Module3 Unit2 课件 2022-2023学年外研版英语八年级下册

Module 3 Journey to space PPTS设计工作室 Unit 2 We have not found life on any other planets yet. 1 earth moon planet Revision 2 spaceship astronaut space travel Scientists _(send) a spaceship to Mars. The journey _(take) several months. It _ (arrive) already, but they _ (not discover) life on Mars yet. have sent has taken Read and fill haven’t discovered has arrived 5 Astronauts _ already _(be) to the moon, but no one _(be) to Mars yet, because Mars is very _, much farther than the moon. Lots of scientists are working hard _send astronauts to Mars one day. been have has been far away in order to planet, galaxy, star, universe, solar system _ ﹤ _ ﹤ _ ﹤ _ ﹤ _ Can you put the words in order? (from small to large) Look and learn 7 The Earth is a planet. The Sun is a star. solar system The earth and other seven planets go around the sun. Galaxy = Milky Way 银河系 The solar system is a small part of the galaxy. universe 宇宙 The galaxy is a small part of the universe. planet star solar system universe galaxy 1. Have we ever been to the moon? 2. Have we ever been to the sun? 3. How many planets have we found in the solar system? 4. Have we ever gone beyond the moon? 5. Have we found life on other planets yet? Ask and answer with your deskmate. Part I (Para.1) Part II (Para.2~3) Part III(Para.4~5) Life on the earth What we have done and the remaining questions The brief introduction of the universe Match the headline with each part. 2 Reading 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. √ √ √ 16 Scientists think that there has been life on the earth for hundreds of millions of years. However, we have not found life on any other plants yet. Read Para 1 17 There has been life on the earth for _ _ years. However, have