Module 3 Unit 2 课件- 2024-2025学年外研版八年级英语下册

Module 3 Unit 2 We have not found life on any other planets yet. Aims: 1.Be able to read and write new words correctly. 2.Be able to get key information about space travel. 3.Be able to retell the key sentences . Have a dictation: 1.[nʌn]pron. 2.[ɪnˈvaɪrənmənt]n. 3.[ðæt]pron. 4.[ˈsəʊlə]adj. 5.[ˈsɪstəm]n. 6.星系，太阳系 7.[ɡruːp] n. 8.[ˈɡæləksi]n. 9.[ˈjuːnɪvɜːs]n. 10.[laɪt]n. 11.[ɪmˈpɒsəbl]adj. 12.[aʊt]adv. 13.[kəˈmjuːnɪkeɪt]v. 1. none 2. environment 3. that 4. solar 5. system 6. solar system 7. group 8. galaxy 9. universe 10. light 11. impossible 12. out 13. communicate Aim1：准确读写 1 2 3 4 5 Read the passage and choose the best title. A. Anyone out there? B. Life on the earth C. The solar system D. The stars at night √ 1.How long has there been life on the earth? For hundreds of millions of years. 2.Have scientists found life on any other planets yet? No, they haven’t. Read Para. 1 and write down your answers. Aim2：概括、提取信息 1.Is the earth a star or a planet? 2.How many planets travel around the sun? 3.Why don’t scientists think they will find life on seven other planets? 4.What is the solar system? 5.What is the Galaxy? Because none of them has an environment like that of the earth. Read Para. 2 and write down your answers. A planet/It is a planet. Eight. The sun and its planets. It is a much larger group of stars and planets. Aim2：概括、提取信息 Read Para. 3 and write down your answers. 2.Why does the light in other galaxies have to travel for many years to reach us? 1.What have scientists also discovered in the universe？ They have discovered many other galaxies in the universe. Because other galaxies are very far away. 3.It is impossible to imagine how large the universe is. What does ‘It’ refer to? To imagine how large the universe is. Aim2：概括、提取信息 Read Para. 4 and write down your answers. Scientists ______________ spacecraft to the planet Mars to _______________. (Translate) They _________________ spacecraft ________________ the solar system.(Translate) However, no spacecraft ____________ _ far enough to _____________________ in our Galaxy. have sent take photos have even sent to travel outside has travelled reach other stars Aim3：复述重点句 (Translate) 1. (science) have always 2. (ask) the questions: 3. (介词) so many stars in the universe, are we alone, 4. (连词) is there life out there 5. (介词) space? Have there 6. (be) 7. (visit) to the earth from other planets? Why has no one communicated 8. (介词) us? We do not know the answers... yet. Read Para. 5 and write down your answers. Scientists asked with or in been visitors with Aim3：复述重点句 Scientists think that there 1. (have) been life 2. (介词) the earth for hundreds of 3. (million) of years. 4. (连词) we have not 5. (find) life on any other planets yet. The earth and seven other planets go 6. (介词) the sun. None of them 7. (have) an environment 8. (介词) that of the earth. The sun and 9.__(it) planets are 10. (call) the solar system, and our solar system is a small part of a much 11. (large) group of stars and planets, called the Galaxy or the Milky Way. There are 12. ____(billion) of stars in the Galaxy, and our sun is only one of them. Scientists have also 13. (discover) many other14. (galaxy) in the universe. They are very far away and their light 15. (have) to travel for many years to reach 16. (we). It is 17. (possible) to imagine how large the universe is. 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. √ √ × planet √ × × 6. Spaceships haven’t visited most of the universe. 5.Scientists haven’t received many messages from space. 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. 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. solar system none environment communicate universe 1. 地球上的生命已经存在亿万年了。 2. 但是我们还没有在其他一些星球上发现生命。 3. 它们中没一个有和地球一样的环境。 4. 科学家们在太空也发现了许多其他的星系。 5. 不可能想象到。 6. 但是还没有航天器走得远到能到达银河系里其它的恒星。 7. 有过从其他星球来地球的访客吗？ 8. 为什么没有人跟我们联系过？ Mike is my pen friend. I am glad to introduce him to you. He is quite tall, with short fair hair, and he wears glasses. He has the same hobbies as me. He spends a lot of time playing classical music with his friends at school. He enjoys sports as well, especially tennis. He also loves seeing the world. He is in Cairo in Egypt, one of the biggest and busiest cities in Africa. He has been to many interesting places. For example, in Egypt, he has seen the Pyramids, travelled on a boat on the Nile River, and visited the palaces and towers of the ancient kings and queens. He can speak different languages. So far he has learnt to speak German, French, Chinese and Arabic. He is good at everything and often gets good marks at school. I am proud of him. He is coming to China. He feels nervous when he speaks Chinese. So please help him when he is with us in China. I can’t tell you how excited I am about his coming. I can’t wait to meet him. Thank You! $$