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Ear
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Unit 7 Protect the Earth
There’re more and more volunteers（志愿者）.
Do you want to join them？
你们愿意加入他们吗？
Protect the Earth
What else should we do?
我们还该做什么？
Watch and complete
How to protect the Earth?
Save water
Save energy
Save trees
Don't use too much plastic.
What else should we do?
我们还该做什么？
Watch and complete
Most of our energy comes from coal and oil. There is not much coal or oil on Earth. We should save energy. We should not drive so much because cars use a lot of energy.
用直线画出原因(Why do we save energy?)
虚线画出方法(How do we save energy?)
节约能源
A :What is energy?
B: ... comes from….
A:Why do we save energy?
B: Because we use… to…
A:How do we save energy?
B: We should…
... comes from…. Because we use… to… So we shouldn’t… We should…