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What can we get from trees?
自由会话，进入主题。用问题引发学生对于不同种类树的思考。Step 2.While-task procedure
T: What can we get from fruit trees?
What else can we get from trees?
Learn :We get clothes from cotton.
What do we use wood for?
Lean:use…to…
Work in pairs,talk about :
We use… to make…
Watch the video for one time,ask students to read by themselves.
Answer the questions
What can trees do?
Trees make our city beautiful.
We get a lot of things from trees.
Trees can keep the air clean.
Trees can cool the air.
Watch the video again and answer some questions.
What does Peter like?Why?
What can we make out of wood?
What do trees do for us?
What should we do?
Answer the questions.
Watch the video for the third time.
Perform the dialogue.
12.Try to change the words of the dialogue and perform it again.
通过图片和问题，让学生思考回答。通过层层递进的问题，让学生们逐步深入去学习人们可以从树从木头中得到什么。
充分发挥小组合作的作用，让学生们共同回答问题。通过三次看视频，一步一步了解对话中的精髓，了解树的作用，了解文中的对话者的观点。
Step 3.Post-task activities
Do some exercises about the dialogue together.
Complete the questions in the book.