2. (让学生两人一组对话, 以此方式多练几遍，然后检查几组学生，以检验活动成果。)

T: Please work in pairs. Three minutes later, I’ll ask some pairs to act it out.

1. (让学生跟读录音1a。)

T: Please read the dialog after the tape.

4. (让学生根据1a完成1b。)

T: 　 Please fill in the blanks according to 1a.

(学生完成后与教师核对答案。)

Step 3 　Consolidation 第三步 　巩固(时间:10分钟)

3. (让学生再次听录音，回答小黑板上的问题，为下面完成1b做铺垫。)

T: 　 Please listen to the tape again, then try to answer the questions on the small blackboard.

(出示小黑板。)

(教师与学生核对答案。)

2. T: Now we know how to protect the environment at home. What can we do at school to protect the environment? Please listen to the tape, then find out the answer.

　 (教师放录音1a，让学生不看书回答问题。)

T:　　 Can you find out the answer?

(教师与学生核对答案。)

Step 1 　Review 第一步 　复习(时间:5分钟)

　(师生互动，复习上个话题的内容，练习学生的听、说能力。)

T: We talked about the harm of pollution in the last topic. And we know there are many kinds of pollution, such as water pollution, air pollution, light pollution, litter. How do these kinds of pollution affect our environment?

(教师以竞答的方式请学生个别回答。)

Example:

S₁: Water pollution makes some animals dead.

　 S₂: Water pollution makes some plants dead.

　 S₃: People and animals can’t drink the water.

　 S₄: Air pollution causes the greenhouse effect.

　 S₅: Air pollution makes people sick and even causes cancer.

　 S₆: Air pollution destroys the ozone layer.

　 …

　 T: Yes, you are right. You know, all kinds of pollution are polluting our environment. So we are facing the serious pollution problems. What should we do to improve our environment?

　 (学生分组讨论，然后回答。)

　 Group 1: Don’t spit anywhere.

Don’t pick the flowers.

Plant more trees.

…

Group 2: Ask the government to make rules and pull down some chemical factories.

　　　　 Ask people to save electricity.

　　　　 …

T: Very good! You have so many good ideas. Would you like to do something useful to improve our environment?

Ss:Yes, of course.

T: Me, too! OK, let’s be greener people together. Today, we’ll learn topic 3-Would you like to be a greener person?

(板书)

Step 2　 Presentation 第二步 　呈现(时间:16分钟)

1. (教师用图片引出本课的词汇和内容。)

T: If we want to be greener people, what should we do at home?

(展示图片)

T: Is he a greener person?

Ss:　　　 No.

T: We should reuse plastic bags instead of throwing them away.

(板书，让学生猜测其汉语意思，且要求掌握。)

(展示图片)

T: Is it green?

Ss:　　　 No.

T: We should reduce using plastic bags.

(板书并讲解)

(教师展示图片)

T: Look at these soft drink cans.

(板书)

T: 　　　 How shall we deal with them?

Ss:　　　 We should collect them for recycling.

(教师让学生看图片，总结。)

T: Now, we know we should reduce, reuse and recycle some things at home to protect our environment. We call them the three Rs.

(板书)

T: It is not hard for us to protect the environment. So we can encourage the people around us to be greener people.

(板书，讲解且要求掌握。)

T: Would you like to do so?

Ss:　　　 Sure.

T: Protecting our environment is our duty. That is to say, everyone is supposed to do that.

(板书)

录音机/垃圾污染的多媒体图片或挂图/小黑板

3. Learn to talk about environmental protection.

2. Learn the compound sentence.

1. Learn some new words:

plastic, encourage, suppose, nod, agreement, shake