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1)复习与话题信息相关的四会词汇以及重点句型。
2)能利用图片，文本提供的信息材料充分开展听、说、读、写活动，提高学生的综合运用语言的能力。
主要教法: 任务型教学法
教学过程:
StepⅠ.Lead-in:
A green world is of great importance to humans.
StepⅡ.Revision:
Task 1 learn about the situation.
The sky is polluted.
The water is polluted.
The energy will be used up soon.
Task 2 How to protect the earth?
To reduce pollution:
We can /should/must/had better...
To save energy:
We can /should/must/had better...
Task 3 What else can people do?
use new energy...
make laws ...
(中考连接：Passive voice in the simple future tense）
Task 4 Watch and consolidate:
Task 5 Group work — Let’s talk!
Task 6 Make a proposal on how to live a green life.
StepⅢ Summary and assignments.
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