学生提问，学生回答，教师补充。T: Do you have any problems in the passage?S1: Yes. Whats the meaning of ? S2 , can you tell me?S2: Yes, I can. It means T: Well done. Any more?T: Find out the key sentences of each paragraph and give a good title to this passage. Answers:Paragraph 1: Computers have become very important in many areas of work and play. Paragraph 2: There is no doubt that computers are very useful in technology and business. Paragraph 3: Since the Internet came into being, peoples lives at home have changed, too. Paragraph 4: Computers have improved our lives, but they have brought problems, too. T: Now you can finish 1b all by yourselves. Step 3 ConsolidationT: Boys and girls, we know that computers are playing an important role in our daily life. We also know that when we use computers, we must take care of ourselves. OK, who can tell us the uses of computers and the Internet in our daily life?T: Computers and the Internet help people a lot in almost every field, but it is not good for us to work on the computer too long. Look at the pictures and tell me whether it is good habit, why?T: OK. We know computers and the Internet are useful. But they also bring us some problems. Please discuss in groups and write down what problems they can bring us. 教育学生自己找过度上网，特别是在网吧打网络游戏的害处，经过交流后，把它们记录下来告诫大家。T: Lets exchange the results you have found, and choose some to write down on your exercise books. Step 4 Practice 1.各小组把分组讨论结果说给大家，比一比，看哪组说得好。T: Please tell us the results of your discussion. 2.学生再次阅读1a, 找出含有宾语补足语的句子，并把它画出，教师板书并适当讲解。1. They keep their hearts beating well. 2. Computers have made the workplace safer and better. 3. Computers have made the world smaller, like a “village”.3.教师进一步归纳宾语补足语，说明很多词都可作宾补。T: Boys and girls, look at the blackboard to see what kind of words can be object complement. 教师用投影仪展示句子，让学生看哪些词可作宾补。(1) We made her the monitor. (名词)(2) He doesnt believe the story true. (形容词)(3) The doctor advised her to stay in bed. (不定式)(4) They saw her walking into the bookstore. (分词短语)(5) The child saw the kite up and up. (副词)(6) You should put your books in order. (介词短语)Step 5 Project 分组讨论如