(共36张PPT)
英语（人教版）
九年级全册
English
Unit 13
We’re trying to save the earth!
Section A（3a-3b）
Look at the pictures and talk about the animals.
Do you like animals
What kind of animals do you like best
Do you know some endangered animals
1
课堂导入
South China tiger
华南虎
Crested Ibis
朱 鹮
Let’s look at pictures of endangered animals in our country.
Golden Monkey
金丝猴
Chiru
藏羚羊
Let’s look at pictures of endangered animals in our country.
Brown Eared-pheasant
褐马鸡
点击，播放视频
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
What do you think might have caused a fall in the number of sharks
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 people catch sharks, they cut off their fins and throw the shark back into the ocean. Without a fin, a shark can no longer swim and slowly dies.
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
Do you think sharks are endangered Why
What do you know about sharks
Where shark fin soup is popular
Number of sharks caught and traded every year
How governments can help
Two environmental groups against “finning”
Read the passage about sharks and complete the fact sheet below.
3a
in southern China
around 70 million
to develop laws to stop the sale of shark fins.
WildAid and the WWF
2
课堂活动
read and answer
Para. 1
1.Where is shark fin soup popular
2.When you enjoy a bowl of shark fin soup, you are killing _______.
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
Para. 2
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.
1. How many sharks are caught and traded every year
2. How does this do harm to the environment
Para. 3
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!
1. Two environmental protection groups against “finning” are ______ and ______.
2. How can governments help to stop the sale of shark fins
Where shark fin soup is popular
Number of sharks caught and traded every year
It is popular in southern China.
The number is about 70 million.
How governments can help
Two environmental groups against “finning”
They can develop laws to stop the sale of shark fins.
WildAid and the WWF.
Check the answers
WWF (世界自然基金会) 英文全称作World Wide Fund For Nature,是享有国际盛誉、全球最大的独立性非政府环境保护组织之一。这一国际组织成立于1961年，致力于保护世界生物多样性、确保可再生自然资源的可持续利用，以及推动降低污染和减少浪费性消费的行动。迄今，该组织在六大洲的153个国家发起或完成了约12,000个环保项目。
WWF
WildAid (美国野生救援协会) 是一个非营利性的动物及栖息地环境保护机构，1999年在美国注册，总部设在美国旧金山，负责监控和协调世界各国各个项目开展的情况。它在纽约、曼谷、伦敦、华盛顿、北京、海参崴等地设有办事处。这一机构的宗旨是世界范围的野生动物保护及救助，其重要工作之一是野生动物保护行动 (ACAP)。
WildAid
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.
Read the passage again and fill in the blanks with the words in the box.
when
so
but
3b
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
so although if but when
hear of
cut off
no longer
not only … but also
be harmful to
bring danger to
the number of
so far
Find the phrases and match.
不再
割掉，砍掉
到目前为止
对……有害
给……带来危险
……的数量
听说
不但……而且……
What does the word “they” refer to according to the passage
1. When people catch sharks, they cut off their fins and throw
the sharks back into the ocean.
2. Many believe that sharks can never be endangered because
they are the strongest in their food chain.
3. They have even asked governments to develop laws to stop
the sale of shark fins.
( )
( )
( )
people
sharks
environment protection groups
Listen and read.
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
Listen and read.
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.
Listen and read.
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!
Post-reading
Fill in the blanks according to the passage.
Some people like to eat shark fin soup, especially in China. But getting the shark fin is very . When people catch sharks, they
their fins and throw the sharks back into the ocean. The sharks slowly die 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!
southern
cruel
cut
off
swim
harmful
top
Language points
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”
e.g. I’m no longer a student. 我不再是个学生了。
有两个短语和no longer同义，即not…any longer和not…any more，但他们侧重的方面不同。
no longer和not…any longer侧重时间。
e.g. He no longer lives here.= He doesn’t live here any longer.
他不在这儿居住了。
(一个时间以前他住在这儿，过了这个时间，他就离开了。)
not…any more侧重程度和数量
e.g. 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 is not only cruel, but also harmful to the environment.
这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. 1) She not only plays well, but also writes music.
她不仅很会演奏，而且还会作曲。
2) Not only men but also women were chosen.
不仅仅是男的，女的也有被选中的。
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. Not only you but also he has to leave. 不只是你，他也得离开。
not only放在句首，后接句子时要用倒装结构。
e.g. Not only had the poor man been fined, but also he had been sent to prison.
这个可怜的人不仅被罚款，而且还被送进了监狱。
be harmful to 对……有害
e.g. Smoking is harmful to the health. 吸烟有损健康。
Playing computer games much is harmful to students.
电脑游戏玩太多对学生有害。
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)
e.g. I looked at the top of his head, his hair shiny and parted smoothly.
我看他的头顶, 头发光亮, 分得平滑。
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。
4. If their numbers drop too low, it will bring danger to all ocean life.
如果它们的数目降至过低，会给所有海洋生物带来危险。
此句复数形式的number表达全海洋中鲨鱼的总量。当表示数值的高或低时，number要用high或low修饰。
e.g. In that country, the number of children going to school is higher in cities than in towns and village.
