人教版新目标九年级下册unit13 We're trying to save the earth! sectionA-3a-3c课件(共31张PPT)

(共31张PPT)
Unit13 We're trying to save the earth! Section A 3a-3b
Learning Objectives
Read the passage about sharks and finish the tasks
Learn the key words and phrases
Talk about how to protect the sharks
Can you share something about how to protect our environment
Problem: air pollution, waste pollution...
Solutions: recycle books and paper, stop driving cars...
We should take the bus or subway instead of driving.
Yes, or ride a bike. It’s also good for our health.
For the waste pollution, I never use wooden chopsticks in restaurant.
And throw rubbish in the bins.
Pre-reading
What do you know about these animals
Do you think they are endangered Why
Have ever heard of the sharks
adj.濒危的
鲨鱼
Look at the picture and the topic ,
What’s the main idea of this passage
Can you guess
A.The shark fin soup is famous and
expensive.
B.The numbers of the sharks have
fallen very fast.
C.The sharks are endangered in the
world.
√
While-reading
Paragraph 1 help save the sharks
Paragraph 2 the sharks are endangered
Paragraph3 the shark fin soup
Read the passage quickly. Then match each paragraph with the main idea.
Where shark fin soup is popular
Number of sharks caught and traded every year
How government can help
Two environmental groups against “finning”
southern China
70 million
develop laws to stop the sale of shark fins
WildAid and the WWF
(鱼)鳍
Read the passage about sharks and complete the fact sheet below.
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.
when
Read the passage again and fill in the blanks with the words in the box.
3b
so although if but when
so
在…的顶端
食物链
生态系统
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.
but
Although
if
adj.科学的
Some people like to eat shark's fin soup, especially in_______
China. But getting the shark's fin is very_____. When people
catch sharks, they____ _____their fins and throw the sharks back into the ocean. The shark slowly dies because it can’t_______
without the fin.And it is also________to environment. Shark are at the_____of the food chain. If the________of sharks drops too low, it will break the balance of nature. Please say no to eating the shark fin soup, and take action to save the sharks!
southern
cruel
cut off
swim
harmful
top
numbers
采取行动
Fill in the blanks.
Post-reading
No shark fin, fish every year!
Save the animals!
Save ourselves!
Save the earth!
What attitude should we take towards sharks
What can we do to save ourselves
Because of Novel coronavirus, we Chinese have had a special Spring Festival. Nobody wants to get the disease, but how should we prevent NCP and protect ourselves
There is no doubt that hunting wild animals has a bad influence. For one thing, it causes the imbalance of our ecosystem. For another, it leads to the spread of infectious diseases from animals to us human beings, such as SARS and Novel coronavirus. We should never have wild animals for food.
[观察1] When people catch sharks,they cut off their fins and throw the sharks back into the ocean.
[探究] cut off 切掉；切断
The electricity has been cut off again.
又停电了。
[观察2] This is not only cruel, but also harmful to the environment.
[探究] 1. cruel adj.残酷的；残忍的
we shouldn’t be cruel to the animals.
我们不应该虐待动物。
2. be harmful to ...对...有害，其同义短语be bad for...
The air pollution is harmful to our health.
空气污染不利于身体健康。
[观察3] Without a fin,a shark can no longer swim and slowly dies.
[探究] no longer 不再；强调时间和动作不再持续相当于not...any longer
She no longer lives here.
=She doesn’t live here any longer.
她不再住在这儿了。
[观察4] But in fact, around 70 million sharks are caught and traded in this industry every year.
[探究] 1.in fact事实上；实际上
In fact, the word salary comes from the word salt.
事实上，薪水这个词来自于盐这个词。
2.Industry n.工业；行业。既可以做可数名词也可以做不可数名词，heavy/light industry重、轻工业
We need to develop local industries.
我们需要发展地方工业。
[观察5] The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
[探究] the numbers of ...的数量；是the number of 的复数形式。此处，numbers 表示不同种类鲨鱼的数量。
The numbers of different kinds of trees are growing quickly.
不同种类的树的数量正在快速增长。
the number of
...的数量
a number of
一些；若干
+可数名词复数做
主语时，谓语动词
用单数
[辨析] the number of 与a number of
+可数名词复数做
主语时，谓语动词
用复数
[观察6] They have even asked governments to develop laws to stop the sale of shark fins.
[探究] law n.法律；法规。 lawyer n.律师
obey the law遵守法律 break the law违法
He is a lawyer and he always tell us that everyone should
obey the law.
他是一名律师并且总是告诉我们要遵守法律。
[观察7] So far, no scientific studies have shown that shark fins are good for health, so why eat them
[探究] so far 到目前为止；迄今为止。 常用于现在完成时
I wasn't too happy with what I'd written so far.
我对于目前已写完的这些并不太满意。
1.They ______their fins when people catch sharks.(切掉）
2.Mr.Li is _________ a music lover.(不再）
3.He was standing ____________the stairs.(在...顶端）
4._______, he doesn’t like English.(实际上）
5.Now,this kind of car ________20 percent.(下降了）
Exercise
根据汉语意思完成下面的句子
cut off
no longer
at the top of
In fact
falls by
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 ____.
A.anxious B.personal C.cruel D.careless
2.Greenhouse gases are_____to the environment.
A.good B.better C.harm D.harmful
C
D
3.A number of visitors ____visiting the West Lake and the number of the visitors___ increasing.
A. are; is B. is; are C. are; are D. is; is
4.The writer is so popular that he ____more than 200,000 books so far.
A. sell B. sold C. has sold D. have sold
A
C
1.Pollution is _______ (harm) to all the life on earth.
2.The environment is getting worse. We should stop___________(cut down) trees at will(随意）.
3.The number of the students in our school ____(be) two hundred.
4.So far, no _________(科学的）studies have shown that shark fins are good for health.
scientific
harmful
is
cutting down
用括号里单词的适当形式填空
Summary
Para.1
shark fin soup is popular in southern China.
Para.2
cruel:
harmful:
endangered:
cut off their fins and throw the sharks
back into the ocean.
bring danger to all ocean life
The numbers of some kinds of
sharks have fallen by over 9percent
in the last 20 to 30years.
Para.3
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)