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初二M3知识总结Darning： Hi, Tony. What are you up to?Tony： Hi, Darning. Ive just made a model spaceship for our school projectWhat are you up to? = Darning： I havent started yet because Im not sure how to make it. Can you help me?Tony： Sure, no problem. Have you heard the latest news? Scientists have sent a spaceship to Mars. The journey has taken several months.1. 确定做某事latest latelater lately =Darning： Has it arrived yet?Tony： Yes, it has arrived already. Thats why its on the news.2. Thats why on the news Darning： So have they discovered life on MarsTony： No, they havent yet.3. discover/invent/findDarning： Why Astronauts have already been to the moon.Tony： Yes, but no one has been to Mars yet, because Mars is very far away, much farther than the moon. Lots of scientists are working hard in order to send astronauts to Mars one day.4. far awayin order to do sth.和 in order that/so thatDarning： Thats interesting! How can I get information on space travel? Tony： You can go online to search for information.5. on space travel search for 和 search 的区别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 planets yet. 10. hundreds of millions ofOther/others/the other/the others/another 的区另U：(1) Would you like cup of tea?A.anotherB. other C. others D. the other(2)Some people came by carz came on foot.A. another B. other C. others D. the other(3)We havent found life on planets yet.A. another B. other C. others D. the other(4)He has two daughters. One is a teacher,is a doctor.A.anotherB. otherC. othersD. the otherThe earth is a planet and it goes around the sun. Seven other planets also go around the sun. None of them has an environment like that of the earth, so scientists do not think they will find life on them.11. go aroundNone/both/neither/either/all 的区别12. that/one /it/ones 的区别on earth on the earth The sun and its planets are called the solar system, and our solar system is a small part of a much larger group of stars and planets, called the Galaxy or the Milky Way. There are billions of stars in the Galaxy, and our sun is only one of them.13. 被动Scientists have also discovered many other galaxies in the universe. They are very far away and their light has to travel for many years to reach us. So how large is the universe It is impossible to imagine.14. in the universehave to do sth.和 must 的区别15. impossible possible Scientists have sent spaceships to the planet of Mars to take photos. They have even sent spaceships to travel outside the solar system. However, no spaceship has travelled far enough to reach other stars in our Galaxy.16. enough的用法Scientists have always asked the questions： with so many stars in the universe, are we alone, or is there life out there in space? Have there been visitors to the earth from other planets? Why has no one communicated with us We do not know the answers.yet.17. alone 和 lonely 的区别communicate with communication18. There be句型的一般将来时
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