Unit 13 We’re trying to save the earth!
Section A 1a-2d教案
【教学目标】
1. 掌握与环境污染和环境保护相关的词汇和句型。
2. 能听懂有关环境污染的对话内容。
3. 能够用与污染相关的词汇，对环境污染和环境保护进行简单描述。
4. 引导学生关爱动物，保护环境。
【教学重点及难点】
重点：
1. 掌握有关描述环境污染和环境保护相关的词汇和句型。
2. 能对环境污染和环境保护进行描述。
难点：在具体的语境中复习现在进行时、现在完成时和被动语态。
【教学过程】
Task 1
Step 1 Warming-up
1. Compare 2 pictures and say what city do you like
A clean city A polluted city
2. What kinds of pollution do you know
water pollution air pollution
noise pollution land pollution
【设计意图】通过图片对比，帮助学生了解环境污染及生态破坏的种种现象，并使他们意识到环境保护的危机感与紧迫感。同时，联系身边生活，结合本城市坏境状况，引导学生进一步熟悉话题。
Step 2 Pre-listening
Learn some new words and expressions.
Work on 1a
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
【设计意图】在情境中呈现和操练生词和短语，提高学生的学习兴趣和效率。
Step 3 While-listening
Work on 1b
1.Listen and complete the sentences.
What was the problem The river was ___________. Even the bottom of the river was full of _________. There were no more ____________for fishermen 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.
2. Listen again and answer the questions.
1）What does Tony want to do later this afternoon
2）Why doesn’t Mark want to go with Tony
3）How was the river in the past
3. Listen and read.
Tony: Hey, Mark, maybe we could go swimming in the river later this afternoon.
Mark: I don’t think I want to go, Tony.
Tony: Why not
Mark: I was there last weekend and the river was really dirty. Even the bottom of the river was full of rubbish, and there were no more fish for fishermen to catch.
Tony: No way! It used to be so clean. In fact, it has always been the nicest river in this town.
Mark: Not anymore. I think people are throwing litter into the river. Factories are also putting waste into the river.
Tony: That’s terrible! We should write to the government. They should close down the factories.
Mark: Good idea! But I think everyone in this town should help to clean up the river, too. Everyone should play a part, not just the government.
【设计意图】在听力材料的语境中帮助学生认识目标语言。
Step 4 Post-listening
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!
Task 2
Step 5 Pre-listening
Make their own conversations about the kinds of pollution in 1a.
【设计意图】让学生使用目标语言进行关于环境污染和环境保护的话题讨论，为后面的听力活动做好准备。
Step 6 Work on 2a
1. Listen and circle the kinds of pollution that Jason and Susan talk about.
Step 7 Work on 2b
1. 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 parks into ugly ones.
【设计意图】通过完成听力任务，训练学生对所听内容的整体理解和捕捉细节信息的能力。
Step 8 Work on 2c
1.Use the information in 2a and 2b to role-play conversations between Jason and Susan.
2.What are your ideas for solving the problem of air pollution
3.What are your ideas for solving the problem of waste pollution
Step 9 Work on 2d
1. Watch the video and choose the correct answer.
2. Read and fill in the chart.
3. Role-play the conversation.
【设计意图】通过视听训练和角色扮演，帮助学生加深对示范对话内容的理解，同时也促使学生对该话题有一个完整的认识。
Language points
1. We’re trying to save the earth!
try to do = try one’s best to do 努力去做某事
2. Here are some words related to different kinds of pollution.
be related to 与……有关
3. Everyone in this town should play a part in cleaning it up!
play a part in 在……中扮演角色
4. This is turning beautiful places into ugly ones.
turn… into… 把……变成……
5. 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。
辨析：take, spend, pay & cost
6. 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
【设计意图】巩固本课所学语言点。考查学生的运用能力。
Step 10 Summary
【课堂小结】
1.We have learnt to talk about air pollution, waste pollution and ways to solve the problems.
2. We have listened some listening materials.
3. We have learnt some key words and useful expressions
【课堂训练】
PPT(共52张PPT)
英语（人教版）
九年级全册
English
Unit 13
We’re trying to save the earth!
Section A 1a-2d
Do you like it
a clean city…
1
课堂导入
The earth is polluted.
But…
a polluted city
water
pollution
noise
pollution
land
pollution
air
pollution
What kinds of pollution do you know
pollution
water pollution
air pollution
noise pollution
land pollution
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
1a
loud music cars rubbish planes littering ships factories smoking building houses mobile phones
2
课堂活动
noise pollution
____________________________________________________________________________________________________________
air pollution
______________________________________________________________________________________________________
water pollution
______________________________________________________________________________________________________
loud music
planes
building houses
mobile phones
(machines, crowds)
cars
factories
smoking
building houses
(burning, power plants)
rubbish
littering
ships
factories
(sewage, pesticides)
Listen and complete the sentences.
