仁爱版九年级英语优质课Unit 2 Saving the EarthTopic 1 Pollution causes too many problems. Se

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教案  The main activities are1a, 1b and3a. 本课重点活动是1a、1b和3a。

Ⅰ. Teaching aims and demands 教学目标

1. Learn some new words and phrases:

bee, my goodness, waste, stream, breathe, be harmful to, influence

2. Learn some useful sentences:

  (1) Oh, my goodness!

  (2) Look, there are several chemical factories pouring waste water into the stream.

3. Learn direct speech andindirect speech:

(1)Kangkang said that it was a beautiful place with lots of flowers and grass.

(2)Kangkang said that the flowers and grass had gone.

4. Learn and talk about different kinds of pollution:

(1) Air pollution makes people sick.

(2) Light pollution is harmful to eyes.

(3) Litter influences our environment.

Ⅱ. Teaching aids 教具

幻灯片/小黑板/录音机/图片

Ⅲ. Five-finger Teaching Plan 五指教学方案

Step 1  Review 第一步  复习(时间:3分钟)

回顾第一单元有关家乡变化的内容，复习现在完成时态，导入新课。

(通过对第一单元的复习，导入被污染的西山景象。)

T:   Last unit, we have learned some changes in our hometown. Can you say some?

S1:  The roads are wider.

S2:  The buildings are higher and higher.

S3:  The living conditions have improved…

S4:  …

T:   Yes. Many changes have happened in our hometown. Let’s look at the two pictures about the West Hill and discuss the changes between them.

Step 2  Presentation 第二步  呈现(时间:15分钟)

通过比较1a的两幅图画的差异，展开对话，学习部分生词，呈现1a。

1. (利用幻灯片展示1a中的两幅图，师生问答。)

T:  Are there any differences between them?

Ss: Yes.

T:  Let’s look at Picture 1. What can you see?

S1: I can see some flowers and grass.

S2: I can see some butterflies.

T:  Yes, there are some butterflies dancing.

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(板书并要求学生掌握。)

there is/are … doing sth.

T:  What else can you see?
S3: I can see a rabbit.
S4: I can see some houses.
S5: …
T:  (指着蜜蜂。)What’s it?
Ss: It’s a bee./Sorry, I don’t know.
T:  (Yes,) it’s a bee. There is a bee flying.
(板书并要求学生掌握。)

bee

T:  (指着小溪。) What’s it?
Ss: It’s a river.
T:  We can call it stream. And there are some fishes swimming in the stream.
(板书并要求学生掌握。)

stream

T:  We know the West Hill was a beautiful place. Look at Picture 2. Oh, my goodness! What has happened to the West Hill?
(板书并要求学生掌握。)

my goodness

S6:  The rabbit has disappeared.
S7: The fish have died.
S8: The trees have died.
S9: There are no flowers, butterflies, grass, and so on.
T:  Yes, everything has changed. Why?
S10: Because there are many factories.
T:  (指着工厂。)Yes, there are several factories. They are chemical factories.
(板书并要求学生理解。)

chemical

T:  (指着工厂排放出的黑烟，并捂住鼻子做呼吸困难状。) They are making much smoke. It can cause breathing problem.
(板书并要求学生掌握。)

breathe

T: (指着排放的废物。)And they are pouring waste water into the stream.
(板书并要求学生掌握。)

waste

T: From Picture 2, we know the chemical factories are harmful to the animals and plants.
(板书并要求学生掌握。)

harmful be harmful to

2. (要求学生不看书，只听录音，捕捉要点，回答问题，从而提高听力水平。)
T: Close your books. Listen to the tape carefully, then answer the questions.
(出示小黑板上的问题，听录音1a。)

(1)Where are they going to have a picnic? (2)Why does Kangkang say “Oh, my goodness!” ?

