外研8年级下m3unit 2 第四课时.ppt

Earth moon news planet reach yet 地球 月亮，月球 新闻，消息 行星 到达；抵达 还，尚 model Mars spaceship discover astronaut space travel 模型 火星 航天器宇宙飞船 发现，找到 宇航员 航天旅行 go around the sun 绕太阳转 be called 被叫作… solar system 太阳系 have to 不得不 communicate with … 与…交流,与…联系 far enough 足够远 in the universe 在宇宙中 in space 在太空中 * Module 3 Journey to space 外研版 八年级下册 Unit 2 We have not found life on any other planets yet. 第四课时 × × 3 Check(√) the true sentences. 1. The earth is a star. 2. The sun is a star. 3. There is more than one galaxy in the universe. 4. The light from the stars in other galaxies has travelled for a long time to reach us. 5. Scientists have received many messages from space. 6. Spaceships have visited most of the universe. √ √ × √ 4 Complete the passage with the words and expression in the box. communicate environment none solar system universe Is there life on other planets? There are seven other planets in our (1) ____________, but (2)______ of them has a(n) (3)______________ like that of the earth. solar system none environment Spaceships from the earth have done surveys of the other planets, but they have not found any life there. Why has no one from other planets tried to (4) _____________ with us? It is true that scientists have not discovered life on other planets in the (5)_________ yet, but some scientists believe that they will find it some day. communicate universe communicate environment none solar system universe 5 Look at the picture from a science story for children and answer the questions. What have the scientists just received? (a message from one of our spaceships) They have just received a message from one of our spaceships. 1. Where has the spaceship landed? (Mars) It has landed on Mars. 2. What has the spaceship discovered? (people on Mars) It has discovered people on Mars. 4. Why have the people on Mars not visited us on the earth? (do not know how to) We do not know how to visit us on the earth. 3. Why