Unit 13 We’re trying to save the earth! Section A（1a-2d)）课件(共46张ppt)

Unit 13
We are trying to save the earth.
Language Goal
Talk about pollution
and envirnmental protection
To talk about air pollution, water pollution and sound pollution.
To think about ways of protecting the environment.
To learn the new words: advantage, scientific
air pollution
water pollution
noise pollution
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
loud music cars rubbish planes
littering ships factories smoking
building houses mobile phones
Factories pour dangerous gases into the air.
Cars also pour dangerous gases into the air.
tail gas
air pollution!
The weather is always foggy.
We can’t see the blue sky.
We can’t breathe the fresh air.
Do you know why?
Factories produce too much dangerous smoke.
The traffic produces too many fumes.
Some people smoke in public places.
Dad, what’s the acid rain?
Natural resources are disappearing at a dangerous rate.
以危险的速度
desert
灭绝
extinct
Help save the earth
We must think of better way to treat our planet in future.
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;
1b
Listen and complete the sentences.
really dirty
rubbish
fish
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.
litter
waste
government
close down
clean up
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.
Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a.
1c
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.


健康的饮食在帮助人们长寿方面起着
非常大的作用。
A good diet plays a large part in
helping people live longer.
play a part 在……中扮演角色
e.g.



他被邀请参加这个电视剧的演出。
He was invited to play a part in this TV play.

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







try to do
be related to
mobile phones
litter ; rubbish;waste
the bottom of the river
be full of
fisherman
government
throw rubbish into the river
ask sb. to do sth.
close down the factories
clean up
used to be
play a part in
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.
cut down, 意为"减少"； 是“动词+副词”结构的短语，后面所带的宾语为名词时，宾语可以位于down的前面或后面；为代词时只能位于down前面。
You'd better cut the article down to about 2000 words.
cut 后接off, into,up, in 的不同：
cut off 切断；切除
cut into 把...切成...
cut up 切碎
cut in 插队
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
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!
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.
Problems Solving problems
air pollution

waste pollution
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






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.
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。
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
cost wooden, coal , bottom, litter
1. He ___ go out with his parents, but now
he _____ stay at home alone.
A. use to; is used to B. is used to; used to
C.use to; used to D. is used to; is used to
2. The interesting book ___ me 10 yuan.
A. took B. paid
C. spend D. cost
Choose the best answer.
3. We must do something useful to ___ pollution.
A. cut off B. cut up
C. cut down D. cut in
4. Smoking can ___ lung cancer. you'd bettter give it up.
A．work on B．lead to C．take away D．put out
5. What are the ___ of bike riding?
-- It can help cut down air pollution.
A．advantage B．reasons
C．results D．ideas