(共34张PPT及音视频)
Section A (3a-3b)
Unit 13 We’re trying to save the earth!
学习目标
Key words & phrases:
shark,fin,cruel,harmful,be harmful to,at the top of,chain,the food chain,ecosystem,industry,law,scientific.
Key sentences:
1.But do you realize that you are killng a whole shark each time you enjoy a bowl of shark fin soup
2. But in fact ,around 70 million sharks are caught and traded in this industry every year.
To have the awareness of protecting sharks and respecting nature.
South China tiger
华南虎
Crested Ibis
朱 鹮
Let’s look at pictures of endangered animals in our country.
adj. 濒危的；濒临灭绝的
Warming-up
Panda
大熊猫
Brown Eared-pheasant
褐马鸡
Golden Monkey
金丝猴
Chiru
藏羚羊
Do you know anything about them
Free talk
What do you know about sharks
Do you think sharks are endangered Why
What do you think might have caused a fall in the number of sharks
Let's watch a video !
chain [t e n] n.
链子；链条
cruel [kru: l] adj.
残酷的；残忍的
new words & expressions
Let's read
new words & expressions
Let's read
the food chain [t e n]
食物链
at the top of
在……顶部或顶端
at the top of
the food chain
ecosystem
[ i:k s st m]
n. 生态系统
WildAid [ wa lde d ]
野生救援协会（美国）
WWF (World Wide Fund for Nature)
世界自然基金会
new words & expressions
Let's read
industry [ nd stri]
n. 工业；行业
science [ sa ns]
n. 科学
scientific [ sa n t f k]
adj. 科学的；科学上的
scientific studies
科学研究
new words & expressions
Let's read
harmful [ hɑ:(r)mfl]
adj. 有害的
be harmful to
对……有害
e.g. Smoking is harmful to our health.
new words & expressions
Let's read
the shark is caught (catch) by people.
First,
the fins are cut (cut) off by people.
Next,
切除
the shark fins are cooked (cook) into
the shark fin soup by people.
鱼翅羹
Then,
the shark without fins is thrown
(throw) back into the ocean by people.
Finally,
扔回到…...
What will happen to the shark
What should we do
While-reading
Save the Sharks!
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
听说，
相当于hear about
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
切掉；切断
adj.残酷的；残忍的
adj. 有害的
be harmful to对……有害
不再
在……顶部或顶端
n.生态系统
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.
n.工业；行业
在过去的20到30年里，
是现在完成时的标志性时间状语之一
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!
n.法律；法规
adj.科学上的；科学的
到目前为止；迄今为止
是现在完成时的标志性时间状语之一
Read the passage in 3a quickly and answer the questions.
Sharks are at the top of the food chain in the ocean’s ecosystem.
Yes, I think sharks are endangered. Because when people catch sharks, they cut off their fins and throw the sharks back into the ocean. Without a fin, a shark can no longer swim and slowly dies.
Do you think sharks are endangered Why
What do you know about sharks
People catch sharks and cut off their fins and throw them back into the ocean. Without a fin, a shark dies.
What do you think might have caused a fall in the number of sharks
Presentation
3a
Read the passage about sharks and complete the fact sheet below.
Where shark fin soup is popular
Number of sharks caught and traded every year
How governments can help
Two environmental groups against “finning”
In southern China.
Around 70 million.
To develop laws to stop the sale of shark fins.
WildAid and the WWF.
3b
Read the passage again and fill in the blanks with the words in the box.
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.
when
so
but
so although if but when
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.
Although
if
Post-reading
Some people like to eat shark fin soup, especially in _________China. But getting the shark fin is very _____. When people catch the sharks, they ____ ____ their fins and throw the sharks into the ocean. The sharks slowly dies because they can’t _____ without fins. And it is also ________ to the environment. Sharks are at the ___ of the food chain. If the number of sharks drops too low, it will break the balance of the nature. Please say no to eating shark fin soup, and take action to save the sharks!
Retell the passage.
southern
cruel
cut
off
swim
harmful
top
Save the sharks!
Save the wild animals!
Language points
1. The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.(教材P99 3a)
“the numbers of... ”是“the number of…”的复数形式。
The numbers of different kinds of flowers are growing quickly.
【易混辨析】the number of...与a number of...
例词 词义 用法
the number of... ……的数量 “the number of+可数名词复数”作主语时，谓语动词用单数形式。
a number of... 一些；若干 “a number of+可数名词复数”作主语时，谓语动词用复数形式。
A number of measures have been taken to protect wild animals because the number of them has become smaller and smaller.
2. The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years. (教材P99 3a)
Last year, the price of this kind of car was 100, 000 yuan. This year it falls to 80, 000 yuan. It falls by 20 percent.
“fall by” 意为“下降了”，by表示变化的幅度。fall to意为“下降到”。
Exercises
一、单项选择
1.— Why not ask Bob to join us in the trip to the zoo tomorrow
— Everyone in our group loves animals, but he always seems______.
anxious B. personal C. cruel D. careless
2. A number of visitors _______ visiting the West Lake and the number of the visitors _____ increasing.
are; is B. is; are C. are; are
C
A
3. Don’t play games on the computer all day. It’s _______ to your eyes.
A. harmful B. thankful
C. useful D. helpful
A
4.The documentary A Plastic Ocean is so impressive that I ________ it several times so far.
watched B. watch
C. have watched D. will watch
C
二、根据汉语提示完成句子
1. 但是每一次当你喝一碗鱼翅羹的时候，你意识到你杀了一整只鲨鱼吗
But do you ________ that you’re killing a whole shark __________ you enjoy ____________ shark fin soup
2. 这种方式不仅残忍，而且对环境有害。
This is ________________, ___________________ the environment.
3. 如果它们的数量下降得太多，将会给所有的海洋生物带来危险。
If their numbers ________ too ________, it will _________________
all ocean life.
realize
each time
a bowl of
not only cruel
but also harmful to
drop
low
bring danger to
4. 很多人以为鲨鱼永远都不会濒临灭绝，因为他们是食物链的最强者。
Many ________ that sharks can____________________ because they are _____________ in their ____________.
5. 在过去的20年到30年，某些品种的鲨鱼数量下降了超过90%。
______________ some kinds of sharks ______________ over 90 __________ in the last 20 to 30 years.
6. 到目前为止，没有任何科学研究表明，鱼翅对健康有益，那么为什么还要吃它们呢
So far, no _________ studies ___________ that shark fins _____________health, so why ______ them
never be endangered
have fallen by
believe
the strongest
food chain
The numbers of
percent
are good for
have shown
scientific
eat
Homework
1. Read and recite the passage in 3a.
3. Do the exercises in students’ book.
Thank you!