3. (核对答案，板书1a的关键词。)

beautiful—fresh—clean—gone—dirty—terrible—waste water

Step 3  Consolidation 第三步  巩固(时间:12分钟)

复述1a，引入本课重点，讲解和操练“直接引语”与“间接引语”，完成1b。
1. (要求学生在限定时间内，根据黑板上的关键词复述对话。)
T: Try to retell1a. You can use the key words on the blackboard and the pictures about West Hill.
Example:
    In the past, theWest Hill was a beautiful place with flowers and grass. We could see bees and butterflies dancing. The air was fresh, the water was very clean and we could see fish swimming. But now, all the flowers, grass, bees, butterflies and fish have gone. The water is so dirty and it smells terrible. Why? Because there are several chemical factories pouring waste water into the stream. So we should protect the environment.
2. (引入语法“直接引语”和“间接引语”。要求学生根据1a回答教师的问题。)
T: What didKangkang say?
(要求学生轮流回答。)
S1:      I’ve been there before.
T: Yes. Kangkang said that he had been there before.
T: Next, please.
S2:      It’s a beautiful place with lots of flowers and grass.
T: OK. Kangkang said that it was a beautiful place with lots of flowers and grass.
T: Next, please.
S3:      The air is fresh and the water is clean, and you will see …
T: So Kangkang said that the air was fresh and the water was clean, and they would see …
(板书以上三个画线句子，要求学生将板书与1a中的原句对比找出不同之处，教师引导和补充。学习“直接引语”和“间接引语”。)

Kangkang said that he had been there before. Kangkang said that it was a beautiful place with lots of flowers and grass. Kangkang said that the air was fresh and the water was clean, and they would see …

3. (让学生完成1b，并作报告。)
T: Fill out the table in 1b, then give a report, using “Kangkang/Maria said …”.

Step 4  Practice 第四步  练习(时间:10分钟)

通过听力训练，引出污染的概念，充分调动学生的积极性，加深对各种污染及其危害的理解，完成2,3a和3b。
1. (播放2录音，学生听后完成2。)
T: We know, without plants and animals, the West Hill isn’t beautiful. So plants and animals are important. Let’s look at the lovely animals in the pictures in 2. Listen to the tape and write down the numbers of the correct pictures.
(若学生没听懂，可再放一遍，核对答案。)
2. (学生看图完成3a。)
T: After listening, do you know what does great harm to animals?
Ss: Pollution.
T:  Yes. There’re many kinds of pollution. Let’s look at the pictures in 3aand match them with the phrases given. Try to guess the meaning of soil.
(板书并要求学生理解。)

soil

  (核对答案。)
3. (让学生用3a的短语完成3b。)
  Tollution has caused many problems. What problems has it caused? Please complete 3b with the phrases in3a.
  (核对答案，并板书influence，要求学生掌握。)

influence

Step 5  Project 第五步  综合探究活动(时间:5分钟)

通过游戏及调查的方式，加深学生对污染及其危害的印象，增强学生的环保意识。
1. Guessing games.
(教师让一学生到讲台，从3a所提供的有关污染的图片中任取一张，正面面向全体学生，背面面向自己。台下学生描述图片上的内容或引起的污染问题，让台上的学生猜出该种污染的名称。)
T: Every one of you can describe the picture. And the student in the front of the classroom tries to tell us what kind of pollution it is.
Example:
  (S1任意抽取一张图片。)
S2 : It’s produced in a factory. (教师帮助学生描述。)
S3 : It smells terrible.
S4 : It’s harmful to our lungs.
S5 : It’s black smoke.
…
S1 : Air pollution.
…
2. Homework: Make a survey.
(调查你们家附近的污染状况，并填写表格，以增强学生的环保意识。)
T:    Now make a survey to study the pollution around your home, and fill out the form.

Pollution	Reason	Effect
Air pollution
Soil pollution
Water pollution
Light pollution
Noise pollution
Litter

板书设计：

Pollution causes too many problems. Section A air pollution                     there be sb./sth. doing sth. soil pollution                   be harmful to … water pollution               Kangkang said that it was a beautiful light pollution                  place with lots of flowers and grass. noise pollution                litter

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Section B

The main activities are1aand 1b. 本课重点活动是1a和1b。

Ⅰ. Teaching aims and demands 教学目标

1. Learn some new words:

weak, produce, chest, anyway

2. Go on learning direct speech andindirect speech:

(1) Mrs. Zhou told Kangkang that she had been like that since the week before.

