2. 1.Don’t panic! 2.the latest news 3.show sth to sb 4. What are you up to? 5.in space 6. How often are you alone? 7.go around 8.send sth. to sb 9.take the space shuttle, by space shuttle 10.There has been life on Earth for millions of years. There are more than 200 billion stars in our galaxy.

3. 11.With so many stars in the universe, are we alone? 12.The spacecraft has reached Mars. Have they arrived in London? arrive at the church Has it arrived yet? I get to school at 7:15 every morning. 13.beyond the solar system. 14.It has taken several months to get there. 15. They’ve gone to Shanghai on business.

4. A: Hi, Tony. What are you ______ to? B: Hi Daming, I’ve just _____ this model ___ the spacestation. What do you think? A: It’s ___. Is this ___ your space travel homework? I haven’t started it ______. B: Don’t ____. Ms James wants it next week. Have you ____ the _____ news? Some scientists have ____ a spacecraft ___ Mars. It has ____ several months ___get there. A: Has it ______ yet?

5. B: Yes, it has. That’s _____ it’s ____ the news. A: And ____ the astronauts discovered life ___ Mars? B: No, not ___. There aren’t __ astronauts ___the spacecraft. A: But astronauts have ___ ____ ___ the moon. B: Yes, but no one ___ been ___. But ___ __ astronauts have worked ___ the space station. They _____ the space shuttle, and go there and _____.

6. B: But I hear they’ve _____ to Shanghai ____business. A: Oh, they’re coming _____ this evening. I’d _____to _____ it _____ them. B: All right, you can _____ it. But ____ it ___ tomorrow. A: You know a lot ___ space travel. Can I show your space station ____ my parents?

7. Scientists think that there ____ ____ life on Earth __millions __ years. However, we haven’t found life __ other planets ____. Why ____ ? The earth is a planet and it ___ around the ___. Eight __planets also ___ around the sun. ____ ___ them has __environment ___ air, so people and things ____ grow. The sun and its planets ____ ____ the solar system. The solar system is a small ___ ___ our galaxy. The stars we see __ night are the suns, in ___ solar system. There ___ more __ 200 ___ stars in our galaxy,____ the ___ ___, and our sun is ___ one ___ them.

8. But scientists have ___ many other ____ in the universe. They are a long way ___ and their light has __ __ many years to __ us. It is ___ to understand __ large the universe is. Scientists have sent lots of ___ to look ___other planets in our solar system, and some spacecraft ___ gone ___The solar system. ___, no one __ discovered any life __space yet. But why ___ no one ___ other planets sent us a ___? ___ they ___ to send ____ to us? ____ so many stars ___ the universe, are we ____, or ___ there life out there __ ___? We don’t know…yet.

9. Fill in the blanks using “for” or “since”: 1. He__________(know) me________ May 2004. 2. Betty _________ (study) Chinese in Beijing______ 2005. 3. Tony and Lucy ____________ (study)at Beijing International School _____ last year. 4.They __________ (have) the computer _________two years. 5. I ____________( know) about Project Hope ______ a week. Li Ming _______ ( tell ) me a week ago. has knownsince has studied since have studied since have had for have known for told

10. 5.- How long __you__your dictionary? - About two months. A. did; buy B. have; get C. have; had D. have; bought C 6. He tells me he________ China for over five years. A. has been B. has been in C. has been to D. has gone to 7._____has Mr White been a member of Greener China since he _____to China? A. How soon, comes B. How often, got C. How long, came D. How far, arrived 8. His uncle_____ for more than 9 years. A. has come here B. has started to work C. has lived there D. has left the university B C C

11. 9. He has never surfed, __________( 改成反意 疑问句） ? 10. They have been here since 2000. ( 对划线 部分提问 ) __________ have they been here? 11. The old man _________last year. He____________ for a year.(die) 12. This factory opened twenty years ago.( 改 写句子，句意不变 ) This factory ____________ for twenty years. hashe How long died has been dead has been open

12. 13. Miss Gao left an hour ago. （同上） Miss Gao___________ __________ an hour ago. 14.The Green Family moved to France two years ago. （同上） _________ two years________ the Green family moved to France. 15. The bus has arrived here. It arrived ten minutes ago. （同上） _____________________________________ ______________________________________ has been away since It’s since The bus has been here for ten minutes. It’s ten minutes since the bus arrived here.

13. 1 吉姆买了这只钢笔两年了。 buy----have Jim has had this pen for two years. Jim has had this pen since two years ago. Jim has had this pen since 2003. It is two years since Jim bought this pen. It has been two years since Jim bought this pen. Jim bought this pen two years ago. 2 、 李雷自从 2003 年就参军。 3 、那部电影开始 30 分钟了。 4 、自从两年前这家商店就开了。 5 、那个老人已经死了五年了。 6 、莉莉六年前就离开家了。

14. 1 The film began thirty minutes ago. The film has been on for thirty minutes. It is thirty minutes since the film began. 2 This shop opened two years ago. This shop has been open since two years ago. It is two years since this shop opened.

15. 3The old man died five years ago. The old man has been dead for five years. It is five years since the old man died. 4 Lily left home six years ago. Lily has been away from home for six years. It is six years since Lily left home.