1b
What was the problem The river was ___________. Even the bottom of the river was full of _________. There were no more ____________for fishermen 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.
really dirty
rubbish
fish
litter
waste
government
close down
clean up
Listen again and answer the questions.
He wants to go swimming in the river.
Because the river was really dirty. Even the bottom of the river was full of rubbish, and there were no more fish for fishermen to catch.
It used to be so clean.
2. Why doesn’t Mark want to go with Tony
What does Tony want to do later this afternoon
3. How was the river in the past
Listen and read.
Tony: Hey, Mark, maybe we could go swimming in the river later this
afternoon.
Mark: I don’t think I want to go, Tony.
Tony: Why not
Mark: I was there last weekend and the river was really dirty. Even the bottom
of the river was full of rubbish, and there were no more fish for
fishermen to catch.
Tony: No way! It used to be so clean. In fact, it has always been the nicest
river in this town.
下午晚些时候
……的底部
曾经……; 过去经常……
Listen and read.
Mark: Not anymore. I think people are throwing litter into the river.
Factories are also putting waste into the river.
Tony: That’s terrible! We should write to the government. They should
close down the factories.
Mark: Good idea! But I think everyone in this town should help to clean
up the river, too. Everyone should play a part, not just the
government.
参与；扮演角色；起作用
关闭
点击，播放视频
Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a.
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!
The air was dirty. The smoke from factories was black.
But it used to be so clean!
We should write to the government and ask them
to close down the factories.
Yes, but people are polluting the air.
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. We’ll try to finish the work in a week.
我们将努力在一周内完成这项工作。
2.Here are some words related to different
kinds of pollution.
be related to 与……有关
e.g. Is the driver related to the accident
司机和这起事故有关吗？
3. 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。
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。
rubbish指“没用的东西（被扔或将要丢弃的无用的东西）”不可回收。
4.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。
Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.
2a
A. land pollution B. air pollution
C. noise pollution D. water pollution
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 parks into ugly ones.
more cars
pollute
are throwing away
public places
Listen and read.
Interviewer: Today we’re talking to Jason and Susan about environmental
problems. Jason and Susan, can you tell us about some of the
problems you’ve seen
Jason: I think one problem is that the air is badly polluted. I hardly
ever see blue skies anymore.
Susan: Yes, and I used to see the stars clearly.
Interviewer: What do you think has caused this problem
Susan: Well, there are more cars on the road these days.
Jason: And factories that burn coal also pollute the air with a lot
of black smoke.
Interviewer: What other problems do you see
Susan: I guess there’s too much rubbish and waste in the streets.
Jason: Yes! Every day people are throwing away things like wooden
chopsticks, plastic bowls and plastic bags.
Susan: They’re also littering in public places, for example, during
picnics in parks. This is turning beautiful places into ugly ones.
Interviewer: You’re right. These are serious problems for our environment.
Next, let’s talk about the things we can do to help.
Use the information in 2a and 2b to role-play conversations between Jason and Susan.
The air has become really polluted around here. I’m getting very worried.
Yes, I used to be able to see stars in the sky.
The problem is that ...
2c
We should walk, ride the bike, take the bus or subway instead of driving.
What are your ideas for solving the problem of air pollution
We should plant more trees.
What are your ideas for solving the problem of air pollution
Use your own chopsticks when you buy takeaway food.
takeaway n. 外卖食物
What are your ideas for solving the problem of waste pollution
We should bring a bag when we go shopping.
We shouldn’t use plastic bags and throw them everywhere.
What are your ideas for solving the problem of waste pollution
We should throw rubbish in the（right）bins.
What are your ideas for solving the problem of waste pollution
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 of bike riding.
It’s good for health and it doesn’t cost anything!
Interviewer: Great ideas! What about waste pollution
Role-play the conversation.
2d
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 forks
when I buy takeaway 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!
Read the conversation in 2d and fill in the chart.
Pollution Ways to solve the problem
Air pollution
Waste pollution
Ride a bike, take the bus or subway instead of
driving.
Bring a bag to go shopping.
Don’t take wooden chopsticks or plastic forks when you buy takeaway food.
Throw rubbish in the bins.
