Unit 2 Saving the Earth Topic 2 All these problems are very serious.
Section A
【教学重难点】
The main activities are 1a and 2．本课重点活动是1a和2。
【教学目标】
1．Learn a new word and some phrases:
as a result, behavior, in the beginning, day by day, die out
2．Learn some useful sentences:
（1）As a result, air pollution has become a serious problem.
（2）Humans have come to realize the importance of protecting animals.
3．Learn the indefinite pronoun and adverb:
（1） None of us likes pollution.
（2） Don’t spit anywhere in public．
（3） Everyone should care for wild animals and plant more trees.
4．Learn the importance of protecting the environment.
【教学准备】
【教学过程】
Step1 复习污染的类型及其危害，教师创设一个空气污染的情境，引入本课话题。
1．(教师收集一些有关污染的图片，让学生说出它们分别属于哪种污染，有何危害并提出解决建议。)
T: What kind of pollution is it?
Ss: It is noise pollution.
T: What harm can it cause?
S1: It can disturb others and make people feel uncomfortable and unpleasant.
S2: It does great harm to people’s hearing. It can even make people sick or deaf.
T: How should we solve this problem?
S3: Don’t always listen to loud pop music．
…
(学生可以在教师帮助下回答。)
2．(教师创设一个空气污染的情境，引入本课话题。例如：教师一边拍身上的灰尘，一边咳嗽着走进教室，然后描述。)
T: It is too dirty and there is too much heavy smoke outside. I can’t stand it.
Ss: Is it air pollution?
T: Yes, it is.
Step 2 Presentation
展示1a的图片，导入新课，呈现本课生词和词组。讲解不定代词和不定副词的用法。教育学生必须保护环境。
1．(教师展示1a的图片，导入新课。)
T: Do you like the environment here?
Ss: No, we don’t.
T: Why?
Ss: Because there is too much smoke.
T: Yes. We should stop burning coal. It is said that China has become the world’s largest
producer and user of coal. As a result, air pollution has become a serious problem.
(板书并要求学生掌握。)
as a result |
T: Now our government has realized the importance of protecting the environment.
(板书并要求学生理解。)
importance |
T: We should do something useful to protect the environment, too.
(板书并解释something是不定代词，其修饰语要放在它后面。)
something useful |
2．(播放1a录音，让学生带着问题去听。)
T: Listen to the tape, and answer the questions on the small blackboard．
(出示小黑板。)
（1）What’s the article about? （2）What should we do as students? |
(核对答案。)
3．(男女生分角朗读。)
T: Let’s read 1a together. Boys—Kangkang and girls—Michael.
4．(让学生再读1a，试着出1a中的不定代词或不定副词，以及一些疑难点。)
T: Read 1a again, and try to find the indefinite pronouns or adverbs.
Step 3 Consolidation
阅读1a，完成1b，开展分组活动加深对文章的理解，增强学生的环保意识。
1．(让学生齐读对话，巩固1a并完成1b。)
T: Now, let’s read this dialog together again, and then try to answer the questions in 1b as quickly as you can.
(核对答案。)
2．(让学生分组活动, 仿照1a编写对话，以达到学以致用的目的。)
T: OK, please work in pairs. Try to make a new dialog with your partner according to the dialog in 1a．Then I’ll ask some pairs to act out your own dialog in the front of the classroom.
Example:
S1: Hi, S2, what are you doing now?
S2: I’m reading a book.
S1: What’s it about?
S2: It’s about the environment in the world．It says that our environment is getting worse and worse. And the pollution has been the most serious problem in the world．
S1: Yes. But it’s lucky that lots of governments have done something useful for the protection of environment.
S2: It’s known that nobody likes pollution. But what should we do as students?
S1: I think, first, everyone should try to protect the environment around us and we shouldn’t spit or throw the rubbish here and there. We should protect the wild animals and plants.
S2: That’s right, we should do as much as possible to protect our earth.
Step 4 Practice
教师利用图片作引导，呈现部分生词和词组。让学生独立完成2，然后听录音，完成3。并通过练习，分析不定代词和不定副词在句中的作用，总结它们的用法。
1．(教师展示多幅有关学生不文明现象的图片。)
T: Environment is very important to us. How about the environment of Kangkang’s school? Let’s look at the pictures.
T: (指着第一幅图中的男生。) Is he polite or impolite?
Ss: Impolite.
T: Yes. He is rude.
(板书并要求学生理解。)
rude |
2．(让学生观察图片，然后分组讨论图中人物的行为是否正确。)
T: Are their behaviors good or bad?
(板书并要求学生掌握。)
behavior |
Ss: Bad．
T: I agree with you. What should we do then? We should make rules to change the situation. Perhaps it’s hard for us to follow the rules in the beginning. But you will get used to them later on and our school will become better and better day by day.
(板书并要求学生掌握。)
in the beginning, day by day |
T: Discuss in groups of four, then give a report.
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