九年级英语第十三单元A部分2A-2D教案

Unit 13 We’re trying to save the earth!

Section A 1 (2a-2d) 安乐初级中学 苏奇上

一、教学目标： 1. 语言知识目标

基本词汇：litter, advantage, bottom, fisherman, coal, ugly, cost, wooden, plastic,

takeaway, bin, shark, fin, method, cruel. Harmful, chain, ecosystem, industry, law, scientific, afford, reusable, transportation, recycle, napkin, upside, gate, bottle, president, inspiration, iron, work, metal, creativity,

基本词组：be harmful to, at the top(of sth.), take part in, turn off, take action,

throw away, put sth. to good use, pull… down, bring back

基本句型：We’re trying to save the earth! The river used to be so clean. The air is badly polluted.

No scientific studies have showed that shark fins are good for health. We should help save the sharks.

2. 技能目标: 能正确运用现在进行时，现在完成时，被动语态，情态动词和used

to 句型。

3. 情感目标: 有环境危机意识，学会关注环境保护环境。 二、教学重难点：

1. 教学重点：（1）能正确运用现在进行时，现在完成时，被动语态，情态动词

和used to 句型。

（2）保护环境的措施方法。

2. 教学难点：能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。 三、教学步骤: VI. Listening

1. 2a Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.

A. land pollution B. air pollution

C. noise pollution D. water pollution Keys: B A

2. 2b Listen again and complete the sentences.

1) The air is badly polluted because there are ___________ on the road these days. 2) Factories that burn coal also ________ the air with a lot of black smoke.

3) There is also too much rubbish and waste. People _________________ things every day.

4) People are also littering in ______________ like parks. This is turning beautiful places into ugly (丑陋) ones.

Keys: more cars pollute are throwing away public places 3. Listen and answer the questions. 1) Who is the interviewer talking to? 2) What are they talking?

3) What other problems do they see? Keys: Susan and Jason.

The environmental problems.

There’s too much rubbish and waste in the streets. VII. Practice (2c)

Use the information in 2a and 2b to role-play conversations between Jason and

Susan.

Jason: The air has become really polluted around here. I’m getting very worried. Susan: Yes, I used to be able to see stars in the sky. Jason: The problem is that… VIII. Discussion

Ask students what we should do to save the earth. Help students answer, turn off the lights when you leave a room; stop riding in cars; stop using paper towels or napkins; recycle books and paper. IX. Reading

1. Read 2d and complete the chart.

Problems air pollution waste pollution Solving problems wooden (木头的) chopsticks or plastic forks rubbish 2. Role-play the conversation.

Interviewer: Jason and Susan, what are your ideas for solving these problems? Jason: Well, to cut down air pollution, we should take the bus or subway instead of

driving.

Susan: Yeah, or ride a bike. There are other advantages (优点) of bike riding. It’s good

for health and it doesn’t cost (花费) anything!

Interviewer: Great ideas! What about waste pollution?

Susan: Mmm, I think simple things like bringing a bag to go shopping can help. I

started doing that a year ago.

Jason: Me, too. Also, I never take wooden chopsticks or plastic (塑料) forks when I

buy takeaway (外卖食品) food. I use the ones at home.

Susan: And remember to throw rubbish in the bins and keep public places clean and

beautiful for everyone.

Interviewer: So together, our actions can make a difference and lead to a better future!

X. Summary and language points

1. This is turning beautiful places into ugly ones. turn… into… 把……变成……

e.g. The icy rain seemed like to turn into snow. 渐渐地冻雨又变成雪花的模样。 2. It’s good for health and it doesn’t cost anything! cost v. 花费；使付出

指花费金钱，主语通常是物。cost的过去式和过去分词均为cost。

e.g. The new shirt cost Mr Wang 200 yuan. 王先生花了200元买了新衬衫。 How much does the new computer cost? 新电脑花了多少钱？ take, spend, pay & cost

take，spend，pay和cost都可以表示“花费”，但它们的用法各有不同。 1) take多表示花费时间，常用于It takes sb. some time to do sth.这一句型中，其中it作形式主语。

e.g. It usually takes me 40 minutes to cook the dinner.

2) spend多表示花费时间和金钱，主语通常是人，常用于sb. spend(s) some time / money on sth.和sb. spend(s) some time / money (in) doing sth.两种句型。 e.g. David spent 2,000 yuan on the new machine.

My father spends an hour (in) watching the news on TV every day.

3) pay多表示花费金钱，主语通常是人，常用于sb. pay(s) some money for sth.句型。

e.g. Tommy paid 20 yuan for his breakfast yesterday.

4) cost多表示花费金钱，主语通常是物，常用于sth. cost(s) (sb.) some money. 句型。

e.g. The new dress cost Linda 88 yuan.

根据句意用take, spend, pay或cost的适当形式填空。 1) That new car ________ them lots of money. 2) Mona __________ 50 yuan on the books just now. 3) It usually _______ me an hour to do my homework.

4) You should __________ some time practising your pronunciation. 5) My brother _______ 6, 000 yuan for the new computer yesterday. Keys cost spent takes spend paid

3. So together, our actions can make a difference and lead to a better future! make a difference (to…) 表示(对……)产生影响或作用

e.g. Do you think his words would make any difference to the final decision? 你认为他的话会对最后的决定产生影响吗？

The new teacher always encourages little Tom. This has made a big difference to him.

新来的老师总是鼓励小汤姆，这对他影响很大。 XI. Exercises

用动词的适当形式填空。

1) We’re trying _______ (save) the earth. 2) There used to_____ (be) clean and beautiful.

3) There are too many ______ for ________to catch (fish). 4) It’s bad for environment to use _________ (wood) chopsticks. Keys: to save be fish fishermen wooden XII. Think about

The earth is badly polluted. Please make a poster and think of what we can do. XIII. Homework

1. Copy the new words and remember them. 2. Read the listening materials of 1b, 2a.

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