Module 3 Unit2 课件 2024-2025学年外研版八年级英语下册

Module 3 Module 3 Journey to space Unit 2 We have not found life on any other planets yet. Yi Yi By the end of this unit, you are expected to: describe the relationships among the earth, the solar system, the Galaxy and the universe in English; be clear about what we have achieved in space exploring. Yi Yi “在此键入引文。” 8 planets the sun 👆 solar system the moon Mars Which planets have we been to? Yi Yi “在此键入引文。” solar system the Galaxy/ the Milky Way is a small part of 👇 billions of stars Yi Yi “在此键入引文。” the Galaxy/ the Milky Way the universe is a small part of Yi Yi “在此键入引文。” the Galaxy/ the Milky Way the universe the solar system the earth is a small part of … Yi Yi “在此键入引文。” Shenzhou-9 is a manned spacecraft. Tiangong-1 is a space lab. P20, A1: What do you know about Chinese spacecraft? We have launched Shenzhou-9 spacecraft onto the low Earth orbit. Why do we send spacecraft to the universe? Why do we build space station in the universe? How much have we learned about the universe? Tiangong Space Station Yi Yi “在此键入引文。” Yi Yi Unit 2 We have not found life on any other planets yet. Work in groups. Think of as many words/ questions as possible. Yi Yi Anyone out there? Life on the earth The sun and other stars The stars at night If you are going to write a passage with one of the following titles, what may it be about? Is there life on other planets? How life developed on earth? What is it like? What are the characteristics/ features of the two? Looking at the night sky with telescopes P20, A2: Read the passage and choose the best title for it. Yi Yi “在此键入引文。” life other planets other planets Anyone out there? Yi Yi What does “there” refer to in “Anyone out there?” It refers to “the earth”. “Anyone out of the earth?” A. n×109 B. n×108 C. n×107 Yi Yi How many planets are there in the solar system? Why don’t scientists think there is life on other planets? Why is it hard to imagine the size of the universe? How far have scientists sent spacecraft? Label “the solar system, the Milky Way, the universe” in the picture. There are eight. Yi Yi “在此键入引文。” Why don’t scientists think there is life on other planets? Because none has an environment like the earth’s. “（……中）没有一个（人）” None of the answer is/ are correct. None of us has/ have been to Mars. No one has been to Mars. 👇 none of + sb/ sth + V（单/复） no one + V（单），只指人。 Yi Yi “在此键入引文。” Why is it hard to imagine the size of the universe? Is “light year” a unit（单位） of time or distance（距离）? Yi Yi “在此键入引文。” How far have scientists sent spacecraft? Anyone discovery/ response? too far away Yi Yi “在此键入引文。” the Milky Way/ the Galaxy the solar system Yi Yi “在此键入引文。” the Milky Way/ the Galaxy the solar system the universe be a small part of … The earth is a planet that goes around the sun. It is a small part of …, outside which we have 🚀… The solar system is … The Milky Way is … The size of the universe is impossible to … because … Yi Yi “在此键入引文。” Yi Yi The earth is a star. The sun is a star. There is more than one galaxy in the universe. The light from the stars in other galaxies has traveled for a long time to reach us. Scientists have received many messages from space. Spacecraft have visited most of the universe. P21, A3: Check the true sentences. √ √ √ Yi Yi Work in groups and try to answer one of the questions. Are we the only life/ creature in the universe? speak/ talk to be in touch with Yi Yi 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. Spacecraft 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? Is it true that scientists have not discovered life on other planets in the 5.______________ yet, but some scientists believe that they will find it someday. P21, A4: Complete the passage with the correct form of the words in the box. communicate environment none solar system universe solar system none environment communicate universe Yi Yi Why do you think scientists are interested in sending spacecraft to Mars? What challenges might astronauts face if they travel to Mars? How can learning about space travel benefit us on the earth? Yi Yi $$