九年级上册Unit 4 Topic 1 Section D.pptVIP

Unit 4 Amazing Science Topic 1 When was it invented ? Section D What’s it used for? It’s used for listening to music. What’s it made of? It’s made of plastic. Where was it invented? It was invented in Korea. When was it invented? It was invented in 1998. What’s it used for? It’s used for communicating easily. What’s it made of? It’s made of plastic and metal. Where was it invented? It was invented in America. When was it invented? It was invented in 1973. Functions 1. How did the early explorers know where they were? They found out where they were by using stars. 2. What’s the disadvantage of using the stars as guiding marks? Its disadvantage is that it didn’t work well when the weather was bad and the stars could not be seen. 3. What is a GPS? Is it useful to use? It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It is very useful. 4. What do you think the GPS will be used for in the future? … We Learn: 1. Some words : mark, explorer 2. Some phrases: find out, in …, direction, as long as, work well, the rest of the time, be used to, the shape of 3. Some sentences: This method worked well at night as long as the weather was good and the stars could be seen. We can: 1. Use the passive voice of the simple past tense more properly. 2.Talk about new technology GPS. 3. Develope our imagination and creativity by designing our own inventions. Project (1) This is Kangkang’s invention. Look at the information and the picture. What do you think of it ? Discuss with your partners. 2. Design your own invention. Draw a picture of it and write down the information about it. Thank you * 1.复习掌握语法—被动语态，并能用之去做题。 2.复习一些功能句。 3.通过阅读短文，理解什么是GPS定位系统及其在生活中的应用。 学习目标 自学指导1 1.自学