Module 3 The natural world
一、教学内容：
Unit 9 Sea water and rain water
(一) 掌握词汇、短语
(二) 重要句型
(三) 介词under, for, by的用法
(四) 连词if的用法
(五) 情态动词can的用法
二、知识总结与归纳
(一) 掌握词汇、短语
1. quarter
2. competition
3. ocean
4. earth
5. wonderful
6. whale
7. dangerous
8. stream
9. almost
10. cover
11. plant
12. oil
13. salt
14. nothing
15. without
16. borrow
17. dish
18. shower
19. fix
20. save
21. waste
22. take a shower
23. brush one’s teeth
24. be important to
25. save water
26. one of…
27. rather than
28. as well
29. three quarters of
30. turn off
31. use…for…
(二) 重要句型
1. If there is no rain, there will be no water to drink.
2. What do we use water for?
3. We use water for showering.
4. How can we save water?
5. We can save water by fixing dripping taps.
6. Sharks are one of the most intelligent animals.
(三) 介词under, for, by的用法
under的用法:
①在……下面
Edna sat very still under the trees.
He had a picture book under his arm.
②在……(管辖, 照顾等)之下
Nearly fifty workers are working under the manager.
We learned a great deal under his teaching.
③不到, 少于
All the children here are under seven.