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3.Emotional aims: 让学生懂得保护环境的重要性。
【The key points and difficult points】 ：
Key points:
Words and phrases: user，none，rubbish，here and there，spit，wild , worst, nobody, untidy, rude, behavior, situation, punish, everybody, nowhere
Sentences: 1.But the government is doing something useful to protect the environment. 2.None of us likes pollution. 3.Don’t spit anywhere. 4.We should do everything we can to protect the environment.
Difficult points：
正确使用不定代词和不定副词来表达句子并能正确地运用于各种句型。
【 Learning strategies】：
通过引导学生在听前阅读 1b 和 2，培养学生形成听前熟悉、预测听力材料的习惯。 通过朗读 1a 和 2，引导学生模仿已有对话，编写新的对话。在授课过程中，使用小组合作教学方式。
【 Teaching aids 】：
幻灯片
【Teaching procedures 】：
Step1 Free talk
What should we do to protect the environment?.
Step2 Listening
1: Let the Ss listen to 1a twice and do 1b alone.
2. T: Now please check answers in your group.
Step 3 Reading
Let the Ss read 1a aloud and explain the key sentences of this dialog.
Step4 Practice
Retell the dialog according to 1c
Step 5 Listening again
Step 6 Exercises
Step 7 Summary
sum up the key phrases and the difficult sentences.
Step 8 Homework