人教版九年级全册 Unit 13　We're trying to save the earth! Section A 教案

Unit 13 We’re trying to save the earth!
Section A 1a-2d 教学重难点
学情分析:
九年级学生对环境污染已经比较了解，概括能力和推理能力也有很大的提高，环境意识和社会责任感更加强烈。因此，学生对本课时的内容兴趣浓厚，参与积极。另一方面，由于学生的社会经验相对缺乏，对于怎样全方位解决环节污染问题，他们需要通过讨论活动，把语言学习和实际交流结合起来，从而形成相对完整和相对全面的认识。
一、教学目标：
1. 语言知识目标
重点词汇：litter,bottom,fisherman,coal,ugly,advantage,cost,wooden,plastic。
重点句型：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: 学生能模仿听力原文，能运用听力材料中的知识，口头谈论噪音污染，空气污染，水污染，土地污染产生的因素以及如何减少这些污染。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: 学生能口头运用现在进行时表达环境污染的现状，运用情态动词表达应该采取的措施。 有
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：现在进行时，情态动词和used to 句型。
【课前准备】收集有关环境污染的资料、准备录音机、多媒体课件，学案
【教学方法】任务型教学法、情景交际法、自主学习和合作学习相结合。
三、整体设计
教学过程设计
I. Presentation
Show the picture of the earth and tell students the earth is polluted now.
For example: (1) The factories that burn coal pollute the air with a lot of black smoke.
(2) Factories put waste into the river.
(3) People should throw away litter in the bin.
(4)There are more cars on the road.
II. Learning
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
loud music cars rubbish planes littering ships factories smoking building houses mobile phones
noise pollution air pollution water pollution
____________ ___________ _____________
____________ ___________ _____________
____________ ___________ _____________
____________ ___________ _____________
Keys : noise pollution loud music planes mobile phones building houses
air pollution factories smoking cars building houses
water pollution ships rubbish littering factories
III. Listening
1. 1b Listen and complete the sentences.
What was the problem The river was _____________. Even the bottom (底部) of the river was full of ________. There were no more ______ for fishermen (渔民) to catch.
What caused the problem People are throwing _______ into the river. Factories are putting ______ into the river.
How should the problem be solved We should write to the ____________ and ask them to ___________ the factories. Everyone should help to __________ the river.
Keys: really dirty rubbish fish litter waste government
close down clean up
2. Listen again and check (√) the sentences you hear.
1) We could go fishing in the river.
2) The river was really dirty.
3) The river has always been the nicest river in this town.
4) We should ask the teachers for help.
Keys: 2 3
IV. Practice
1. Role-play the conversation in 1c.
Mark: The river was dirty. Even the bottom of the river was full of rubbish.
Tony: But it used to be so clean!
Mark: Yes, but people are throwing litter into the river.
Tony: Everyone in this town should play a part in cleaning it up!
2. Make conversations using the pollution in 1a.
A: The river has always been the nicest river in this town.
B: Yes, it used to be so clean.
A: But I was there last weekend and the river was really dirty.
B: What caused the problem
A: People are throwing litter into the river.
B: What should we do
A: Factories are also putting waste into the river.
B: Yes, everyone in this town should play a part.
A: We should write to the government and ask them to close down the factories.
B: What else can we do
A: Everyone should help to clean up the river.
V. Language points
1. We’re trying to save the earth! 我们正在竭尽全力拯救地球!
try to do =try one’s best to do 努力去做某事。
e.g. Every student should try to study hard in order to study in a university.
为了进入大学学习，每个学生都应该努力学习。
2. Here are some words related to different kinds of pollution.
be related to 与…有关
e.g. I am not related to him in any way. 我和他无任何关系。
3. Everyone in this town should play a part in cleaning it up!
play a part in 在……方面起作用
e.g. A good diet plays a large part in helping people live longer.
健康的饮食在帮助人们长寿方面起着非常大的作用。
play a part 在……中扮演角色
e.g. He was invited to play a part in this TV play.