(2) Mrs. Zhou asked the old lady how long she had been like that.

(3) The journalist asked Mrs. Zhou whether/if she was feeling better then.

  (4) The journalist asked what the environment around that place was like.

3. Learn some expressions about blame and complaint:

(1) It’s difficult for me to breathe.

(2) The bad air makes my chest hurt.

(3) … the factory makes too much noise and I can’t sleep well at night.

(4) I’m always in a bad mood …

(5) … I can’t stand the environment here.

(6) Anyway, I hope the government will solve this problem soon.

Ⅱ. Teaching aids 教具

图片/教学挂图/录音机/小星星/游戏纸条

Ⅲ. Five-finger Teaching Plan 五指教学方案

Step 1  Review 第一步  复习(时间:6分钟)

检查上节课的作业，通过学生对调查结果的汇报和转述，复习直接引语和间接引语。

T: Is there air pollution around your home?

S1: Yes. There are several chemical factories near my home. They make terrible gas. I often feel sick.

T: What did S1 say just now?

S2: S­1 said that there were several chemical factories near his/her home.

S3: S1 said that they made terrible gas.

S4: S1 said that he/she often felt sick.

(其余五种污染用同样的方法进行转述。)

…

Step 2  Presentation 第二步  呈现(时间:12分钟)

继续展示有关环境污染的图片，开展对话，学习生词，呈现1a。

1. (教师用Section A的1a进行导入，利用图片引出新的词汇。)

T: From1a, Section A, we know Kangkang and his friends planned to go for a picnic. But two days later, when the children reached the West Hill, would they have a picnic there?

Ss:No.

T: Why?

Ss:The flowers, grass and fish have gone. The chemical factories are pouring waste water into the stream.

T: (出示工厂排放着浓烟的图片。)And what is the factory making?

Ss:It’s making smoke.

T: Yes, it’s producing smoke. It’s producing terrible gas. (教师做捂鼻皱眉状。)It’s difficult to breathe.

(板书并要求学生掌握produce；理解gas。)

produce, gas


T: The terrible gas can make people’s chest hurt. (教师做捂胸皱眉状。)

(板书并要求学生掌握。)

chest


T: What’s more, the factory makes too much noise. What problems does noise pollution cause?

S1:Maybe people can’t sleep well.

T: Yes, it makes people weak, and people may be in a bad mood.

(板书并要求学生掌握。)

weak


T: Pollution causes too many problems. Anyway, we should do something to stop it.

(板书并要求学生掌握。)

anyway


2. (呈现1a图片。)

T:  Look at the picture. Who are they in the picture?

Ss: They are Kangkang and Mrs. Zhou.

T:  What other things can you see?

S2: I can see some dead fish.

S3: The bird in the tree is dying.

S4: Some chemical factories are producing terrible gas.

S5: Factories are pouring waste water into the river.

…

T:  Great! So it causes water pollution and air pollution. Look at Kangkang and Mrs. Zhou. What are they talking about? Listen to the tape, and then answer the question.

(教师放1a录音，学生听后回答。)

Ss:They are talking about pollution.

T: Very good.

3. (学生齐读课文，找出疑难点，教师解释，并板书要点，要求学生掌握短语can’t stand及句型How long …。)

can’t stand (doing) sth.

How long have you been like this?

The bad air makes my chest hurt.

I’m always in a bad mood …

Anyway, I hope the government will solve this problem soon.


Step 3  Consolidation 第三步  巩固(时间:9分钟)

采用表演及竞赛的方法，充分调动学生积极性，继续巩固直接引语与间接引语，巩固1a，完成1b。

1. (让学生再读1a对话，并要求和同桌一起表演，完成1a。)

  T: Read1aaloud, and try to act out the dialog in pairs.

2. (学习1b。将学生分成四组进行比赛，看哪组同学的观察思维能力强。每发现一条变化规则，即为本组加一颗星。教师可适时地引导。)

T:   Read 1b carefully, and try to find out the changing rules. Let’s have a match.

S1:Kangkang asked the old lady how long she had been like that.

S2: The old lady said she had been like that since the week before.

S3:Kangkang said that was too bad.

