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Unit13
We’re trying to save earth!
SA 3a-4c 课件(共30张PPT)
at the top of the food chain in the ocean’s ecosystem.
.
Do you think sharks are endangered Why
1. How many sharks are dying every year
2. Why would people catch sharks
3. What do people do when catching them
4. What do you think of this industry
Around 70 million.
For their fins to make shark fin soup.
They cut off their fins and throw the sharks back in to the ocean.
This is not only cruel, but also harmful to the environment.
fins
Watch and Answer
Read to know more about sharks.
Task 1
What's the main idea of the passage
A. The shark fin soup is famous.
B. The sharks are endangered in the world.
C. People cut off shark's fins to make the shark fin soup.
Task 2
Read the passage and complete the main idea of each paragraph.
Solutions
Problem
Facts
__________ of shark fin soup
_________________ of killing sharks
_______ to save sharks
Popularity
Ways and results
Actions
Fast Reading
Read the passage about sharks and complete the fact sheet below.
1. Number of sharks caught and traded every year:
_____________________
2. How governments can help:
__________________________
__________________________
4. Two environmental groups against
“finning”:
____________________
Around 70 million
To develop laws to stop the sale of shark fins
WildAid and WWF
3a
Careful Reading
Many have heard of shark fin soup. But do you realize that you’re killing a whole shark each time you enjoy a bowl of shark fin soup
Read Para1 and answer the questions.
=hear about 听说
一整条鲨鱼
享受一碗鱼翅汤
Task 3
Read carefully and finish the exercises.
Read Para. 1 and write T for true or F for false.
( )You're killing a whole shark when you enjoy a bowl of shark fin soup.
T
Careful Reading
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.
割下鲨鱼的鱼翅
对……有害
不再
处于食物链顶端
在海洋生态系统中
给所有海洋生物带来危险
Read Para2 and answer the questions.
濒临灭绝的
已经下降了90%
在最近的20到30年之间
harmless adj.无害
Careful Reading
Read Para2 and answer the questions.
2. How do people get shark fins
First, people _________ them !
Next , people_____ _____ their fins .
Finally , people them ____ _____ the ocean.
catch
cut off
throw back into
Without a fin,a shark can ________swim and slowly die.
no longer
3. What will happen if sharks don’t have their fins
This is not only cruel, but also harmful to the environment.
cruel
harmful
Without a fin, a shark can ________ swim and slowly _____.
no longer
dies
1. Sharks are ____________ the food chain in the ocean's ecosystem.
2. If their numbers drop too low, it will ______________ all ocean life.
at the top of
bring danger to
Fill in the blanks.
_______ the balance(平衡) of the ocean’s ecosystem.
Break
Read Para. 2 again and write T for true or F for false. Then find out the facts to support your judgment.
( )Sharks can never be endangered.
F
1. Around 70 million sharks __________(catch) and ______(trade) in this industry every year.
2. The numbers of some kinds of sharks _________ (fall) by over 90 percent in the last 20 to 30 years.
in fact
are caught
traded
have fallen
Careful Reading
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!
全球环保组织
Read Para3 and answer the questions.
制定法律阻止鱼翅的买卖
1. What are WildAid and the WWF
So far, no scientific studies have shown that shark fins are good for health.
They are two environmental protection groups.
2. Are shark fins good for health
Read Para. 3 and answer the questions.
New Phrases & Language Points
Check if you know these phrases.
Phrases
1.听说
2.在中国南部地区
3.每次
4.一碗鱼翅汤
5.切掉
6. 不再
7.不仅…而且
8.对…有害
hear of
in southern China
each time
a bowl of shark fin soup
cut off
no longer/more
not only …… but also
be harmful to
Check if you know these phrases.
Phrases
9.在…的顶部
10.食物链
11.实际上，事实上
12. …的数量
13.在过去20到30年里
14.到目前为止
15.海洋生态系统
16. 对……有好处
at the top of
the food chain
in fact
the number of
in the last 20 to 30 years
So far
the ocean’s ecosystem
be good for
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.
when
so
but
Although
if
so although if but when
Read the passage again and fill in the blanks with the words in the box.
3b
There are many animals endangered because of human hunting and sale.
You can help save them.
1. A shark can no longer swim and slowly dies.
鲨鱼不能再游泳了，慢慢地就死了。
no longer
① He no longer lives here.
② He knows that he is no longer young.
不再……
他不再住这儿了。
他知道自己不再年轻。
2. This method is not only cruel, but also harmful to the environment.
这种方法不仅残忍，而且对环境有害。
(1) not only …but also
not only常和but also搭配，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……"。
① Not only the students but also the teacher was invited.
② He not only read the book, but also remembered what he had read.
③ Not only did he turn up late, he also forgot his books.
④ If this project fails, it will affect not only our department, but also the whole organization.
不仅学生们被邀请，那位教师也被邀请了。
他不但读了这本书，而且记得所读的内容。
他不但迟到了，还忘了带书。
如果这个项目失败，不仅会影响到我们部门，还会对整个机构产生影响。
not only …but also连接主语时，其谓语通常与靠近的主语保持一致。
若连接两个句子，not only在句首，其后面的句子要用倒装。
1. Not only you but also he ______(have to) leave.
2. Not only you but also I _____(be) fond of music.
has to
am
be harmful to
① Fruit juices can be harmful to children's teeth.
② Playing computer games too much is harmful to students.
对……有害
果汁可能损坏儿童的牙齿。
电脑游戏玩太多对学生有害。
3. This method is not only cruel, but also harmful to the environment.
at the top of
① She was standing at the top of the stairs.
② We have a lot of things to do, but packing is at the top of the list.
在……顶端
她站在楼梯的顶端。
我们有许多事情要做，但首先是打点行装。
4. Sharks are at the top of the food chain in the ocean's ecosystem.
鲨鱼处于海洋生态系统食物链的顶端。
1. Work in groups and talk about how to save the endangered animals. Then write down the suggestions.
2. Add information about saving the endangered animals to your poster about saving the earth.

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