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教学过程：
Step 1:Enjoy a song 《Two little blackbirds》
Q: What’s missing ?
Step 2: Pre-reading
1.Free talk.
T: Look at some pictures of our city . Is our city clean? What should we do?
2.Enjoy a video about the Earth and then anwer: Who’s she?
(Learn:Earth)
3.(PPT)Talk about the Earth with the students .What should we do?
(Learn: protect) 板书：Protect the Earth
Step 3: While-reading
Watch the cartoon
Q: How can we protect the Earth?
Save water Save energy Save trees
Don’t use too much plastic
Passage 1： Save water
Watch and answer:
Why should we save water ?
Think and discuss:
Q:What do we use water to do?(Learn: reuse)
Phrase: Not much
(4) (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)
Step 4 : After-reading
Enjoy the pictures of Xinggang School.
Be the reporter.
Step 5: Homework
Listen to the tape and read Story time. Finish the exercises on P70.