S4:Kangkang asked Mrs. Zhou whether/if she had seen a doctor.

…

(教师进行补充和总结，并对获胜组进行表扬和奖励。)

3. (学生独立完成1b。)

  T: Complete 1b by yourselves in two minutes.

(必要时教师给予帮助。)

Step 4  Practice 第四步  练习(时间:12分钟)

设置情景展开对话，强化疑问句变成间接引语的操练，完成2；展开小组讨论，完成3。

1. (提醒学生注意一般疑问句变成间接引语的规则。)

  T: After Kangkang wrote to the newspaper about Mrs. Zhou’s problems, a journalist interviewed her. What are the journalist’s questions? Let’s look at the first picture in 2.

Ss: Are you feeling better now, Mrs. Zhou?

T: Right. The journalist asked Mrs. Zhou if she was feeling better.

2. (师生对话，让学生先口头练习，然后书面完成2。)

  T: What is Mrs. Zhou’s answer?

Ss: She’s feeling even worse.

T: Good. Please answer it with indirect speech.

Ss: Mrs. Zhou’s said that she was feeling even worse.

T: Then, what did the journalist ask?

Ss: What is the environment around this place like?

T: Please answer it withindirect speech.

Ss: He asked what the environment around that place was like.

  T: Complete the rest sentences with direct speech or indirect speech.

…

  (核对答案。)

3. (三人一组练习：一人问，一人回答，一人作汇报，要求用到所学的间接引语知识。完成3。)

  T: Discuss the questions in 3, and work in groups of three. One asks, another answers and the third one reports it using indirect speech. Two minutes for preparation.

Step 5  Project 第五步  综合探究活动(时间:6分钟)

通过做游戏的方式，继续巩固直接引语与间接引语，布置有关环境内容的作文，加强本课功能句型的运用。

1. Play a game.

(传话：分给每组第一位同学一张纸，上面事先写好同一句话How is the environment around this school?(即直接引语)。这位同学要以间接引语的形式(The teacher said/asked…)口头向第二个同学传话，然后依次往后传，最后接到话的同学要使用直接引语说出原句。传得又快又正确的组获胜。注：各组人数要一样多。如果时间允许，可以换一个句子继续游戏。)

2. Homework:

Write to the government about the pollution problems around your home.

板书设计：

Pollution causes too many problems.

Section B

produce terrible gas       Kangkang asked Mrs. Zhou how long she had been like that.

                     Mrs. Zhou told Kangkang that she had been like that since the

week before.

can’t stand (doing) sth.   The journalist asked Mrs. Zhou whether/if she was feeling

better then.   

…                                 …


Section C

The main activity is1a. 本课重点活动是1a。

Ⅰ. Teaching aims and demands 教学目标

1. Learn some new words:

coal, deaf, print, disturb, rubbish

2. Learn some useful sentences about noise pollution:

  (1) … noise is also a kind of pollution and is harmful to humans’ health.

  (2) People who work and live in noisy conditions go deaf easily.

  (3) … many teenagers inAmericacan hear no better than 65-year-old people do, …

3. Improve the sense of protecting the environment.

Ⅱ. Teaching aids 教具

图片/录音机/小黑板

Ⅲ. Five-finger Teaching Plan 五指教学方案

Step 1  Review 第一步  复习(时间:5分钟)

总结Section A与Section B内容，以环境污染的危害为主题，展开复习。

(教师用上两节课的内容进行复习，导入1a。)

T:  We have known some kinds of pollution. Can you list them?

Ss: Yes. Such as water pollution, soil pollution, light pollution, air pollution, noise pollution and so on.

T:  What problems do they cause?

S1: Water pollution can make people sick.

S2: Soil pollution causes unhealthy food.

S3: Light pollution hurts our eyes.

S4: Air pollution causesbreathing problems.

…

T:  Very good. In this lesson, let’s talk about noise pollution.

Step 2  Presentation 第二步  呈现(时间:15分钟)

利用图片导入生词教学，同时结合环境污染内容，创设情景，呈现1a。

1. (展示图片，导入生词。)

T: Let’s look at the picture.

