英语九年级全一册Unit 13 We're trying to save the earth。SectionA2a-2d.课件（共有PPT30张，无音频）

(共30张PPT)
Section A
2a-2d
Unit 13
We’re trying to save the earth！
Learning Aims
Important words:
(dis)advantage n; cost v&n ; wood(en) n(adj); plastic n
To listen for specific information
To talk about pollution and environmental protection
The earth is in danger we should try our best to save it !
The earth is badly polluted.
What should we do to save the earth
Warming up
Causes: a huge number of cars, factories,
coal-burning …
Look and say
What kind of pollution has been showed in this picture What do you think has caused this pollution
air pollution
Causes: loud music, airplanes, cars ,
mobile phones …
noise pollution
water pollution
Causes: factories, rubbish …
Look and say
Causes: littering, all kinds of
human activities …
land pollution
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
2a
Let's listen.
2022/1/11
1/11/2022
The air is badly polluted because there are __________ on the road these days.
Factories that burn coal also _______ the air with a lot of black smoke.
There is also too much rubbish and waste. People ________________ things every day.
People are also littering in ____________ like parks. This is turning beautiful places into ugly ones.
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
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…
Role-play
1. Role play the conversation in groups;
2. Role play the conversation in front of the class
Let’s see which group does the best.
2d
3.Read it again and answer my question.
what Johnson does
what Susan does
1.take the bus or subway instead of driving
2.take wooden chopsticks or plastic forks when he buys takeaway food
1.ride a bike instead of driving
2.bring a bag when shopping
3.throw rubbish in the bins
2022/1/11
1/11/2022
4.Let's role-play.
Jason and Susan,what are your iedas for solving these problems
There are other advantages of…
Well, to cut down air pollution, we…
13
1/11/2022
Interviewer
Susan
Jason
Read 2d and answer the questions.
1. Who is the interviewer talking to
2. What are they talking about
3. What other problems do they see
Jason and Susan.
The environmental problems.
There’s too much rubbish and waste in the streets.
We should stop taking the cars
We should stop using paper towels or napkins（餐巾，餐巾纸）
We should recycle books and paper
回收利用
辨析： turn, get与become
(1) become 多指身份，职位等的变化，
它强调变化过程已经完成，后面可以接名词
或者形容词。
He becomes a teacher.
(2) get多用于口语，表示一种变化过程，
强调的是“渐渐变化”后常接形容词的比较级形式。
Language points
In winter the days get shorter.
冬天白天渐渐变短。
(3) turn 指的是在颜色和性质等方面与以前的完全不同，强调变化的结果。
leaves turned brown in the mountains.
山里的树叶已经变成了棕色。
：
Her mother ______ angry when she heard the news.
It's _____ darker and darker outside.
The milk has ______bad.
练习
became
getting
turned
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：
拓展
cut off 切断；切除
cut into 把...切成...
cut up 切碎
cut in 插队
花费 主语 表示内容
spend 人 宾语可以是钱，精力，时间等。
cost 物或事 后接life，money，health，time等，侧重与花费的代价
take 事或人 说明事情完成花费了...
辨析：spend, cost, take, pay
pay 人 "支付" 作为及物动词，可以是 pay sb 或pay some money；作为不及物动词，形式为pay for。for表支付的原因。
1. Do you take exercise everyday
Yes, I always ___ thirty minutes after supper.
A spend B cost C take D pay
2. I ____ 300 yuan for the bike.
A took B spend C cost D paid
我都 学会了!
本课句型
Summary
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
一、单项选择
Exercises
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
1.这个镇每个人都应该为清洁它发挥作用。
Everyone in this town should cleaning it up!
2.因此，我们能齐心协力就能带来变化，创造美好的未来。
So together, our actions can and _____ __ a better future!
play a part in
make a difference lead to
3.为了减少空气污染，我们应当乘坐公汽或地铁而不是开车。
air pollution, we should take the bus or subway _____ ____driving.
4.我过去能在天空中看到星星。
I able to see stars in the sky.
5.这儿的空气真的已经被污染了，我非常担心。
The air has really around here. I’m _______ very .
To cut down
instead of
used to be
become polluted terribly
worried
Homework
1.Try to use the wasteful bottles to make something useful.
2.Retell the conversation from 2d.
Thank you !