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教学过程：
Step 1 Pre-reading
Watch a film about the Earth
Talk about the Earth
What’s on her surface?
What’s in her body?
We should protect the Earth.
Step 2 While-reading
Watch the cartoon
Q: How can we protect the Earth? (Learn: save, plastic)
Save water Save energy Save trees
Don’t use too much plastic
Passage 1 Save water
Look and say
Q1: What do we use water to do? (Learn: We use water to …)
Q2: (PPT) Can we use water like him? (Learn: waste)
Listen, read and think
Q:What should we do?
We should reuse and save it. (Learn: reuse)
Read the passage
Passage 2 Save energy
Watch the cartoon and try to know more about energy
Listen and judge (Learn: so much)
Read the passage
Passage 3&4 Save trees, Don’t use too much plastic
The students learn by themselves
Task 1 Read and circle
Task 2 Discuss in pairs
Task 3 Read the passages
Read the whole text with the cartoon