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1 Pupils can grasp the use of the modal verb: should.
2 Pupils can make sentences with use…to…
Preparation教学准备：
PPT,预先请学生做好二次利用的物品，
Teaching procedures教学过程：
Step 1 Warm up
1 T shows the picture of the earth, it’s healthy, then shows another picture of it, it’s ill.
T: Boys and girls, how do you feel about the Earth?
Ss: I feel sad..
T:What should we do?
Ss: We should…(出示并板书protect the Earth)
T: Do you want to be the little environment protector?
Let’s try to be one, Miss Li, Chairman of the World Environment Organization, will recruit some Chinese volunteers, do you want to be the volunteers? You must finish three things well .
I know how to protect the Earth.
I can use”use ..to...”.
I can reuse some daily things.
Step 2 Revision
Task1: Know how to protect the Earth
Ss answer this question: Save the water, save energy…
Teacher shows respective pictures. (Review main ideas of the story time)
T: Let’s review :choose one picture to say more（板书）
Task2: Know how to deal with these things
Read and judge
1. We should use paper bags and glass bottles..
2. We should save trees.
3. We should not drive so much.
4. We should not cut down too many trees.
5. We should not use too many plastic bags or bottles.
Ss judge them.
look and write