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1、Unit 2 Saving the EarthTopic 2 All these problems are very serious.Section AThe main activities are 1a and 2. 本课重点活动是 1a 和 2。I . Teaching aims and demands1. Learn a new word and some phrases: as a result, behavior, in the beginning, day by day, die out2. Learn some useful sentences:(1) As a result,
2、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 ptitsanywhere in public.(3) Everyone should care for wild animals and plant more trees.4. Learn the import
3、ance of protecting the environment.n . Teaching aids 教具有关污染的和学生不文明行为的教学图片 /小黑板 /录音机 /警示标语川.Five-finger Teaching PlanStep 1 Review 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:
4、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
5、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 s
6、moke.T: Yes. We should stop burning coal. It is said that China has become the world 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 resultT: Now our gover nment has realized the importance of protecti ng the environment.（板书并要求学生理解。）importa
7、 neeT: 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。）someth ing useful2. （播放1a录音，让学生带着问题去听。）T: Liste n to the tape, and an swer the questi ons on the small blackboard.（出示小黑板。）（1）What s the article about?（2）What should we do as stude nts?（核对答案。）3. （男女生
8、分角色朗读。）T: Let s read 1a tbget Boys Kangkang and girls Michael.4. （让学生再读1a，试着找出1a中的不定代词或不定副词，以及一些疑难点。）T: Read 1a aga in, and try to find the in defi nite 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。）找教案 T: Now, let s read this dialog together agai
9、n, 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 in1a. Then I ll ask some pairs to act out your own dialog in the front of the classroom. Example
10、:S1: Hi, S 2, 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 andworse. And the pollution has been the most serious problem in the world.S1: Yes. But it s lucky that lots of gover nments have
11、 done som uheful for the protect ion ofenvironment.S2： It s known that nobody likes pollution. But what should we do as students?Si： I think, first, every one should try to protect the en vir onment around us and we should nthrow the rubbish here and there. We should protect the wild ani mals and pl
12、a nts.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 school? Let s look at the pictures
13、.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。）rude2. （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。）behaviorSs: 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 t
14、o 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 begi nning, day by dayT: Discuss in groups of four, the n give a report.（小组选代表汇报。）3. （教师让学生用不定代词或不定副词完成这封信，完成2。）T: Here is a letter from Kan gka ng.
15、Is the environment of his school good or bad? What did he say in the letter? Please read 2. Choose the proper words to fill in the bla nks.（教师与学生核对答案。让学生认真地读这圭寸信，分析不定代词和不定副词在句中的作用。引导学生总结出不定代词/副词的用法。）4. （教师用图片作引导，让学生对新的语法进行训练，达到学以致用的目的。）（展示一系列有标语的图片。）T: We know we should protect the environment. As students, what should we do? To answer this question, you should use the indefinite pronouns or adverbs in your sentences.（教师可做适当的引导。）Si： None of us should step on the grass.S2: Don t throw rubbisfev
