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(共36张PPT)
Unit 13 We’re trying to save the earth!
R·九年级全一册
Section A 1a-2d
Learning objects （学习目标）
By the end of the class, you will be able to …
1. Learn curriculum words and useful expressions:
litter, bottom, fisherman, coal, ugly, advantage...
2. Talk about pollution and environmental protection.
3. Improve your listening skills through listening
trainings.
Look at the pictures and think
How is the earth on the left different from the earth on the right
Why is this happening to the earth
pollution
noise pollution
white pollution
water pollution
air pollution
light pollution
soil pollution
Our earth is hurt by all kinds of pollution.
What kind of pollution can you think of on the earth
Brainstorm
_______ pollution
_______ pollution
air
water
Look and fill in the blanks. What kind of pollution does the following picture belong to
_______ pollution
noise
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
1a
noise pollution air pollution water pollution
loud music
planes
building houses
mobile phones
machines
crowds
cars
planes
factories
smoking
building houses
burning
power plants
rubbish
littering
ships
factories
waste water
industrial waste
noise pollution 噪音污染
noise名词，意为“噪音”，pollution为不可数名词，意为“污染；污染物”，其动词形式为pollute ，意为“污染” 。
【辨析】noise, sound与voice
noise常指不悦耳、不和谐的嘈杂声。sound泛指自然界的各种声音。voice一般指人的嗓音，如说话、唱歌、谈笑声等。
Before listening: Make a prediction
Tony suggests going swimming in the river. But Mark doesn’t want to go. Why Can you guess the reason why Mark doesn’t want to go swimming in the river
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.
really dirty
rubbish
fish
1b
fisherman可数名词，意为“渔民；钓鱼的人”，由“fisher （n. 渔夫） + man （n.男人）”构成。复数形式是fishermen。
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.
litter
waste
government
close down
clean up
【辨析】litter，rubbish 与waste
litter指随手丢弃的垃圾。
rubbish指任何成堆的、破损的、用过的或无用的东西。
waste指任何被丢弃的东西。
Listening skill: Listen to the missing parts
and write down the missing words.
Listen and answer the questions.
1. Why doesn’t Mike want to swim in the river
2. What was the river like in the past
3. Why is this happening to the river
Because the river was really dirty.
It used to be so clean.
Because people are throwing litter into the river. Factories are also putting waste into the river.
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.
Tapescripts:
下午晚些时候
河底
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.
不可能！
再也不是了。
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.
关闭
参与
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!
used to意为“曾经……；过去……”，其后接动词原形，表示过去经常发生的动作或存在的状态。used不随人称和时态的变化而变化。
play a part in意为“参与……”，in是介词，其后可接名词、代词或动词-ing形式。其同义短语为take part in。
Role-play
The air is dirty. The smoke from
factories is black.
But it used to be so clean and fresh!
We should write to the government and
ask them to close down the factories.
Yes, but people are polluting the air.
Can you make your
own conversations
Before listening: Let’s guess.
The interviewer is talking with
Jason and Susan. What do you
think the topic of their
conversation is
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
Listening skill: You don’t have to hear
every word. Just pay attention to key words.
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.
cars
pollute
more
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 ones.
are throwing away
public places
Listening skill: Mark the key words in the
sentences. Then listen for the key words and
record the missing words.
Listen and judge true (T) or false (F).
Susan thinks the air is badly polluted.
Susan used to see the stars clearly.
There are fewer cars on the road these days.
Factories that burn coal also pollute the air with a lot of black smoke.
There’s too much rubbish and waste in the streets.
Jason
more
Tapescripts:
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.
①
②
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.
③
④
Use the information in 2a and 2b to role-play
conversations between Jason and Susan.
2c
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 ...
There is too much rubbish and waste in our city.
Yes, people are littering in public places.
Work in pairs and imitate the dialogue below to talk about the environmental problems you’ve seen.
...
...
This is turning beautiful places into ugly ones.
Before reading: Let’s guess.
How do Jason and Susan solve these environmental problems mentioned above
Pollution Ways to solve the problem
air pollution
waste pollution
Bring a ____ to go shopping.
bag
wooden
Take the bus, ______ or ride a bike instead of driving.
plastic
rubbish
Read and complete the chart.
Never take ______ chopsticks or _____ forks when buying takeaway food.
Throw ________ in the bins.
subway
2d
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 of bike riding. It’s good for
health and it doesn’t cost anything!
instead of 意为“代替，而不是”，其后一般接名词、代词或动词-ing形式作宾语。
instead是副词，意为“代替；相反”，常位于句首或句末作状语。
cut down“动词＋副词”型短语，意为“削减；缩小（尺寸、数量或数目）”。
have an/the advantage over 胜过……
take advantage of 利用……
be good for 对……有益
Sth. cost(s) (sb.)+金钱.
某物花费（某人）多少钱。
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 forks when I buy
takeaway food. I use the ones at home.
可数名词，意为“外卖食物”。
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!
make a difference意为“影响；有作用”。make a difference to意为“对……产生影响”。difference前面可加修饰语，如 big, great等，表示影响的程度。
lead to意为“引起（结果等）；通向（某地）”。
remember to do sth.记得去做某事（事情还没有做）
remember doing sth.记得做过某事（事情已经做了）
Watch and read
Retell the conversation as prompted below.
Ways to cut down air pollution
take the bus
take the subway
ride a bike
Ways to cut down waste pollution
bring a bag to go shopping
never use wooden chopsticks or plastic forks
throw rubbish in the bins
Summary
Words & phrases: litter, bottom, fisherman, coal , ugly, advantage, cost, wooden, plastic, make a difference, instead of...
Sentences:
① Everyone in this town should play a part in cleaning it up!
② To cut down air pollution, we should take the bus or subway
instead of driving.
③ Our actions can make a difference and lead to a better future!
1. Review key words, sentences and language points.
2. Practice the conversation on Page 98 and talk
about your opinions about solving environmental
pollution with your partners.
Homework
Protecting our environment is a duty for everyone.

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