(共56张PPT)
Unit 13 We're trying to save the earth.
【 Section A 1a-2d 】
The earth is polluted.
Warming up
The factories that
burn coal pollute
the air with a lot of
black smoke.
n. 煤炭
air pollution
Factories put waste into the river.
water pollution
mobile phone pollution
People should throw away litter in the bin.
n. 垃圾箱
litter v. 乱扔
n. 垃圾(不可数)
rubbish waste垃圾，废弃物
There are more
cars on the road.
noise pollution
1a
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
noise pollution
____________
____________
____________
____________
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
Listen and complete the sentences.
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.
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
Listen again and answer the following questions.
What does Tony want to do later this afternoon
He wants to ______________________ in the river later this afternoon.
go swimming with Mark
2. How was the river in the past
It used to be so _______. It has been the ____________ in this town.
clean
nicest river
1c
Role-play the conversation
The river was dirty. Even the bottom of the river was full of rubbish.
But it used to be so clean!
Yes, but people are throwing litter into the river.
Everyone in this town should play a part in cleaning it up!
Make conversations using the words in 1a.
The river …
Yes, …
Practice
But I was there last weekend and the river was really dirty.
What caused the problem
People are throwing litter into the river.
What should we do
Factories are also putting waste into the river.
We should write to the government and ask them to close down the factories.
What else can we do
Everyone should help to clean up the river.
1. We’re trying to save the earth!
我们正在竭尽全力拯救地球!
try to do =try one’s best to do
尽力去做某事
e.g. We’ll try to finish the work in a week.
我们将努力在一周内完成这项工作。
Language points
try短语
try doing sth. 试着做某事
try on 试穿
try out 尝试；试验；试试
Language points
用try短语的适当形式填空。
1) I went to the tailor’s to _________ my new suit.
2) Let’s _________ your method. It seems very good.
3) I think you should _____________ to improve your English.
4) Let me ____________ the story.
让我试着讲一讲这个故事吧。
try on
try out
try your best
try telling
2. Here are some words related to different kinds of pollution.
be related to 与……有关
e.g. Is the driver relate to the accident
司机和这起事故有关吗？
Language points
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
2a
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
2b
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
1. I ____ __ __ able to see stars in the sky,
but now I can’t see them clearly.
2. The air ___ _______ really _______ around there.
3. People are also _______ in the public places.
4. The factories that burn _____ also
________ the air with a lot of black smoke.
used to be
has become
polluted
littering
coal
pollute
Complete the sentences according to the dialogue.
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
What should we do to save the earth
Turn off the lights when you leave a room.
关掉
stop driving to take a bus
stop using paper towels or napkins n. 餐巾, 餐巾纸
recycle books and paper
v. 回收利用; 再利用
Role-play the conversation.
2d
2d
Read 2d and complete the chart.
Pollution Ways to solve the problem
air pollution
waste pollution
take the bus, subway or ride a bike instead of driving
bring a bag to go shopping
never take wooden(木头的) chopsticks or plastic forks when buying takeaway food
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.
Me, too. Also, I never take wooden chopsticks or plastic (塑料) forks when I buy takeaway (外卖食物) food. I
use the ones at home.
Great ideas! What about waste pollution
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!
1. 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。
sth. costs sb. some money
某物花费某人多少钱
Language points
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？
Language points
take，spend，pay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.
pay, take &spend
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)
reading the newspaper 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.
1. It takes sb. some time to do sth.
(主语为it)
2. sb. spend(s) time/money on sth.
(主语为sb.)
sb. spend(s) time/money (in) doing sth.
3. sb. pay(s) money for sth. (主语为sb.)
4. sth. cost(s) sb. money (主语为sth.)
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
4. You should ________ some time practising your pronunciation.
5. My brother _______ 3,000 yuan for the new computer yesterday.
spend
paid
2. 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
make no difference to 对……没有影响
e.g. Learning English well can make a
difference to your future.
学好英语会对你的前途有影响。
Ⅰ. 根据句意，从方框中选择恰当的单词填空，有的需要变换形式。
1. Look! A boy is lying at the ___________ of the stairs.
2. The old man likes nature. He likes living in his small _______________ house on the mountain.
coal, fisherman, plastic, bottom,
advantage, wood, cost, ugly, litter
bottom
wooden / wood
Exercises
3. Most air pollution is caused by the burning of fuels (燃料) like ________, gas and oil.
4. After your picnic, remember to pick up all your ___________.
5. The new mobile phone ________ Sara 3,600 yuan last week.
coal, fisherman, plastic, bottom,
advantage, wood, cost, ugly, litter
coal
litter
cost
6. Most of the ___________ in the village stayed at home today because of the bad weather.
7. Although the man is ___________, he has a kind heart.
coal, fisherman, plastic, bottom,
advantage, wood, cost, ugly, litter
fishermen
ugly
8. To protect the environment, supermarkets don’t provide free ___________ bags to shoppers.
9. Riding bicycles has so many ___________, so bicycles are popular with people.
coal, fisherman, plastic, bottom,
advantage, wood, cost, ugly, litter
plastic
advantages
Ⅱ. 根据汉语意思完成英语句子。
1. 房间里挤满了人。发生什么事了？
The room was ___________ people. What happened
2. 你应该交个笔友，用英语给她写信。
You should make a pen friend and _______________ her in English.
full of
write to
3. 转学对我的一生有影响。
Transforming from one school to another ____________________ to my life.
4. 为了盖房子马路边的许多大树已经被砍倒了。
Many big trees along the road have been _____________ for building houses.
made a difference
cut down
5. 勇气对说好英语起着很重要的作用。
Courage __________________________ speaking English well.
plays an important part in
Make a poster
The earth is badly polluted. Please make a poster and think of what we can do.
1. Copy the new words and remember them.
2. Read the listening materials of 1b, 2a.
Homework
Thank you!
