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从reduce、reuse和recycle的角度谈论保护环境。
Getting students ready for learning:
Present different kinds of pictures about different pollution，let students know about the influence and harm that pollution brings us.
Lead to new lesson.
Talking about some pollution around us to lead to new lesson.
Listen to the radio and finish the table in 1b .
A:Before listening，know the meanings of each questions.
B:listen，and listen again.
C:Check the answers together.
Understand 1a by yourselves.
No speaking. No discussion. Using red pens to write points that you do not understand,and cicle the key points that you should remember.
Discuss in groups and change your ideas with your parters .
Students and teacher understand 1a together,and find out the difficult points.
Read after the tape.
Pay attention to the pronunciation.
Read 1a in groups,and have a PK.
Summmary
Homework
A:Copy some key words and phrases.
B:Find out more ways to protect our environment.