鲁教版五四制九年级全册 Unit 8 We're trying to save the earth! Section A 课件 (共32张PPT，无音频)

(共32张PPT)
Unit 8 We’re trying to save the earth!
Section A
noise pollution
Lead in
air pollution
water pollution
land pollution
1a Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
loud music
rubbish
cars
planes
littering
ships
factories
smoking
building houses
mobile phones
1b 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.
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.
dirty
rubbish
fish
litter
waste
governments
close down
clean up
1c. Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a.
Mark: The river was dirty. Even the bottom of the river was full of rubbish.
Tony: But it used to be so clean!
Mark: Yes, but people are throwing litter into the river.
Tony: Everyone in this town should play a part in cleaning it
up!
play a part in doing sth. 在……中起作用
2a. Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.
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.
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.
A. land pollution B. air pollution
C. noise pollution D. water pollution
more cars
pollute
are throwing away
public places
2c. Use the information in 2a and 2b to role-play conversations between Jason and Susan.
Jason: The air has become really polluted around here. I’m getting very worried.
Susan: Yes, I used to be able to see stars in the sky.
Jason: The problem is that ...
be able to 能；会
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!
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!
Languages points
1. Well, to cut down air pollution, we should take the bus or subway instead of driving.为了减少空气污染，我们应该乘公共汽车或地铁，而不是开车。
（1）cut down意为“减少，缩减；砍倒（树木）”。
cut的其他常用搭配：
cut in插嘴 cut out剪下 cut up切碎
(2)instead of意为“代替；而不是”，of是介词。
◆即学即练
①He _____ the tree and cut it up for firewood.
A. cut down B. cut up C. cut out D. cut in
②—Let’s go hiking ______ staying at home, shall we
—Good idea.
A. instead of B. in order to
C. as well as D. in addition to
答案：①A ②A
2.cost动词，意为“花费”，作名词时意为“花费；价钱”。
◆易混辨析
人+spend+时间/金钱+(in) doing或者人+spend+时间/金钱+on+sth.
人+pay+金钱+for+某物
某物+cost+人+金钱
It takes +人+时间+ to do sth.
◆即学即练
用spend，cost，pay翻译下列句子
我花了10元买这支钢笔。
________________________________________
答案：
I spent ten yuan buying/on the pen.
The pen cost me ten yuan.
I paid ten yuan for the pen.
3. So together, our actions can make a difference and lead to a better future!所以只要一起，我们的行动就会产生效果，创造一个更好的未来！
(1)make a difference意为“起作用；有影响”，difference前可以加great等形容词，也可加no，表示否定意义；在否定句中a改为any。例如：Whatever she did, it made no difference.不管她做了什么都没有影响。
(2)lead to意为“导致；通向”。例如：This path leads to the next village. 这条小路通往邻近的村子。
◆即学即练
①它不会对这个世界造成影响。
It wouldn’t ______ _______ _______ to the world.
②辛勤工作能带来成功，失败在于懒惰。
Hard work _______ ________ success and failure often lies in laziness.
答案：①make any difference ②leads to
Save the Sharks!
Many have heard of shark fin soup. This famous and expensive dish is especially popular in southern China. But do you realize that you’re killing a whole shark each time you enjoy a bowl of shark’s fin soup
When people catch sharks, they cut off their fins and throw the shark back into the ocean. This is not only cruel，but also harmful to the environment. Without a fin, a shark can no longer swim and slowly dies. Sharks are at the top of the food chain in the ocean’s ecosystem. If their numbers drop too low, it will bring danger to all ocean life.
Many believe that sharks can never be endangered because they are the strongest in their food chain. But in fact, around 70 million sharks are caught and traded in this industry every year. The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
Environmental protection groups around the world, such as WildAid and the WWF, are teaching the public about “finning”. They have even asked governments to develop laws to stop the sale of shark fins. So far, no scientific studies have shown that shark fins are good for health, so why eat them Help save the sharks!
3a.Read the passage about sharks and complete the fact sheet below.
Around 70 million.
Over 90 percent.
Wild Aid and the WWF.
In southern China.
3b. Read the passage again and fill in the blanks with the words in the box.
1. Many people do not realize they are killing a whole shark _____ they enjoy a bowl of shark fin soup.
2. Sharks are at the top of the food chain, _____ if their numbers drop, the ocean’s ecosystem will be in danger.
3. Many think that sharks are too strong to be endangered, _____ they are wrong.
4. _________there are no scientific studies to support this, a lot of people believe that shark fins are good for health.
5. Sharks may disappear one day_____ we do not do something to stop the sale of shark fins.
so, although, if, but, when
when
so
but
Although
if
Grammar Focus
We’re trying to save the earth. Present progressive
The river used to be so clean. used to
The air is badly polluted. Passive voice
No scientific studies have shown that shark fins are good for health. Present perfect
We should help save the sharks. Modal verbs
4a Fill in the blanks with the correct forms of the verbs in brackets.
Joe: ________you ever________ (take) part in an environmental project
Ken: Yes, I have. I_________ (help) with a Clean-Up Day last year. It was___________ (consider) the biggest clean-up project this city______ ever______ (have).
Joe: How many people________ (take) part
Ken: I _______(think) more than 1,000 people _________(come) to help out.
Joe: That’s fantastic! I guess everyone in this city is________ (try) to improve the environment.
Ken: Yes, we can't afford to _______(wait) any longer to take action!
Have
taken
think
helped
considered
has
had
took
came
trying
wait
4b. Fill in the blanks with the appropriate modal verbs from the box.
People__________ think that big things ____________be done to save the earth. Many forget that saving the earth begins with small things. For example, you ______ save electricity by turning off the lights when you leave a room. You _________also use reusable bags instead of plastic bags. I think it's a great idea that you now _______ pay for plastic bags in some stores. And instead of driving to school or work, you________ ride your bike or walk. If it’s far, you_________ take the bus. All these small things _________add up and become big things that________ improve the environment. Let's take action now!
can, would, could, have to, should, must, may/might
may/might
must/should
can
can/could
have to
could
can
should
would
Practice
用所给词的适当形式填空
1.Plastic bags are _____(harm) to the ocean.
2.Mum _____(pay) for my driving lessons last Monday.
3.My sister can’t afford ____(buy) the car now.
4.She was chosen to take part in the _____(science) research.
5.You can also use ____(reuse) bags instead of plastic bags.
答案：1. harmful 2.paid 3.to buy 4.scientific
5.reusable
Guessing Game:
Can you guess what animals they are
1. They look like a cow, but they live in the water.
2 . They are furry enough to keep out the cold. They are all white and only live in the North Pole.
3. They are enormous and have long trunks. They live in Africa and Southeast Asia.
4. They only live in Australia and have pockets to keep their babies safe.
5. They look like monkeys but are bigger than monkeys. They can imitate what people do.
6.They are spotted and aggressive. They run fast.
7.They live only in China and eat bamboo.
8. They are shy, have red eyes, like eating carrots and can run fast.
10 .They can learn to speak. They’re playful.
9. They are soft and have long bodies. They can “walk”quickly on the water without feet.
Do you think they are happy
Do you think zoos are good for animals
Homework
Write a passage to give your own opinions on environmental protection.
Facts speak louder than eloquence.
事实胜于雄辩。