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1. Free talk.
Play a VCR.
2. Ask and answer.
T: What can you see in the VCR?
S: I can see....
T: What should we do?
S: We should care for the earth.
Today we will learn Unit 3 Care for the Earth.
II. Lead—in new lesson.
合作探究 Practice
1. Play the tape have students repeat and correct their pronunciation.
Look at the picture and make up the sentences like this:
We shouldn’t____, we should ______.
Have students make up sentences in groups.
Notes: the earth, the sun, the moon 这三个表示天体的名词前都要用定冠词. earth 的发音是以元音因素开头的，其前面所用的定冠词读音不同。 = 1 \* ROMAN I .Teach the words : the earth, care for the earth.
1. T: We should care for the earth. Then what shouldn’t we do?
S1: We shouldn’t pick flowers
T: We shouldn’t pick flowers. We should care for the flowers
2. The students read the sentences together.
3. T: We should care for the earth. What should we do or what shouldn’t we do?
S2: We should …
4. Use the same way to lead the others phrases.
展示交流
I. Consolidation activity.
1.Play games
I. Consolidation activity.
1.Play the tape again and repeat then spell the phrases.达标检测Try to make sentences like the followings:
We should ...
We shouldn’t...
We’d better (not)...