二、重点句型

1. How do you like life on Mars?= What do you think of life on Mars?
2. I thought you liked Mars. 我原以为你喜欢火星。
3. Daniel is thinking about what life will be like in the future .
4. It may be difficult to imagine.
5. Our planet, Earth, is becoming more and more crowded and polluted .
6. At present, our spacecraft are too slowly to carry large numbers of people to Mars—it takes months.
7. By 2100, the journey might take only a very short time in space shuttles (that travel at half the speed of light .)
8. Humans need food, water and air to survive .
9. However, it is not sure if these plants could produce water.
10. The gravity on Mars is only about three-eighths of the gravity on Earth .
11. There will be many different designs for settlers to choose from .
12. Every student will have a computer at home ( connecting to an inter-planet computer network.)
13. I am wondering if/whether there will be many people willing to move to Mars .
14. We could get ill from living there.
15. 50% of the students would like to move out of Earth .
16. It worries me.
17. It would be great to have robots do all the work for us.
18. It takes Mars about two years to revolve completely around the sun .
19. The surface of Mars is more like the surface of Earth than any other planet in our solar system.
20. A very popular form of entertainment is online games.
21. Things from Earth are hard to find. = It is hard to find thing from Earth.
22. She's too nervous to relax.
23. Robots could be the first to live on Mars . 机器人可能是第一批生活在火星上的（人）。
24. We will be cared for by robots.
25. Food will be in the form of pills.

三、语法

1. 掌握 can, could, may, might 四个情态动词在 表示请求 时的用法。
2. 宾语从句。（注意： 时态、语序、人称 三个方面）
3. ① that 引导陈述句的宾语从句。在口语中常省略。
4. ② if/whether 引导由一般疑问句转变而来的宾语从句。（要用陈述句语序并注意 if/whether 的区别）