1. We should take _______ or _______ instead of driving.
2. We should also _______ ______ _____. It’s good for health!
3. Bring _______ to go shopping.
4. Never take _________________ or __________ when buying takeaway food.
5. ______________ in the bins and keep public places clean and beautiful.
the bus
subway
ride
a
bike
a bag
wooden chopsticks
plastic forks
Throw rubbish
What should we do
5. …, we should take the bus or subway instead of driving.
instead& instead of
instead为副词，意为“代替；反而”，在句中作状语。
instead of意为“代替；而不是”，后面可接名词、代词、v-ing形式或介词短语等。
Language points
6. So together, our actions can make a difference and lead to a better future!
1) make a difference (to…)产生重大影响或作用，to是介词。
【拓展】
make no difference to 对……没有影响
make some difference to 对……有一些影响
e.g. It makes no difference whether you go today or tomorrow.
The sea air has made some difference to her health.
7. lead to 意为“导致”。
e.g. Eating too much sugar can lead to health problems.
【链接】
lead sb. to ... 可意为“带领某人去……”。
e.g. His pet dog Lucky led us to his house just now.
8. There are other advantages of bike riding.
advantage n. 优点；有利条件
advantage作名词，其反义词为disadvantage“缺点；不利条件”。
take advantage of ... 意为“利用......”。
Before making your decision, you should consider the advantages and disadvantages.
When possible, take advantage of this time to enjoy the nice weather.
2. It’s good for health and it doesn’t cost anything!
cost v. 花费
cost在此处作动词，过去式和过去分词均为cost。
The watch cost me 200 yuan.
【拓展延伸】cost还可作名词，意为“花费；价钱”。
Could you tell me the cost of the trip
【易混辨析】cost, spend, take与pay
例词 主语 宾语 常用结构
cost 物 金钱 sth. cost (s) (sb.) some money某物花费(某人)多少钱
spend 人 时间或金钱 sb. spend (s) some time/ money on sth.某人花费时间/金钱在某事上
sb. spend(s) some time/ money doing sth. 某人花费时间/金钱做某事
take 常用it作形式主语 时间 it takes sb. some time to do sth.做某事花费某人多长时间
pay 人 金钱 sb. pay(s) some money for sth.某人为某物付费
重点短语
write to ... 给……写信
the bottom of the river 河底
throw litter into the river 往河里扔垃圾
clean up ... 把……打扫干净
turn ... into ... 把……变成……
cut down air pollution 减少空气污染
instead of 代替
be good for ... 对……有好处
takeaway food 外卖食品
make a difference 影响；有作用
lead to 带来；导致
点击，播放视频
3
课堂小结
1.We have learnt to talk about air pollution, waste pollution and ways to solve the problems.
2. We have listened some listening materials.
3. We have learnt some key words and useful expressions
Ⅰ. 根据句意及提示，补全句中所缺单词。
1. C can be used to produce electricity.
2. The new car c a lot of money, but it was certainly worth it.
3. There is a w bed, a table and two chairs in this small room.
4. It is a very clean city. You will hardly find l when you walk along the street.
Coal
cost
wooden/wood
litter
4
课堂训练
5. My uncle is a great f and he caught four fish this morning.
6. Some cups in the shop are nice and expensive and the others are u and cheap.
7. Living in this street has a lot of a . The only drawback (弊端) is noise.
fisherman
ugly
advantages
Ⅱ. 根据句意选择方框中恰当的短语填空。
1. What a mess! You should ____________ your room now.
2. Every farmer knows that weather ____________ farming.
3. As we all know, smoking too much can ____________ cancer and many other illnesses.
4. He said he would ____________ us when he left home but we haven’t heard from him so far.
5. The manager asked me to ____________ the report, because he didn’t want to speak too long at the meeting.
clean up
plays a part in
lead to
write to, lead to, clean up, cut down, play a part in
write to
cut down
Ⅲ. 完成句子，每空一词。
1. 牛奶对孩子们的健康有好处。
Milk _____ ______ ______ children’s health.
2. 辛迪，请记得帮我寄信。
Cindy, please _________ _______ ______ me send the letter.
3. 刚才乔重重地摔到楼梯下面。
Joe landed heavily ____ _____ ______ ______ the stairs just now.
is good for
remember to
help
at the
bottom of
4. 我们没有茶。你愿意喝点咖啡代替茶吗？
We don’t have any tea. Would you like coffee ______ _____ tea
5. 人们普遍认为，教育会对一个人的生活产生影响。
People generally agree that education can ____ ___ _______ ____ a person’s life.
6.每人人都应该在保护野生动物方面发挥作（part）
Everyone should___ ___ ___ ____ in protecting wild animals.
instead of
make a difference to
play a part in
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