Unit 4 Topic 1 Section D（同步课件）-2023-2024学年九年级英语上册同步精品课堂（仁爱科普版）

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 [ɪks'plɔːrə] Mark n.标示;记号v.做记号 [mɑːk] system n.体系,方法,制度 [ˈsɪstəm] man-made adj.人造的;非天然的 ['mænmeɪd] 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