2023-2024学年外研版八年级英语下册 Module 3 Unit 2 课件

Put them in order: small — large. galaxy planet solar system universe 行星 太阳系 星系 宇宙 导入一 Module 3 Journey to space We have not found life on any other planets yet. Unit 2 A. Anyone out there? B. Life on the earth C. The sun and other stars D. The stars at night The best title for the passage_____. A Reading tip : the beginning (Para1) and the ending(Para 5). Skimming : fast reading The Earth is a star. The Sun is a star. There is more than one galaxy in the universe. 4. The light from stars in other galaxies has travelled for a long time to reach us. 5. Scientists have received many messages from space. 6. Spaceship have visited most of the universe. Read the passage and check the true sentences. √ √ √ Scanning: planet haven’t any haven’t 1.How long has there been life on the earth? 2.Have we found life on any other planets yet? There has been life on the earth for hundreds of millions of years. No, we haven’t. Read para.1and answer: Scientists think that _____ _____ ____life ____ the earth for hundreds of millions of year. _________, we have not found life on any other _____ ____. there has been on However planets yet ?: Why we haven’t found life on any other planets yet? Careful reading: Topic ? No. Because none of them has an environment like that of the earth. Careful reading: Para 2 Have scientists found life on any other planets yet？Why？ What does “that” refer to? air oxygen(氧气) water food that (environment) ...... Careful reading: Fill in the mind map. Para2&3 Introduction(介绍) of the universe The earth and seven other planets go around the sun. The sun.... ? The stars look small. far away their light has to travel for many years to reach us. Light year (光年) large The distance that the light walks in one year. Careful reading: Para 3 9 It is 1._______ to 2______ how large the universe is. Because scientists have 3 ____________other galaxies in the universe. They are 4.________ and their light has