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The importance of water
2. Reason 1: Life came from water and human bodies are made of water.
★ Guess a riddle to make students realize life came from water.
★ Listening practice: Enable students to learn that water takes up about 70% of human bodies.
★ Summary: reason 1
3. Reason 2: The importance of water in our daily lives
★ Oral Practice: How do we use water in our daily lives?
★ Summary: reason 2
4. Reason 3：Introduce a city on water: Venice.
★ Oral practice: Say something about Venice with some clues
★ Writing: Write an article to introduce Venice.
★ Summary: reason 3
5. Summarize the importance of water：
设计意图
小组讨论：如果穿过沙漠只能带一样东西，他们应该带什么，从而引出水的重要性。
谈论水的重要性。
水的重要性原因1：水是生命之源，人体70%是由水组成的:
(1)通过猜谜引出水是生命的源泉 （2）通过听力训练，让学生了解在不同阶段水占身体的比重不同。
原因1小结
让学生口头谈论水对日常生活的重要性。
原因2小结
学习书本P70 Culture Corner: Venice
先口头谈论，然后让学生写下来
原因3小结
总结水的重要性
第一页
Step Three: The bad things we do to water
1. Show a video:
★ Ask the students to talk about what bad things we did to water
★ The bad results