unit 13 we’re trying to save the earth! section A 3a-3b 课件 （共22张ppt）

Unit 13 we’re trying to save the earth!
Section A (3a-3b)
ocean’s ecosystem 生态系统
/'i?k??s?st?m/
ocean life
shark
鲨鱼
Many people think that sharks are too strong
to be endangered,
but they are wrong.
at the top of
the food chain 食物链
They are endangered now.
strong
1
Before you read
Save the sharks!
What will the passage talk about?


Para.1 A.
Para.2 B.
Para.3 C. Sharks are endangered now.
鳍
2
While you read
Fast reading
Read the first and last sentences in each paragraph and match the main ideas.
Two groups against “finning”.
Something about shark fin soup.
猎翅
2. What does it mean when people enjoy a bowl of shark fin soup?
Read Para. 1
They’re killing a whole shark each time they enjoy
a bowl of shark fin soup.
shark fin soup
A dish
be famous
be popular in southern China
be expensive
careful reading
1.What do you know about the shark fin soup?
fact
They cut off their fins.
cut off
throw them back into the ocean.
2.Without a fin, what will happen to a shark?
Read Para. 2
1.How do people deal with the sharks when they
catch them?
It can no longer swim and
slowly dies.
Let’s look at some pictures and find out how people treat sharks.
The sharks are endangered!
This is not only cruel but also harmful
to the environment.
3.Why is it harmful to the environment?
the food chain
at the top of
drop too low
will bring…to…
Some
facts
about
sharks
______ _____ ________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 past 20 to 30 years.
行业 B.工业 C .数字
numbers
Around 70 million
2. What are they doing ? & What have they done?
1.What are the two environmental protection groups
against “finning”?
Read Para. 3
?They are teaching the public about “finning”.
?They have even asked governments to develop laws(法律) to stop the sale of shark fins.
shark fin soup
be endangered
against “finning”
…a bowl of…
…a whole…
cut off…
throw…back into…
will die
cruel &
harmful
at the top of…
If…drop too low
will bring…to…
WildAid&WWF
be teaching…about…
…have asked…to
develop laws to…
Save the Sharks!
No scientific studies
have shown that
shark fins are good
for health.
Without a fin
famous
expensive
popular
fact
70 million/90 percent
fact
fact
1.Retell
After you read
3
2.Read the passage again and fill in the blanks with the words in the box.
3b
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
/fur
kill them for their ivory
Should we let them disappear?
1. Why are they endangered?
2. What will happen if their numbers drop too low?
3. What should we do to protect them?
For ourselves, …
For the government,…
pollute…
have no place…
kill them to
eat
make clothes
make money
…
…
If … drop too low, …will bring…to…
stop eating…
buying…
polluting…
develop laws to …
…
…
1. Read the passage again.
2. Make a poster to call on people to protect wild animals.
3. If you have time, watch a movie—
Sharkwater.
Thank you for listening!