人教版九年级全册Unit 13 We're trying to save the earth! Section A 课件(共17张PPT，无音频)

(共17张PPT)
Unit 13 We are trying to save the earth.
Section A 3a—3c
At the end of this lesson,you are able to
1.master some words and phrases:ecosystem,chain,
cruel,industry,cut off,at the top of ,the food chain,be harmful to
2.know some skills about reading
3.know the facts about sharks,make a decision to protect endangered animals
Learning aims
1. 听说 _____________________
2. 科学研究 _____________________
3. 在中国南部 ____________________
4. 对……有害 ____________________
5. 在……顶部 ____________________
6. 海洋生态系统 ______________________
7.鱼鳍的买卖 ______________________
8.切除 ______________________
hear of
in southern China
scientific studies
be harmful to
at the top of
the ocean’s ecosystem
the sale of shark fins
cut off
Check the preview
Check the preview
1.Do you have some ideas for solving kinds of pollution
To cut down air\water\noise\land pollution...
2.What will happen if the earth is badly polluted ？
Free talk
What did you see in the video
Which animal is the strongest in the ocean
[ i k usist m]
the food chain 食物链
[t ein]
Before reading
ocean ecosystem 生态系统
talk about shark fin soup
Listen to this passage,then match them.
para.1
para.2
para.3
how to save the sharks
sharks are endangered now
Para1.
Talk about shark fin soup.
Read and judge the sentences.
( )The expensive shark fin soup is popular around the world.
( ) You’re killing a whole shark when you enjoy a bowl of shark fin soup.
1800.00 RMB
each bowl
in southern China
F
T
Para. 2 Sharks are endangered now.
Why
What happens to the shark
First, people _________ them !
Next , people_____ _____ their fins .
Then , people the fins ___ the shark fin soup .
Finally , people them ____ _____ the ocean.
Without a fin,a shark can ________swim and slowly die.
catch
cut off
cook into
throw back into
no longer
Para. 2 Sharks are endangered now.
While reading
catch--cut off--cook--throw back into--without fins
Pairwork(互学)
A：What happens to the shark
B : First-Second-Next-Finally···
This is not only cruel, but also harmful to the environment!
[ kru l]
[ hɑ (r)mfl]
Why is it harmful to the environment
in the ocean’s ecosystem，at the top of the food chain
浮游生物
sharks
因为我们生存所需的氧气的70%是海洋中的浮游生物提供的，鲨鱼一旦灭绝，没有了天敌控制的其它海洋生物就会大量吞噬海洋浮游生物，造成地球的缺氧。海洋是地球上最重要的生态系统，起到调节气候和为其它生物提供食物的作用，因此拯救鲨鱼其实就是在拯救人类自己。
Saving the sharks is saving ourselves !
Protecting the sharks is protecting ourselves !
Para3.
How to save the sharks .
1.What are the names of the two environmental protection groups
2. What have people done against(反对）finning
3. Is shark fin soup good for health
(1)teach the public about finning.
(2)ask governments to develop laws to stop the sale of shark fins.
No.
No scientific studies have shown that shark fins are good for health.
A:培养 B:壮大 C：完善
猎鳍、割鳍行为
Some people like to eat shark fin soup, especially in ________China. But getting the shark fin is very ______ . When people catch sharks,they_____ ______ their fins and _____ the sharks back _____ the ocean. The shark slowly dies because it can't ______without the fin. And it is also________ to the environment. Sharks are at the_______ of the food chain. If the number of the sharks drops too low,it will break the balance of nature. Please say no to the fin soup and take actions to save the sharks.
Fill in the blanks.
southern
cruel
cut
off
throw into
swim
harmful
top
After reading
My slogans
Save the animals !
Save ourselves !
Protect the animals !
Protect ourselves !
No trading , no killing !
Say no to shark fin soup !
Say no to eating the animals !
Let’s take actions now !
Come on !
中考链接
1、a number of the number of
相同点： 后都加 名词复数
不同点：a number of +名复， 意为许多；做主语是复数。
the number of +名复，意为......的数量，做主语是单数。
The number of our_________ (teacher)____ (be) 150.A large number of _____(them\it)____(be)very excellent.
teachers is
them are
2、no longer / not....any longer 意为不再
no longer通常位于实义动词之前，be动词、助动词或情态动词之后 。not ... any longer中的any longer总是放在句末。no longer与not ... any longer可以互换
She ______ ________likes dancing.（同义句）
She __________like dancing _____ ______.
她不再喜欢跳舞了。
no longer
doesn't any more
Write an article about the endangered animals,the following sentences may help you.
As there is more and more pollution on the earth, many kinds of animals are endangerd. For examples, sharks,elephants, tigers and so on.
But why are the animals endangered _________________________________________________
So, to save the animals, ___________________________
let's take actions!
Homework
Homework
Thank you for listening!