英语九年级全一册 Unit 13 We're trying to save the earth Section A 2a-2d.课件(共有PPT28张，无音频）

(共28张PPT)
Section A
2a-2d
Unit 13
We’re trying to save the earth！
Learning Aims
1.To talk about pollution and environmental protection.
2.To learn the new words:
litter，bottom，fisherman, coal，ugly
3.To review :used to ; should ;be doing ,be done ,have /has done sentence structures
land pollution
2022/1/8
1/8/2022
air pollution
2022/1/8
Coal makes sky ugly.
1/8/2022
water pollution
2022/1/8
1/8/2022
noise pollution
2022/1/8
1/8/2022
2a
Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.
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.
more cars
pollute
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 (丑陋) ones.
are throwing away
public places
Listen and answer the questions.
1. Who is the interviewer talking to
2. What are they talking about
3. What other problems do they see
Susan and Jason.
The environmental problems.
There’s too much rubbish and waste in the streets.
2d
Read 2d and complete the chart.
Problems Solving problems
air pollution
waste pollution
wooden (木头的) chopsticks or plastic forks
rubbish
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.
Role- play the conversation
Jason and Susan, what are your ideas for solving these problems
Yeah, or ride a bike. There are other advantages (优点) of bike riding. It’s good for health and it doesn’t cost (花费) anything!
Well, to cut down air pollution, we should take the bus or subway instead of driving.
Great ideas! What about waste pollution
Me, too. Also, I never take wooden chopsticks or plastic (塑料) forks when I buy takeaway (外卖食品) food. I
use the ones at home.
Mmm, I think simple things like bringing a bag to go shopping can help. I started doing that a year ago.
And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.
So together, our actions can make a difference and lead to a better future!
2d
Problems
Solutions
How to cut down air pollution
take the bus or subway instead of driving.
ride a bike.
Never take wooden chopsticks or plastic fork.
remember to throw rubbish in the bins.
keep public places clean and beautiful.
Our actions can make a difference and lead to a better future!
Read the dialogue in 2d, then complete the mind map in pairs.
How to cut down waste pollution
bring a bag to go shopping.
2d
Language points
1.try 的用法
try to do sth.意为“尽力做某事”。
We are trying to save the earth.
我们正尽力的挽救地球。
和try搭配的词组
①try doing sth.意为“试着做某事”。
②try on意为“试穿”。
②try out意为“尝试,试验”。
③try one’s best to do sth.意为“竭尽全力做某事”。
相当于do one’s best to do sth.
⑤have a try意为“试一试”。
2.cost v.花费 n.花费；价钱
【注意】It’s good for health and it doesn’t cost anything!
它对健康有好处，并且它没有花费任何东西！
It took me an hour to finish my homework yesterday.
我昨天花了一个小时完成我的家庭作业。
I spend ten dollars buying the dictionary.
我花十美元买了这本词典。
He paid five dollars for the meal.
他付了五美元的饭钱。
【注释】cost的过去式和过去分词均为cost,其主语常是物。
【辨析】spend, pay与take
（1）spend意为“花费”，主语常是“人”。常用于spend…on sth./spend…(in)doing sth.结构中。
（2）pay意为“花费”，主语常是“人”。常用搭配为pay for，意为“付费；付出代价”。
（3）take表示“花费”时的常用句型：
It takes sb. some time/money to do sth.
意为“花费某人一些时间/金钱做某事”。
活学活用
—How much is your coat
—Oh, it me 100 yuan.
A.cost B.spend C.paid D.took
A
3.used to
used to意为“过去经常、以前常常”，后跟动词原形，表示过去存在某种状态或者过去的某种经常性、习惯性的行为或者动作，并意味着这种动作目前已经不存在，所以它只能用一般过去时。
肯定形式：主语+used to+动词原形。
否定形式：主语+didn’t+use to+动词原形。
一般疑问句形式：Did+主语+use to+动词原形+其他？
【拓展】①be used to do something意为“被用来做某事”，是动词短语use...to do的被动语态结构。
②be used to doing something意为“习惯于做某事”，to的后面用动名词，它可以用现在，过去和将来等时态，be可以用get，become连系动词代替。
我都 学会了!
本课句型
Summary
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
Exercises
4. You should __________ some time practising your pronunciation.
5. My brother _______ 6, 000 yuan for the new computer yesterday.
spend
paid
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. 多一个人少一个人无所谓。
One person wouldn’t ____ ____ __________.
2. 这个木箱时装满了书。
The _______ box ____ ____ ____ books.
3. 不健康的饮食对这种疾病的传播起一定的作用。
Unhealthy foods ___ ___ ___ ___ the spread of the disease.
4. 这条小路通向公园。
The path ____ ____ the park.
5. 我错拿了你的包。
I took your bag _____ ____ mine by mistake.
wooden is full of
make a difference
lead to
paly a part of
instead of
Homework
1. Review the new words and
expressions.
2. Write about what you can do
to help save the earth in your life.
Thank you !