(教师展示图片一。)











T: (指着图片。) What is he burning?

Ss: Coal. (帮学生回答。)

(板书并要求学生掌握。)

coal


T: Can burning coal cause pollution?

Ss:Yes. Burning coal can cause air pollution.

T: Good.

(教师展示图片二。)



  T: Look at the picture. People are producing electricity by wind. (教师让学生猜测词义。 )

(板书并要求学生理解。)

electricity


T: (指着图片。) Can it cause pollution?

  Ss: No.

T: Great! It can’t cause pollution.

2. (完成1a中的读前问题，核对答案。)

  T: OK. Look at the phrases of1 in1a, and check (√) which causes pollution.

  …

  (一分钟后。)

  T: You know, playing loud rock music at midnight is a kind of pollution. Why?

Ss:      Because it can make lots of noise.

T: Excellent. It not only disturbs others but also does great harm to people’s hearing.

(板书并要求学生掌握。)

disturb

do harm to=be harmful to


T: Let’s look at the picture.

(教师展示图片三。)



T: (指着图片。) What are they doing?

Ss: They are printing newspapers. (教师帮助学生回答。)

(板书并要求学生掌握。)

print


T: The machines are making loud noise. Can they hear each other clearly?

Ss:No.

T: Yes. If they work there for a long time, they may go deaf. (教师指着耳朵领读go deaf并解释。)

T: That is to say, they will have hearing loss.

(板书并要求学生掌握deaf，理解hearing loss。)

deaf

hearing loss

  
   


(教师展示图片四。)

T: (指着图片。) They are working in the sawmill. And it also makes loud noise. It may disturb the people nearby. They can’t sleep well.

(板书并解释，要求学生了解sawmill；理解nearby。)

sawmill

nearby


T: So noise pollution is harmful to humans’ health. Right?

Ss: Yes.

3. (播放1a录音，学生跟读并找出文中涉及的几种噪音污染。)

  T:  OK. Let’s listen to the passage in1a. Try to find out how many kinds of noise pollution are mentioned in the passage and what they are.

  (小黑板出示答案，师生共同核对。)

5种噪音污染：

①noise from a printing factory

②noise from airports

③noise caused by loud pop music

④a loud noise made in public

⑤noise produced by cars and machines


  (核对答案后，继续呈现生词。)

T:   What are the bad effects caused by noise pollution?

(板书，解释并要求学生理解。)

effect


Ss: It makes people sick or deaf.

T:   Are there any countries trying to solve the environmental problems, including noise pollution?

Ss: Yes, there are.

(板书，解释并要求学生了解。)

Including


4. (呈现1a，学生找出疑难点，教师解释。)

  (板书要点并要求学生掌握。)

no better than


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

继续巩固1a，完成1b与1c。

1. (根据课文内容，完成1b。)

T:  OK. Read1aagain and finish 1b by yourselves.

(板书并要求学生掌握rubbish；理解title。核对答案。)

rubbish, title


2. (让学生两人一组读课文，讨论1c的四个句子分别描述的是课文中的哪一段。)

T: Read the passage again, and look at the four sentences in1c. Which paragraphs should they belong to?

(核对答案，让学生回答这样选择的理由。)

Step 4  Practice 第四步  练习(时间:10分钟)

将1a中与噪音污染有关的内容，与现实结合，引导学生列举噪音污染的各种来源，并提出处理意见。

1. (教师用课文中的噪音污染来启发学生找出身边的噪音污染。)

T: We have learnt noise is a kind of pollution. What cause noise pollution around us?

(让学生分组讨论，教师引导学生说出身边的噪音污染。)

S1: The students in the next room are knocking on the desk.

S2: Some students are talking loudly in the classroom.

S3: Someone is typing the keyboard strongly.

S4: Some people answer the telephone call aloud.

S5: …

2. (教师在列出噪音污染的各种来源后，引导学生提出解决问题的方法，从而培养学生的环保意识。)

T: Everyone knows noise pollution is harmful to our ears. But how can we solve these problems?

S6: Talk to each other in a low voice.

S7: Try to find a proper place to answer the telephone.

S8: Type the keyboard softly.

