人教版九年级英语下册Unit13 We’re trying to save the earth!第二课时 SectionA (3a-3b)课件(共20张PPT)

(共20张PPT)
第二课时 Section A（3a~3b）
South China tiger
华南虎
Crested Ibis
朱 鹮
Let’s look at pictures of endangered animals in our country.
濒危的；濒临灭绝的
Warm- up
Golden Monkey
金丝猴
Chiru
藏羚羊
Let’s look at pictures of endangered animals in our country.
Pre-reading
Do you think sharks are endangered Why
What do you think might have caused a fall in the number of sharks



Talk about shark fin soup.
Sharks are endangered now.
Appeal to（呼吁） people against eating shark fins.
Skimming
Para.1 read and judge the sentences.
Scanning
①Shark fin soup is famous and expensive all around the world.
②You’re killing a whole shark when you enjoy a bowl of shark fin soup.
F
T
Read para.2 and match the idea with the cards.
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. 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.
Process(过程) of killing shark
Effect(影响) on the food chain
Numbers about sharks
cruel
harmful
II.Read Paragraph 2 and fill in the chart.
people enjoy _____________________
fishermen ___________, _______________, then _______________________
________________________________fell quickly
a bowl of shark fin soup
catch sharks
cut off their fins
throw them into the ocean
The numbers of some kinds of sharks
Para. 3 read and fill the chart
Environmental
protection groups 1.They are ___________________
about finning.
2. They have asked the governments to _____________ to stop the sale of shark fins.
WildAid
the WWF
teaching the public
develop laws
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 much the numbers of some kinds of sharks have fallen in the last 20 to 30 years
Two environmental groups against “finning”
southern China
70 million
over 90 percent
WildAid & the WWF
3a
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
Read the passage again and fill in the blanks with the words in the box. (P99)
3b
Save the Sharks!
提出问题：吃鱼翅就是杀害一整头鲨鱼(Para.1)
shark fin soup is popular in southern China
a bowl of shark fin soup=killing a whole shark
解决问题：国际环保组织号召反对
“猎翅”(Para.3)
cut off their fins and throw the sharks back into the ocean
cruel and harmful to the environment
around 70 million sharks are caught and traded every year
bring danger to all ocean life
the numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years
分析问题：为什么要阻止“猎翅” (Para.2)
environmental protection groups
no scientific studies have shown that shark fins are good for health
teaching the public about “finning”
asked governments to develop laws to stop the sale of shark fins
Post-reading
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 &no more “不再”
no longer和not…any longer 侧重时间
no more和not…any more 侧重程度和数量
Language points
I’m no longer a student.
我不再是个学生了。
You can drink no more. = You can’t drink any more.
你不能再喝了。(喝酒的量到了一定程度，不能再继续下去了。)
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…
表示并列，着重强调后者，“不仅……而且……” （also 可省略）
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
not only放在句首连接两个分句时，后接的第一个句子要用倒装结构
She not only plays well, but also writes music.
她不仅很会演奏，而且还会作曲。
Not only you but also he has to leave.
不只是你，他也得离开。
Smoking is harmful to the health.
吸烟有损健康。
Playing computer games too much is harmful to students.
电脑游戏玩太多对学生有害。
be harmful to 对……有害
= do harm to
= be bad for
3. Sharks are at the top of the food chain in the ocean’s ecosystem. 鲨鱼位于海洋生物系统食物链的顶部。
at the top of 在...最高地位; 用最高[最大]的(速度, 声音等)
We can see the sunrise at the top of the hill.
我们可以去山顶看日出。
He shouted at the top of his voice in order that he might be heard.
他尽力大声叫喊, 以便别人能听见。
I. 根据句意选择恰当的词并用其适当形式填空
1．Eating too much junk food is really _________to your health.
2．I can't stand people who are _____to little animals.
3．My father has been working in the oil __________for five years.
4．He is a great scientist who has made a lot of __________discoveries.
5．With the development of society， some ______are canceled and some new
ones are made.
harmful
cruel
industry
scientific
laws
Exercises
law，science， harm， cruel， industry
II. 单项选择
1．I've never heard ____the singer. Do you know much about her
A．with B．of C．on D．in
2．Not only his parents but also he ____ been to the United States.
A．have B．are C．is D．has
3．Please ____ the TV. It's time to go to bed.
A．turn on B．turn off
C．put on D．put off
B
D
B
4．In our school library there ____ a number of books and the number for them ________ growing larger and larger.
A．is; are B．has; is C．are; is D．have; are
5．Playing computer games too often ____ our eyes.
A．is helpful to B．is harmful to
C．is good for D．is harmful with
C
B
Homework
观看纪录片Sharkwater, 请你以鲨鱼的角度给人类写一封80词左右的信，呼吁人类停止捕杀鲨鱼。内容包括：
(1)介绍鲨鱼以及鲨鱼的生存现状；
(2)讲述人类不应该捕杀鲨鱼的理由（至少包括两个）；
(3)呼吁人类与鲨鱼和平共处。