Unit 13
First, let’s watch an MV. It is a famous song. Its name is Earth Song .Do you know who sang it ? It was sung by Michael Jackson.

What is it about?
After you watch it, how do you feel?
All of us are shocked.
It calls on everyone to protect the earth.
Unit 13
We are trying to save the earth.
Section A 1a-2d
Language Goal
Talk about pollution
and environmental protection
Objectives
To talk about air pollution, water pollution and sound pollution.
To think about ways of protecting the environment.
To learn the new words:
The earth is polluted.
Lead-in
Because of pollution, our sky isn’t blue any more.
Because of pollution, the water isn’t clean any more.
Because of pollution, more and more people suffer from cancer.
Because of pollution, many animals were killed.
Because of pollution, more and more animals don’t have places to live in.
There are more and more disasters（灾难）on the earth because of pollution
air pollution
The factories that
burn coal pollute
the air with a lot of
black smoke.
n. 煤炭
Can you think of the different kinds of pollution?
Factories put waste into the river.
water pollution
noise pollution
There are more
cars on the road.
litter v. 乱扔
n. 垃圾
Rubbish， waste
垃圾，废弃物
People should throw away litter in the bin.
n. 垃圾箱
land pollution
1a
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
noise pollution
____________
____________
____________
____________
cars
air pollution
___________
___________
___________
___________
water pollution
____________
____________
____________
____________
loud music
planes
mobile phones
factories
cars
smoking
ships
factories
littering
rubbish
building houses
building houses
1b
Listen and complete the sentences.
really dirty
rubbish
fish
litter
waste
government
close down
clean up
Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a.
1c
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
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 turns beautiful parks into ugly places.
more cars
pollute
are throwing away
public places
2b
Listen again and complete the sentences.
Use the information in 2a and 2b to role-play conversations between Jason and Susan.
2c
Help save the earth
We must think of better way to treat our planet in future.
What do you usually do ?
Are you a friend of the Earth?
Take this quiz.
START

After you drink a can of cola. What do you do?
I throw away cans.
I recycle cans.
You throw away the cans.
That’s bad for the Earth.
You recycle the cans.
That’s good for the Earth.

There are a lot of old newspapers at your home. What do you do?
I throw the old newspapers away.
I recycle the old newspapers.
You throw old newspapers away.
You waste paper.
That’s bad for the Earth.
You recycle old newspapers.
You save paper.
That’s good for the Earth.

You go shopping. What do you do?
I use a lot of new plastic bags.
I use my own bag.
You use a lot of new plastic bags. That’s bad for the Earth.
You use your own bag.
That’s good for the Earth.

When you write on a piece of paper, what do you do?
I write on one side only.
I write on both sides.
You use paper on one side only.
That’s bad for the Earth.
You use paper on both sides.
That’s good for the Earth.
What should we do to save the earth?
stop riding in cars
stop using paper towels or napkins（餐巾，餐巾纸）
[ˈtaʊəl]
recycle books and paper
回收利用
close down the factories;
help to clean up the river;
take the bus or subway;
ride a bike;
bring a bag to go shopping, throw rubbish in the cans;
turn off the lights when you leave a room;
use paper or resusable bags;
recycle books and paper;
turn off the shower when you wash your hair;
don't use napkins;
rethink, reuse, recycle ... ...
solutions
Read the conversation and complete the chart.
take the bus, subway or ride a bike instead of driving.
bring a bag to go shopping.
use chopsticks or forks at home.
throw rubbish in the bins.
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!
2d
Role-play the conversation.
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.
Susan: And remember to throw rubbish in the
cans and keep public places clean and
beautiful for everyone.
Interviewer: So together, our actions can
make a difference and
lead to a better
future!
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。
Language points
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.
cost
spent
takes
4. You should __________  some time practising your pronunciation.
5. My brother _______ 6, 000 yuan for the new computer yesterday.
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。
Role- play the conversation
Jason and Susan, what are your ideas for solving these problems?
Jason and Susan are talking about how to solve pollution. To cut down air pollution, we should _______________________________ _______________. Bike riding ___________
______ and it doesn’t _____________. As for waste pollution, Susan thinks simple things like ___________________________ can help. Jason never ____________________________ _____________ when he buys takeaway food. Susan suggests that we should ____________ in the bins and keep pubic places clean.
ride a bike, take the bus or subway
instead of driving
is good for
health
cost anything
bringing a bag to go shopping
takes wooden chopsticks or
plastic forks
throw rubbish
Points on P97
try to do =try one’s best to do 努力去做某事
be related to… 与……有关
mobile phones 手机
rubbish, litter ,waste 垃圾,废物
the bottom of the river 河底
be full of 充满……
fisherman-fishermen 渔民
government 政府
throw litter into the river 把垃圾扔到河里
ask sb. to do 要求某人干某事
close down the factories 关闭工厂
clean up 打扫
used to be…过去是…
play a part in…参与，在……中扮演角色
Memory
努力去做某事
与……有关
手机
垃圾,废物
河底
充满……
渔民
政府
把垃圾扔到河里
要求某人干某事
关闭工厂
打扫
过去是…
在……中起作用，在……中扮演角色
Points on P98
be badly polluted 受到严重污染
public places 公共场所
turn…into… 把……变成……
cut down 减少
take the bus or subway instead of driving 乘坐公交或地铁代替开车
ride a bike 骑自行车
advantages of bike riding 骑自行车的好处
Points on P58
be good for our health 对我们的健康有好处
cost，spend，take, pay 花费
wood-wooden
takeaway food 外卖食物
throw rubbish in the bins 把垃圾扔进垃圾箱
keep public places clean and beautiful 保持公共场所干净漂亮
make a difference (to) (对……)产生影响或作用
lead to… 导致，通向
被污染
烧煤
太多
扔掉
把......变成......
附近
能够
解决问题
减少空气污染
乘公共汽车或地铁
代替、而不是......
be polluted
burn coal
too much
throw away
turn...into...
around here
be able to
solve a/the problem
cut down air pollution
take the bus or subway
instead of
骑自行车
骑自行车有别的好处。
对......有益
垃圾污染
去购物
开始做某事
记得要把垃圾扔进垃圾桶
保持公共场所的整洁和美丽
对......有影响、有作用
通向美好未来
ride the bike
There are other advantages of bike riding.
be good for
waste pollution
go shopping
start doing
remember to throw rubbish in the bins
keep public places clean and beatiful
make a difference to sb.
lead to a better future
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.
to save
be
fish
wooden
fishermen
用方框中所给词的适当形式填空。
1. Don't throw _______(垃圾) everywhere.
2. In winter, many people burn ______(煤) to keep warm.
3. The police found a body at the ________(底部) of the lake.
4. The ______(花费) of living in big cities is very
high.
5. He keeps a rabbit in a big _______(木制的) box.
cost
wooden
coal
bottom
litter