Unit 4 Topic 1 Section D课件2023-2024学年仁爱科普版九年级英语上册

Unit 4 Amazing Science Topic 1 Section D 学习目标 预习检测 知识梳理 课堂总结 学习 导航 重点探究 当堂检测 新课导入 Is GPS useful to us when we get lost? 1.My bike was lost. I couldn’t ______it anywhere.  A.look for 　　　　 B.find 　　　　 C.discover 　　　　 D.find out 2._____the stars at night, we can know in which direction we go. A.Using B.To use C.Used D.Use 3.______the weather is fine tomorrow, we will go fishing. A.As well as B. As soon as C. As long as D. As far as B A C 预习检测 4.The invention______helps us explore our planet is GPS. A.what B.who C.when D.that 5.______something is very interesting and exciting. A.Inventing B.To invent C.Invent D.Invented D A 能熟悉并正确运用本课时的重点单词和短语 1 2 3 能归纳总结一般过去时的被动语态 能用英语谈论GPS的用途 学习目标 学习目标 学习目标 学习目标 知识梳理 Key phrases 1.探索我们的世界 explore our world 2.天空中的星星 the stars in the sky 3.早期的探险者 the early explorers 4.找出；查明 find out 5.在哪个方向 in which direction 6.奏效；可行 work well 7.只要 as long as 8.在其余时间里 the rest of the time 9.在任何时间 at any time 10.在任何地点 in any place 11.在任何天气下 in any weather 12.地球的形状 the shape of the earth GPS的用途 Where Are We? Where are we? That was a big question when we first explored our world long ago. The early explorers found that the stars in the sky were good guiding marks. Using the stars, they could find out where they were and in which direction they were going. This method worked well at night as long as the weather was good and the stars could be seen. But it didn't work so well during the rest of the time. That was a problem. 探究一 探究一 探究一 探究一 Today, the problem has been solved by the Global Postitoning System(GPS). 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 can also be used to study the shape of the earth. The GPS is a great invention that helps us explore our planet and discover where we are. 1. How did the early explorers know where they were? They found out where they wer