Unit 13 We're trying to save the earth Section A 3a--3b课件(共21张PPT) 人教版九年级全册

(共21张PPT)
Unit 13
We're trying to save the earth!
Section A 3a--3b
industry
reusable
transportation
cruel
ecosystem
afford
take part in
fin
harmful
scientific
law
shark
chain
Review
Do you know the meaning of the words
food chains
ocean’s
ecosystem
海洋生态系统
食物链
What are they
Sharks are at the top of the food chain in the ocean's ecosystem.
Sharks
But!!!
鲨鱼在海洋生态系统中处于食物链的顶端
Save the sharks !
What’s the main idea of the article
A. Some kinds of fish in the ocean
B.The sharks are endangered in the world.
C.Shark’s fin soup is famous and expensive.
A:in great danger B:dangerous
Whole-reading
(Predicting)
2.Let’s read ，think and predict.
阅读微策略：了解文本并学会区分事实与观点
1. Where can you find the article
A. From a novel.
B. From a magazine.
C. From a diary.
2.What is it talk about
Air pollution
Animal protection
Travel
阅读微策略：通过标题和插图推断



Talk about shark fin soup.
Sharks are endangered now.
Appeal to（呼吁） people against eating shark fins.
skimming and match
Read the passage and complete the fact sheet in 3a.(P99)
Number of sharks caught and traded every year
How much the numbers of some kinds of sharks have fallen in the last 20 to 30years
Two environmental groups which are against “finning”
around 70 million
Para 2
Para 2
over 90 percent
Para 3
WildAid and the WWF
while-reading
班级前说出来。)
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 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.
听说
鱼翅汤
切除
扔回
不仅...而且
对...有害
be harmful to
do harm to
be bad for
在...顶部
食物链
海洋生态系统
1.What are the names of the two environmental protection groups
2. What have people done against(反对）finning？
Para3.
②Ask governments to develop laws to stop the sales of shark fins.
①teach the public about finning.
A.培养 B.壮大 C.完善
3. Do you think the shark fin soup is good for health
No scientific studies have shown that shark fins are good for health.
A.科学的 B.理论的
Careful-reading
So why eat them
Help save the sharks!
很多人都听说过鱼翅汤。这道名贵的菜在中国南方特别受欢迎。但你有没有意识到，每当你享受一碗鱼翅汤的时候，你都在杀死一整条鲨鱼
当人们捕捉鲨鱼时，他们割下鲨鱼的鳍，把鲨鱼扔回大海。这不仅残忍而且对环境有害。没有了鳍，鲨鱼就不能游泳，会慢慢地死去。鲨鱼在海洋生态系统中处于食物链的顶端。
如果它们的数量下降得太低，就会给所有的海洋生物带来危险。许多人认为鲨鱼永远不会濒临灭绝，因为它们是食物链中最强壮的。
Para2.
Careful-reading
When people catch sharks, they ________ their fins and_______the shark __________the ocean.
cut off
throw
Without a fin, a shark
can______________
and___________.
no longer swim
slowly dies
Many believe that sharks
can never___________ ,
because they are ________
in their food chain.
be endangered
the strongest
back into
_____________ sharks
are caught and traded in
this industry every year.
Two
opinions
about
killing
sharks:
Finish the mind-map.
This is not only _____, but also _______to
the environment.
because
but in fact
however
If their numbers drop
too low, it will bring
__________________.
The numbers of some kinds
of sharks _________over 90 percent __________________.
danger to all ocean life
Around 70 million
have fallen
in the last 20 to 30 years
cruel
harmful
班级前说出来。)
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!
in the last/past+时间
fall by 下降了
eg. This year the price of TV falls by 20 percent.
fall to 下降到
eg. This year the price of TV falls to 2000 yuan.
制定法律
scientific[ sa n t f k] adj. 科学上的，科学的
science n. 科学 scientist n. 科学家
但事实上，每年大约有7000万只鲨鱼被捕获并在这个行业中交易。在过去的二三十年里，某些种类的鲨鱼的数量下降了90%以上。
世界各地的环境保护组织，如野生救援组织和世界自然基金会，正在向公众传授“割鳍”的知识。他们甚至要求政府制定法律来禁止鱼翅的销售。到目前为止，还没有科学研究表明鱼翅对健康有益，那为什么要吃呢 帮助拯救鲨鱼!
1. A shark can no longer swim and slowly dies.
鲨鱼不能再游泳然后慢慢死掉。
no longer意思是“不再” , 相当于not ...any longer。
e.g.
布朗先生不再在这里居住了。
=
Summary:
Mr Brown no longer lives here.
Mr . Brown doesn’t live here any longer.
2. This method is not only cruel, but also harmful to the environment.
这种方法不但残忍而且对环境有害。
not only…but also…
用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅……而且……”; 其中的also有时可以省略。
e.g.
她不但演奏的很好，而且唱歌也很好。
不仅是孩子，老人也可以在这里游泳。
She not only plays well, but also sings well.
Not only children but also the old can swim here.
若连接两个成分作主语，其谓语通常与靠近的主语保持一致。
e.g. 不只是你，他也得离开（have to leave）
Not only you but also he has to leave.
The number of workers is 1000.
The number of students in my class is fifity.
A number of students are planting trees on the hill．
学生的数量是2000人。
工人的数量是1000 (The number of )
(我的班里有五十个学生。
The number of )
A number of apples are red。
许多苹果是红色的(A number of)
The number of the apples is 40。
苹果的数量是40 (The number of )
The number of students is 2000。
许多学生在小山上植树A number of.
听说______________
一整只鲨鱼__________________
每次____________________
一碗鱼翅羹__________________
切掉__________________________
扔回__________________
不仅......而且......._____________________
对...有害__________________
没有鱼鳍__________________
不再__________________
hear of
a whole shark
each time
cut off
a bowl of shark fin soup
throw back into
not only... but also...
be harmful to
without a fin
no longer
重点短语勾画
慢慢死去__________________
在海洋生态系统食物链的顶端___________________________________________________
3. 濒临灭绝__________________
4.事实上__________________
5.被捕杀和交易__________________
6......的数量__________________
7.某些品种__________________
8.在过去的20到30年__________________
9.环境保护组织____________________
slowly die
at the top of the food chain in the ocean's ecosystem
be endangered
in fact
be caught and traded
the number(s) of
some kinds of
in the last 20 to 30 years
environmental protection groups
1.......的数量__________________
2.立法________________
3.......的销售________________
4.到目前为止________________
5.帮助拯救鲨鱼________________
6.科学研究_______________
the number of
scientific studies
help save the sharks
so far
the sale of
develop laws