他被邀请参加这个电视剧的演出。
4. Even the bottom of the river was full of rubbish.
Yes, but people are throwing litter into the river.
litter 和 rubbish 都可指“垃圾”，用作不可数名词。
rubbish 指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。
litter 指“(室内或公共场所)乱扔的废物(纸屑、不要的包装纸、废瓶等)”还可回收
e.g. Throw the rubbish out. 把垃圾扔出去。
　　 The room is full of rubbish. 房间里堆满了垃圾。
　　 Pick up your litter after a picnic. 野餐后将废弃物收拾好。
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 Solving problems
air pollution
waste pollution
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: 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. Try to memorize the new words and language points.
2. Listening to the materials of 1b, 2b . Then recite them.
3. The earth is badly polluted. Please think of what we can do to save the earth and make a poster to tell more people to save the earth.
板书设计
Unit 13 We’re trying to save the earth !
Section A 1a-2d
Forms of pollution Causes
Air pollution Factories, cars, burning.
Water pollution Factories, rubbish, ships.
Land pollution Rubbish, batteries.
Noise pollution Loud music , crowds, cars.
教学反思
本课主要以学生的听和说为任务，围绕水污染，空气污染和土地污染的表现，污染原因，以及治理措施，由浅入深，层层递进。视频的应用，极大地提高了学生的兴趣，增强了他们拯救地球的责任感，也提供了他们参与课堂的积极性。听力活动的听前准备设计合理，为学生顺利完成听力任务做好了铺垫。教学重点和难点是运用现在进行时，现在完成时，被动语态结构，情态动could等和used to do something结构，进行表达。学生通过听、读、角色扮演、练习和总结，在活动中掌握了教学重点，突破了难点。
Unit 13 We’re trying to save the earth!
Period 1 1a-2d 学案
学案设计
【课型】 听说课
学习目标
1.能听懂什么是水污染、土地污染和空气污染,引起这三种污染的因素,以及解决污染的措施。
2.能模仿听力原文,能运用听力材料中的知识,口头谈论噪音污染、空气污染、水污染、土地污染的产生因素及如何减少这些污染。
3.能掌握本课重点词汇:litter,bottom,fisherman,coal,ugly,advantage,cost,wooden,plastic。
4.能口头运用现在进行时表达环境污染的现状,运用情态动词表达应该采取的措施。
学习过程
【自主学习】
1.请在课前会拼读并熟记下面的单词。
litter,bottom,fisherman,coal,ugly,advantage,cost,wooden,plastic
2.请在课前观察第97页的图片,并思考和搜集有关噪音污染,空气污染和水污染的产生因素。
noise pollution:
air pollution:
water pollution:
【新课导入】
1.Have a free talk about pollution.
2.What can cause each kind of pollution
【新知呈现】
Ask students to look at the pictures in 1a and ask them two questions:
What can you see in each picture
What kind of pollution does it cause
【新知学习】
Teacher can ask students the following question:What else can cause each kind of pollution Then ask students to fill in the chart below.
Pollution Causes
Air pollution
Water pollution
Noise pollution
Land pollution
【拓展提升】
Write a passage about different kinds of pollution.
There are mainly four kinds of pollution.They are air pollution,noise pollution,water pollution and land pollution.The air is polluted because .There’s also some noise pollution.There are many causes,such as .And the water pollution is caused by .Some land is polluted because .
【跟踪训练】
根据句意用take,spend,pay或cost的适当形式填空
1.This house us lots of money.
2.My mother 300 yuan on her new dress.
3.It usually me 15 minutes to walk home from my office.
4.It is worth some time taking exercise every day.
5.I 1,000 yuan for the new bike yesterday.
【课堂练习】
用动词的适当形式填空
1.The river used to (be) really clean.
2.There are no more fish for to catch (fisherman).
3.Everyone should play a part in (clean) it up!
4.Using (wood) chopsticks is bad for the environment.
5.There are other (advantage) of bike riding.
6.People are (throw) litter into the river.
课堂小结
学生先自主学习,再以四人一组形式展开讨论:
1.本课学习了哪些重点、难点内容
2.对节课还有哪些疑问
自我反思
1.我的收获:
Words and expressions:
Sentence-
2.学习本节课后,我能用英语进行 .
3.我的易错点: .
参考答案
【跟踪训练】
1.cost 2.spent 3.takes 4.spending 5.paid
【课堂练习】
1.be 2.fishermen 3.cleaning 4.wooden 5.advantages 6.throwing
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