《Care for the Earth》PPT
第一部分内容：Look and circle
What should we do?
What shouldn’t we do?
Listen and answer
How will Su Nan go to school?
He is going to school by bike.
Does Su Nan have some more soup? Why?
No, he doesn’t. Because he has no time. He has to clean his bike.
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《Care for the Earth》PPT，第二部分内容：Let’s learn
have to do 不得不做某事
I have to get up early.
I have to do my homework.
I have to cook breakfast.
I have to wash my clothes.
—Why …?
—Because …?
当我们不明白某种现象原因时，可以直接用Why?或者why构成的特殊疑问句进行询问；回答时可直接陈述理由或用because引导出原因。
—Why are you late for class?
—Because …?
Why not do …? 表示“何不 ……？为什么不……？”
是一种用来向别人提出建议的句型，也可以用来反问。
如：We are free tomorrow.
Why not go to the park together?
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《Care for the Earth》PPT，第三部分内容：Listen and imitate
Mom: Some more soup, dear?
Su Nan: Thanks, Mom. But I have no time.
I have to clean my bike.
Mom: Are you going to school by bike? Why not go in your dad's car?
Su Nan: We shouldn't drive the car today.
Mom: Why?
Su Nan: Because today is World Car Free Day. It’s time to do something for our earth.
Mom: I see. I think I should go to work on foot today.
Su Nan: Great, Mom! Thank you.
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《Care for the Earth》PPT，第四部分内容：Summary
本课所学重点句型有哪些？
Why not do …?
We shouldn’t do …
We should do …
Homework
1.观看课文动画，按照正确的语音、语调朗读课文对话。
2.记录生活中那些行为是我们应该哪些是不应该做的（不少于5句话）。
3.预习“Let’s learn more”。
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