资源简介

(共64张PPT)
Unit 13 We’re trying to save the earth!
R·九年级全一册
Section A 1a-2d
New words
乱扔；垃圾；废弃物v.& n.
渔民；钓鱼的人n.
煤；煤块n.
litter
fisherman
coal
丑陋的；难看的adj.
ugly
优点；有利条件n.
advantage
wooden
plastic
cost
塑料的； adj.
塑料；塑胶 n.
花费；价钱n.
木制的；木头的adj.
takeaway
bin
/'te k we /
/b n/
外卖食物 n.
垃圾箱 n.
litter
Let’s read
coal
fisherman
ugly
advantage
cost
wooden
plastic
takeaway
bin
×
Don’t ________!
litter
___________
fisherman
_________ chairs and table
_______ bag
wooden
plastic
_________
ugly
Lead-in
Watch a video and say what you find.
The _______ is polluted.
earth
_______ pollution
_______ pollution
air
water
_______ pollution
noise
Do you know any other
kinds of pollution
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
vehicles
cars
factories
smoking
building houses
burning
power plants
rubbish
littering
ships
factories
sewage
Language points
noise pollution 噪音污染
pollution为不可数名词，意为“污染；污染物”，其动词形式为pollute。
例句：这条河中有大量的污染物。
There’s lots of pollution in the river.
例句：如果你在晚上发出吵闹声的话，我的狗会叫。
If you make noises at night, my dog will bark.
noise为名词，意为“噪音”，形容词形式为noisy
【辨析】noise, sound与voice
noise
sound
voice
意为“噪音，喧闹声”，常指不悦耳、不和谐的嘈杂声。
泛指自然界的各种声音。
一般指人的嗓音，如说话、唱歌、谈笑声等。
Don’t make _______ in the class!
Light travels much faster than ________.
The girl has a sweet _______.
用 noise, sound 与 voice 填空。
noise
sound
voice
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
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
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.
The river was dirty. Even
the bottom of the river
was full of rubbish.
1c
But it used to
be so clean!
Everyone in this town
should play a part in
cleaning it up!
Yes, but people
are throwing litter
into the river.
Role-play
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. But it used to be so clean!
used to为固定结构，意为“曾经；过去常常”，表示过去存在或经常发生但现在已经停止的行为或习惯，后接动词原形。
例句：我们曾在伦敦居住过。
We used to live in London.
否定结构： 主语 + didn’t + use to + 动词原形.
主语 + usedn’t to + 动词原形.
一般疑问句： Did + 主语 + use to + 动词原形 + 其他
Used + 主语 + to + 动词原形 + 其他
例句：她过去不常来。
She didn’t use to come.
She usedn’t to come.
【拓展】
be/get used to (doing) sth.
表示“习惯于（做）某事”。
例句：我习惯早起。
I am used to getting up early.
Make up sentences
Mike
Mike used to play the piano.
肯定句：
否定句：
Mike didn’t use/ usedn’t to play the piano.
Mary
Mary used to dance.
肯定句：
否定句：
Mary didn’t use/ usedn’t to dance.
2. Everyone in this town should play a part in
cleaning it up!
play a part in 意为“参与某事；在……方面起作用”，后接名词、代词或动词-ing形式。
例句：我想参加学校活动。
I want to play a part in school activities.
构成短语：
play an active part in (doing) sth.
积极参与（做）某事
play an important part in (doing) sth.
在（做）某事中发挥重要作用
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.
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
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.
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
There is too much rubbish and waste in our city
Yes, people are littering in public places .
This is turning beautiful places into ugly ones.
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!
代替，而不是
优势，优点
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.
bring的反义词是take
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!
起作用；有影响
导致
Read and finish the task.
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
Language points
1. We should take the bus or subway instead of driving.
instead of 意为“代替，而不是”，后面常跟名词、代词或动词-ing形式。
instead of doing sth. 代替做某事
例句：她没有待在家里而是去上学了。
She went to school instead of staying at home.
【辨析】 instead of 与 instead
instead of instead
介词短语，其后可跟名词、代词或v-ing形式。
Now I can drive to work instead of walking.
副词，常位于句末，位于句首时，其后有逗号。
He didn’t reply. Instead, he left the room.
介词短语
副词
2. Mmm, I think simple things like bringing a bag to go shopping can help.
bring此处作及物动词，意为“带来；取来”，反义词为take，意为“拿走”。
bring sth. / sb. to+地点 把某物/某人带到某地
【辨析】 bring与take
bring
take
带来；拿来
带走；拿走
从别处带到说话者所在地
从说话者所在地带到别处去
Don’t forget to ________ your homework here
tomorrow.
We’ll _______ the students to the museum.
take
bring
3. Our actions can make a difference and lead to
a better future!
make a difference 起作用；有影响
make a difference to ... 对……产生影响
注意：difference前面可加修饰语，如big, great等，表示受影响的程度。
例句：锻炼对她产生了重大影响。
Exercise made a big difference to her.
短语：make no difference 没有影响；无关紧要
make all the difference 关系重大；大不相同
课堂小结
1. fisherman
复数
fishermen
2. advantage
反义词
disadvantage
3. wooden adj.
wood n.
4. harmful adj.
harm n.
5. scientific adj.
scientist/ science n.
6. cause/ solve the problem
引发/解决问题
7. make a difference
影响；有作用
8. instead of
代替；而不是
9. take action
采取行动
10. take part in
参加
11. 这个镇上的每一个人都应该参与清理它!
Everyone in this town should play a part in
cleaning it up !
12. 为了减少空气污染,我们应该乘公共汽车或地铁,
而不要开车。
To cut down air pollution, we should take the
bus or subway instead of driving.
13. 它对健康有益并且不用花费任何东西！
It’s good for health and it doesn’t cost
anything!
Exercise
一、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
1. He _____ go out with his parents, but now he _____
staying at home alone.
A. used to; is used to B. is used to; used to
C. used 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
二、单项选择。
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
Homework
1. Review key words, sentences and language points.
Try to make a summary on this period to find
out what you have learned and do some little
things to protect our earth in daily life.
3. Do the exercises.

展开更多......

收起↑