Unit13 We're trying to save the earth!Section A 3a课件2022-2023学年人教版九年级英语全册(共19张PPT)

(共19张PPT)
shark
鲨鱼
fin
鱼翅
cruel
残忍的
harmful
有害的
food chain
食物链
ecosystem
生态系统
industry
行业
law
法律
hear of
cut off
not only... but also...
no longer
at the top of
the number(s) of
fall by...
develop laws
so far
听说
切除/切掉
不仅......而且.......
不再/再也不
在...的顶端
......的数量
下降了...
立法
到目前为止
Endangered(濒危的) animals
pandas
tigers
sharks
golden monkeys
huge and cruel
scaring and dangerous
live in the ocean
endangered？
delicious
What do you know about sharks
at the top of the food chain
What trouble do sharks get into
What trouble do sharks get into
They are caught by people.
Their fins are cut off.
They are thrown back to sea.
They can’t swim anymore.
They only have to die.
shark fin soup
cruel
Actions to stop killing sharks
Para 1
Para 2
Para 3
Reason for killing sharks
Results of killing sharks
Questions Answers
Where shark fin soup is popular
Number of sharks caught and traded every year
How governments can help
Two environmental groups against(反对) “finning”
Southern China
Around 70 million
Develop laws
WildAid WWF
Shark Fin Soup
famous
expensive
Find three words to describe this dish.
popular
Read paragraph 2 and complete the fact sheet.
Results of
killing sharks
For a shark
For shark groups
For ocean’s
ecosystem
Without a fin, a shark can __________________________________.
1. 70 million sharks are caught and traded
each year.
2. The numbers of some kinds of sharks
___________________in the last 20 to 30
years.
_____ ocean life will be ___________ if there are not enough sharks.
no longer swim and slowly dies
have fallen by 90%
in danger
All
Environmental groups:
Who came to help
They are teaching the public about “finning”.
They have even asked governments to develop laws.
No Trading, No Killing!
When people catch sharks, they cut off their fins and throw the sharks 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.
1. harmful adj. 有害的
be harmful to 对……有害
be good/bad for... 对...有好处/坏处
Smoking is harmful to the health.
吸烟有害健康。
Playing computer games much is harmful to students.
玩太多电脑游戏对学生有害。
2. fall by... 下降了...
fall to... 下降到...
Tony的英语成绩下降了两分。
Tony’s English grades fall by 2.
Tony’s Emglish grades fall to 2.
When people catch sharks, they cut off their fins and throw the sharks 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.
...a shark can no longer swim...
不再/再也不...
no longer
not…any more
我不再是个学生了。
I’m no longer a student.
I’m not a student anymore.
...a shark can not swim anymore...
The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
“the numbers of... ”是“the number of…”的复数形式。
the number of+n复 ……的数量 作主语时，谓语动词用单数
a number of+n复 许多... 作主语时，谓语动词用复数形式
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!
句中fin本为名词，指 “鱼鳍”。
此句中的finning由动词化的fin（割鲨鱼鳍以获取鱼翅）
的-ing形式转化而成，指课文中所陈述的 “猎翅”这一行为。
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.
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
when
3b
so
although
if
but
when
but
Although
if
Fill in the blanks with the words in the box.