Module 3 Unit 2 课件 2024-2025学年外研版英语八年级下册

M3U2 We have not found life on any other planets yet. Mercury水星 Venus 金星 Mars 火星 Jupiter 木星 Saturn 土星 Uranus 天王星 Neptune海王星 What are they? Revision Earth 地球 Leading-in 02 03 How do you feel after watching this video? In the universe, there are many galaxies. galaxy [' l ks ]星系 the galaxy 银河系 the Milky Way solar system 太阳系 = planet 行星 A planet can’t shine. star 恒星 A star can shine. the Galaxy planet solar system star universe Read and match the headings with the paragraphs: Spaceships B. Life C. The Milky Way/The Galaxy. D. Questions E. Other galaxies Para. 1 Para. 2 Para. 3 Para. 4 Para. 5 Fast reading 1. There was life on the earth a thousand years ago. 2. We didn’t find any life on any other planets. 3. We won’t find any life on any other planets. Read para.1 and check T or F. Reading T F T Read Para.2 and answer. 1. What’s the solar system? 2. How many planets and stars are there in the solar system? Eight planets and a star. The sun and its planets are called the solar system. Read Para.2 and answer. Why don’t scientists think they will find life on seven other planets? None of them has an environment like that of the earth. proper temperature fresh air clean water ... Put the words and expressions from the smallest to the largest :_ A. the Galaxy B. planet C. solar system D. star E. universe B D C A E Read Para. 2-3 and fill in the blank. How many stars are there in the Galaxy? How many galaxies are there in the universe? How large is the universe? the Milky Way/ the Galaxy You are here! Read Para. 2-3 and answer. It's impossible to imagine. galaxies 1. There are billions of stars in the Galaxy, and our sun is only one of them. 2. Scientists have also discovered many other galaxies in the universe.They are very far away and light has to travel for many years to reach us. Read Para. 2-3 and find out some sentences that show the universe is large. Read Para. 4 and answer. What can we learn from Paragraph 4? A. Scientists have known nothing about Mars. B. Scientists have stopped exploring (探索) outside the solar system. C. It has been too far away to reach other stars so far. D. There was a spaceship that reached other stars before. Does the writer think we will find the answers one day? Yes, he does. we don’t know now, but maybe we will know in the future. Read Para. 5 and answer. What's the purpose (意图) of writing the passage? A. To show what the scientists have done to explore (探索) the universe. B. To tell readers there has been life on earth for millions of years. C. To make more readers get interested in science and the universe. D. To introduce the solar system and galaxies to readers. Tip: When getting the purpose of writing a passage, the last paragraph may be very important. Choose the best title for it. 2. Life on the earth 3. The sun and other stars 4. The stars at night 1. Anyone out there? 1. You may read the passage from the website _. A. www. history.com B. www. travelling.com C. www. science.com D. www. stories.com 2. Are we alone? Is there anyone out there? Maybe we are not alone. The universe is too large to believe we are alone. Further thinking 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. 3. Check (√) the true sentences. √ √ √ 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. Spaceships from theearth 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 environment none solar system universe solar system none environment communicate universe null Other 111676.555 Lavf58.20.100 $$