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课件网) 八年级上册 英 语 仁爱版 仁爱版 英语 九年级上册 Warming up—Pre-reading—While-reading—Post-reading—Exercises —Summary Unit 4 Amazing Science Topic 1 When was it invented Section D Warming up What's a rocket used for It is used for sending satellites or spaceships into space. Where was it developed It was developed in Japan. When was the digital camera deveioped It was developed in the 1970s. The radio was invented by Guglielmo Marconi in 1895. 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. learn new words explorer n.探险者,勘探者 [ ks'pl r ] Mark n.标示;记号v.做记号 [mɑ k] system n.体系,方法,制度 [ s st m] man-made adj.人造的;非天然的 ['m nme d] 用括号内所给单词的适当形式填空, 每空一词。 1. Zhang Qian was a great _____ (explore) in ancient China. 2. Gulangyu was _____ (list) as a UNESCO World Heritage Site(遗产) in 2017. explorer listed 3. They are going to _____ (design) the house because it’s out of fashion. 4. I don’t want to _____ (courage) you, but I don’t think it’s a good idea. redesign discourage 5. It’s necessary for us to make a _____ (detail) plan before we start our work. detailed Pre-reading What method did you use to find your lost cellphone GPS 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. The early explorers used the stars as landmarks to know where they were and in which direction they were going. This method worked well at night as long as the weather was good. But it didn’t work so well during the rest of the time. Let’s use the GPS. n.探险者， 勘探者 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 … Read the passage and discuss the questions on Page88. Key words explore explorer, mark find out, in…direction work well, as long as the rest of the time solve, like, use, the shape of great invention n.标示，记号，符号 v.做记号，做标记 Retell it ! 根据首字母提示，完成短文。 Thanks to GPS, we can exactly know w _____we are now. GPS is like a man-made “star”. It can be u____ in any place and any weather condition to find out our p_____. In the past, the early explorers had to use stars in the s____ to tell them ... ...