S9: Find a proper place and proper time to enjoy music.

S10: …

Step 5  Project 第五步  综合探究活动(时间:5分钟)

提出两种不同方案（可任选其一），通过小组活动，采取调查的方式加强学生的环保意识，完成2。

方案一：

1. (通过本节课的学习，让学生认识到噪音污染的来源及其危害。并通过学生的小组活动，即调查各种各样的噪音污染，更加有效地改善环境，加强学生的环保意识。)

T: Make a survey in groups about the noise pollution. Before you do it, I’d like to say something about noise pollution in our school, in my home and neighborhood.

(通过教师的示范，降低练习难度。)

T:  In our school there is noise pollution everywhere … And in my home, my son likes NBA games, and he often keeps the TV in a high volume … And in some public places, people speak loudly…

网站工作室

Discuss in groups and fill out the form.

Place Name	At school	At home	In other public places
S1
S2
S3

2. (让学生根据调查表进行报告。)
T: Please report your work to the class.
方案二：
(小组活动，四人一组，引导学生思考并讨论他们身边实际存在的各种类型的污染及其危害，并由一名小组成员记录整理，最终以书信的形式将问题反映到报社。)
T: Work in groups of four, think about what kinds of pollution we have in our hometown and discuss the bad effects caused by them. Write them down and mail it to the newspaper after school.
4. Homework:
Write a letter to an editor according to the report.
Example:
Dear editor,
    I’m writing to you because …
板书设计：

Pollution causes too many problems Section C                             be harmful to … go deaf                  do harm to … no better than    Noise is also a kind of pollution and is harmful to humans’ health.                        … many teenagers inAmericacan hear no better than 65-year-old people do.

Section D

The main activities are1a和3. 本课重点活动是1a和3。

Ⅰ. Teaching aims and demands 教学目标

1. Learn some new words:
create, industry, blood
2. Review direct speech andindirect speech:
  (1) Mrs. Zhou said that she was feeling even worse.
  (2) The journalist asked Mrs. Zhou if/whether she was feeling better then.
(3) The journalist asked what the environment around that place was like.
3. Review some kinds of pollution and the problems caused by them.

Ⅱ. Teaching aids 教具

图片/录音机/小黑板

Ⅲ. Five-finger Teaching Plan 五指教学方案

Step 1  Review 第一步  复习(时间:2分钟)

复习噪音污染，巩固Section C。
T:   Is noise a kind of pollution?
Ss: Yes.
T:   What can cause noise pollution?
S1: The machines in some factories.
S2: Planes.
S3: Loud pop music.
S4: Cars.
S5: Making a loud noise in public.
S6: …
T:   Great! Please list some other kinds of pollution around us.
Ss: Air pollution, light pollution …
T:   OK, let’s talk about the harm that the pollution causes.

Step 2  Presentation 第二步   呈现(时间:15分钟)

利用图片，设置对话，重现不同种类的污染，导入生词，呈现1a。
1. T:  Many things making loud noise can cause noise pollution. What problems does noise pollution cause?
S1: Noise pollution can cause hearing loss.
S2: It makes people sick or become deaf.
S3: It also makes people uncomfortable and unpleasant.
T:  Very good, too much noise can cause high blood pressure as well.
(教师板书新词并释义，且要求掌握blood；理解pressure。)

blood, pressure

2. T: Noise pollution is harmful to people. Do you know any other kinds of pollution? Let’s look at this picture.
(教师展示图片一。)

T:   What kind of pollution is it?
Ss: Soil pollution.
T:   That’s right. What causes soil pollution?
S4: People use too many chemicals in their fields.
T:   So they destroy the soil. And it causes unhealthy food.
(教师板书，释义并要求学生理解。)

destroy

(教师展示图片二。)
T:   Look at this picture. What kind of pollution is it?
Ss: Litter.
T:   Good. Litter is everywhere. It makes our environment dirty.
  (教师展示图片三。)

T:   (指着图片中的浓烟。)What kind of pollution is it?
Ss: Air pollution.
T:   Yes. What creates air pollution?
(板书并讲解，且要求学生掌握。)

create

Ss: Burning coal.
T:   With the development of industry, air pollution is becoming more and more serious. And it can causebreathing problems.
(板书并讲解，且要求学生掌握。)

industry

(教师展示图片四。)





