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难点1. To complete listening tasks and develop listening skills.
2. To talk about how to protect the environment in simple English.教学
准备A book, a computer, PPT活 动 设 计复 备A How green are you?
Step 1 Lead-in
Free talk
T: Pollution has become a serious problem all over the world. What can we do to protect the environment?
【设计意图：复习原有知识，同时导入A部分的主题，鼓励学生畅所欲言。】
B Speak up: We can plant more trees.
Step 1 Presentation
1. Listen to Part B
T: What can they do to protect the environment?
2. Talk about trees
T: Now let’s listen to the tape again and find out how trees can help us.
3. Language points
(1) be harmful to
(2) keep soil in place
【设计意图：在语境中讲解重点词汇，帮助学生了解并操练重点语言点。】
Step 2 Practice
1. Read and act
2. Read and find out
T: Let’s read the dialogue again and find some useful expressions:
A: Pollution has become a serious problem all around the world.
B: Yes, I agree. We should try our best to protect the environment.
A: What can we do?
B: W can …. I think …
A: Good idea. …
B: Right. … also …
A: Yes. …, too.
T: Now it’s your turn to make up similar dialogues.
【设计意图：引导学生找出有用的短语并编 排新对话，从而达到学以致用的目的。】