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Ss: They are…
(展示丹顶鹤和麋鹿的图片问学生)
T: Look, They are red-crowned cranes and milu deers. They live happily in Yancheng. Today I bring you a short story about an animal. Look, what’s this?
S: It’s a bird.
T: Yes. Let’s watch the cartoon. After watching it, please tell me: What can you see in the cartoon?
T: What can you see in the cartoon?
S: I can see a river?
T: Is the river clean?
S: No, it’s dirty.
……
T: What can you feel about the cartoon?
S: …
T: Yes. There are so many bad things. Who did these bad things?
Ss: People.
T: What do you want to say to these people?
Ss: …
T: Yes. We should protect the Earth, right?
Ss: Yes.
T: So today we’re going to learn Unit 7 Protect the Earth.
(揭题，带领学生读课题)
Think and say
T: Look, this is the Earth. What do you know about Earth?
Ss: …
(展示地球多年前的一幅图和地球现在的一幅图，让学生比较后总结)
T总结: Look, the Earth is not as beautiful as before. So let’s be the green guards to protect the Earth. OK?
Ss: OK.
T: How can we become green guards? Look, here are some steps.
课件展示展示成为环保小卫士的步骤：
We know how to protect the Earth from some parts
We know the use of them