T:        Look at the picture. What kind of pollution is it?
Ss:      Light pollution.
T:        Yes. Look at the strong and changeable light. It’s bad for eyes.
3. T:  From the pictures, we know pollution is bad for our health in many ways. If there is no pollution on the earth, what will the earth be like?
(板书并讲解。)

in many ways

Ss:      Maybe our earth will be greener and more beautiful.
T:        Great! We should protect our planet from now on. OK, let’s read1aand fill in the blanks with the proper forms of the words and phrase above.
(学生用所给的单词和短语的正确形式填空，师生核对答案。)
4. (学生再次阅读1a，找出重点和疑难点，教师讲解。)

Step 3  Consolidation 第三步  巩固(时间:8分钟)

完成1b，拓展1a，利用小组讨论的形式，引导学生认识不同污染的危害并提出处理建议。
1. (听录音，跟读1a。)
T: Listen to the tape of1a, and read after it.
(让学生再读1a，完成1b。)
T: Read1aagain, then fill out the table in 1b.
(核对答案。)
2. (学生分组讨论。)
T:  There’re so many kinds of pollution around us. And they affect our environment and health. How can we deal with them? Discuss in groups of four.
S1: Air pollution causes sore eyes andbreathing problems. We had better pull down the polluting factories.
S2: Litter makes our environment dirty. We should throw the rubbish into the dustbin.
S3: Noise pollution can make people deaf. We should make some rules to stop it.
S4: …
(教师总结。)
T:  Good answers. Let’s try our best to be greener people, OK?
Ss: OK!

Step 4  Practice 第四步  练习(时间:15分钟)

采用对话及练习的方法，巩固2a与2b。
1. (教师通过复习西山的污染来练习2b的句子。)
T: (教师展示Section A，1a中的第二幅图和Section B，1a中的图。)
What can you find in the pictures?
S1:       Oh, my goodness! There is water pollution. The fish have gone.
S2:       There are several chemical factories pouring waste water into the stream.
S3:       There is noise pollution. Mrs. Zhou can’t sleep well.
S4:       …
T: DoesKangkang still want to have the picnic there?
Ss:      Of course not. The flowers and grass have gone! It smells terrible.
T: Does Mrs. Zhou still want to live there?
Ss: No. She hopes the government will solve this problem soon. Noise is harmful to humans’ health.
(复习2b，听录音并跟读。)
T: Now let’s listen to the tape of 2b, and read after it.
(教师讲解并强调这些功能用语。)
2. (复习2a，巩固直接引语与间接引语的用法，完成练习。)
T: Because of the pollution on theWest Hill, a journalist interviewed the old lady. What did the journalist ask her? Do you still remember?
Ss: Yes.
S5: He asked the old lady if …
T: What was the old lady’s answer?
S6: She said that …/She told the journalist …
(继续上面的问答，练习2a的句子。)
3. T:  Look at the small blackboard, please retell the following sentences withindirect speech within two minutes.
  (小黑板呈现练习题。)

(1)Kangkang said, “The fish have gone.” (2)Jane asked the old lady, “Have you seen a doctor?” (3)The teacher asked, “What does noise pollution cause?”

(核对答案)

Step 5  Project 第五步  综合探究活动(时间:5分钟)

利用有关污染的图片，开展小组活动，并以“保护环境做绿色使者”为主题设计墙报；课后完成命题作文。
1. (教师收集一些有关污染的图片。让学生描述图片中的污染属于哪一种。然后学生分组讨论污染所带来的影响。做一个各类污染及其危害的墙报，号召人人成为环保人，完成3。)
T: Look at these pictures, and discuss in groups about different kinds of pollution and the harm caused by them. Then make a wall newspaper to call on people to be greener persons.
2. Homework:
Write an article. The title is “My Ideal School” or “My Ideal City”.
(板书设计)

Pollution causes too many problems. Section D high blood pressure                               Burning gas, oil and coal create air pollution. with the development of industry            With less pollution, our planet will become… in many ways