在那个国家，城市儿童入学人数比乡镇及农村要高。
常与number搭配的动词有grow, fall等。
e.g. The number of families that own cars has been growing quickly recently.
近来拥有轿车的家庭数量增长很快。
3
课堂小结
1.We have learnt some new words and some expressions involving this part.
2. We have read the passage and get the main fact about sharks.
3. we have learnt to talk about protecting animals and environmental protection.
一、完成句子
1. 但是每一次当你喝一碗鱼翅汤的时候，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
课堂训练
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，鱼翅对健康有好处，那么为什
么要吃它们呢
So far, no _________ studies ___________ that shark fins______________
health, so why ______ them
never be endangered
have fallen by
are good for
have shown
scientific
believe
the strongest
food chain
The numbers of
percent
eat
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
3.Don’t play games on the computer all day. It’s _______ to your eyes.
A. harmful B. thankful C. useful D. helpful
二、单项选择
C
A
A
4．I've never heard ____the singer. Do you know much about her
A．with B．of C．on D．in
5．Not only his parents but also he ____ been to the United States.
A．have B．are C．is D．has
6．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
7.I am afraid we can not ____ to take a taxi. Let's go by underground instead.
A．refuse B．afford C．forget D．fall
8．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
B
C
https://www.21cnjy.com/help/help_extract.phpUnit 13 We’re trying to save the earth!
Section A（3a-3b）教案
【教学目标】
1. 正确掌握本课重要词汇和短语：shark, fin cruel, harmful, be harmful to, at the top of等。
2. 能够理解关于捕捉鲨鱼、破坏生态平衡的语篇内容。
3. 能够正确使用连词，完成对语篇内容的补充。
4. 引导学生保护海洋生物、关爱大自然。
【教学重点及难点】
重点：通过完成阅读任务，掌握阅读策略的同时，理解关于捕捉鲨鱼、破坏生态平衡的语篇内容。
难点：在具体的语境中正确使用连词。
【教学过程】
Step 1 Warming-up
1. Look at the pictures and talk about the animals. Make a free talk about the animals in the whole class.
Do you like animals
What kind of animals do you like best
Do you know some endangered animals
2. Let’s look at pictures of endangered animals in our country.
What do you know about sharks
Sharks are at the top of the food chain in the ocean’s ecosystem
Do you think sharks are endangered Why
Yes, I think sharks are endangered. Because people catch sharks, they cut off their fins and throw the shark back into the ocean. Without a fin, a shark can no longer swim and slowly dies.
What do you think might have caused a fall in the number of sharks
People catch sharks and cut off their fins and throw them back into the ocean. Without a fin, a shark dies.
【设计意图】通过自由谈论动物，导入动物保护的话题。
Step 2 Pre-reading
Look at the pictures and have discussions.
【设计意图】通过这一环节，教师在了解学情的同时，可以帮助学生初步了解鲨鱼，也对后面的阅读做准备。
Step 3 Work on 3a
1.Read the passage about sharks and complete the fact sheet below.
2. Read and answer
Para. 1
1）Where is shark fin soup popular
2）When you enjoy a bowl of shark fin soup, you are killing _______.
Para. 2
1） How many sharks are caught and traded every year
2）How does this do harm to the environment
Para. 3
1）Two environmental protection groups against “finning” are ______ and ______.
2）How can governments help to stop the sale of shark fins
3. Check the answers
【设计意图】通过完成判断正误和填写表格，考查学生对文章细节的掌握。
Step 4 Work on 3b
1. Read the passage again and fill in the blanks with the words in the box.
2. Find the phrases and match.
3.Listen and read.
Step 5 Fill in the blanks and retell the passage.
【设计意图】通过对文章框架的梳理，以细节填空的方式，帮助学生整体把握文章结构，再进一步理解文章细节内容的基础上完成对文章内容的复述。
Step 6 Language points
1. This method is not only cruel, but also harmful to the environment.
not only…but also… 意为“不仅……而且……”，其中的also有时可以省略。
2. Sharks are at the top of the food chain in the ocean’s ecosystem.
at the top of意为“在……最高地位；用最高 / 最大的 (速度, 声音等) ”
3. If their numbers drop too low, it will bring danger to all ocean life.
此句复数形式的numbers表达全海洋中鲨鱼的总量。当表示数值的高或低时，number要用high或low修饰。
4.be harmful to 对……有害
Smoking is harmful to the health. 吸烟有损健康。
Playing computer games much is harmful to students.电脑游戏玩太多对学生有害。
5. 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”
e.g. I’m no longer a student. 我不再是个学生了。
有两个短语和no longer同义，即not…any longer和not…any more，但他们侧重的方面不同。
no longer和not…any longer侧重时间。
e.g. He no longer lives here.= He doesn’t live here any longer. 他不在这儿居住了。
(一个时间以前他住在这儿，过了这个时间，他就离开了。)
not…any more侧重程度和数量
e.g. 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。)
【设计意图】系统学习本课语言知识。
【课堂小结】
1.We have learnt some new words and some expressions involving this part.
2. We have read the passage and get the main fact about sharks.
3. we have learnt to talk about protecting animals and environmental protection.
【课堂训练】
PPT
