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Unit 13 We're trying to save the earth. Section A 3a-3b 課件+音視頻【人教2024秋九全英語】

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Unit 13 We're trying to save the earth. Section A 3a-3b 課件+音視頻【人教2024秋九全英語】

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(共33張PPT)
(人教新目標版)九年級全
Period 2 Section A 3a-3b
Unit 13
We’re trying to save the earth!
Learning objectives
Key words & phrases:
cruel,harmful,industry,law,scientific
be harmful to,at the top of,the food chain
Key sentences:
1.Many have heard of shark fin soup.
2.If their numbers drop too low,it will bring danger to all ocean life.
3.The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
4.So far,no scientific studies have shown that shark fins are good for health,so why eat them
Key structure:
Review of tenses:be+doing;used to+do;have/has+done;be+done;should+do
shark
n. 鯊魚
fin
e.g. You're killing a whole shark each time you enjoy a bowl of shark fin soup.
每次享用一碗魚翅湯,你都會殺死一整條鯊魚。
n. (魚)鰭
New words
cruel
adj. 殘酷的;殘忍的
harmful
e.g. Killing sharks is not only cruel, but also harmful to the environment.
殺死鯊魚不僅殘忍,而且對環境有害。
adj. 有害的
be harmful to
對……有害
New words
e.g. Within a food chain, some living things are producers and some are consumers.
在食物鏈中, 有些生物是生產者, 有些是消費者。
at the top of
在……頂部或頂端
chain
n. 鏈子;鏈條
the food chain
食物鏈
ecosystem
n. 生態系統
New words
industry
n. 工業;行業
law
n. 法律;法規
e.g. We need to develop local industries.
我們需要發展地方工業。
New laws should be developed to stop the killing.
應該制定新的法律來制止這種殺戮。
New words
scientific
adj. 科學上的;科學的
e.g. No scientific studies have shown that shark fins are good for health.
沒有科學研究表明魚翅對健康有益。
New words
Who eats who
Put them where you think is suitable.
Lead in
What do you know about sharks
1. The world's biggest living fish is a shark.
2. Sharks can grow, lose and replace their teeth as needed.
3. Sharks are built for speed.
4. Sharks may lay eggs, or bear live young. (可卵生,可胎生)
5. Some sharks are at risk of extinction(滅絕).
As the top predators in the ocean, why are they facing the risk of extinction
掠食者
Let’s save the sharks!
Lead in
While-reading
A. The shark fin soup is famous.
B. The sharks are endangered in the world.
C. People cut off shark's fins to make the shark fin soup.
What's the main idea of the passage
While-reading
Read the passage and complete the main idea of each paragraph.
Solutions
Problem
Facts
__________ of shark fin soup
_________________ of killing sharks
_______ to save sharks
Popularity
Ways and results
Actions
While-reading
Read carefully and finish the exercises.
Read Para. 1 and write T for true or F for false.
( )You're killing a whole shark when you enjoy a bowl of shark fin soup.
T
While-reading
Read Para. 2 and answer the question.
How do people get the fins of sharks
When people _______ sharks, they _______ their fins and _________ the sharks ___________ the ocean.
catch
cut off
throw
back into
catch
cut off
throw... back into
This is not only cruel, but also harmful to the environment.
While-reading
cruel
harmful
Without a fin, a shark can _________ swim and slowly _____.
no longer
dies
1. Sharks are ____________ the food chain in the ocean's ecosystem.
2. If their numbers drop too low, it will ______________ all ocean life.
at the top of
bring danger to
Fill in the blanks.
_______ the balance(平衡) of the ocean’s ecosystem.
Break
While-reading
( )Sharks can never be endangered.
F
1. Around 70 million sharks __________(catch) and ______(trade) in this industry every year.
2. The numbers of some kinds of sharks _________ (fall) by over 90 percent in the last 20 to 30 years.
in fact
are caught
traded
have fallen
Read Para. 2 again and write T for true or F for false. Then find out the facts to support your judgment.
While-reading
Retell Para. 2.
When people catch sharks, they cut off their fins and throw the sharks back into the ocean.
cruel
harmful
Without a fin, a shark can no longer swim and slowly dies.
1. Sharks are at the top of the food chain in the ocean's ecosystem.
2. If their numbers drop too low, it will bring danger to all ocean life.
1. Around 70 million sharks are caught and traded in this industry every year.
2. The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
in fact
Sharks are endangered.
1. What are WildAid and the WWF
So far, no scientific studies have shown that shark fins are good for health.
They are two environmental protection groups.
2. Are shark fins good for health
Read Para. 3 and answer the questions.
While-reading
Read the passage about sharks and complete the fact sheet below.
3a
Number of sharks caught and traded every year
How governments can help
Two environmental groups against "finning"
70 million
develop laws to stop the sale of shark fins
WildAid & the WWF
P99
While-reading
Pay attention to the expressions.
hear of 聽說
每次
砍掉;切斷
not only...but also...
不但……而且……
be harmful to
對……有害
在……的頂端
目前為止,迄今為止
對……有好處
hear of
each time
cut off     
not only...but also...
be harmful to
at the top of
so far
be good for           
1. 聽說
2. 每次
3. 砍掉;切斷
4. 不但……,而且……
5. 對……有害
6. 在……的頂端
7. 迄今為止
8. 對……有好處
Translate the phrases into English.
Post-reading
when
so
but
Although
if
so although if but when
Read the passage again and fill in the blanks with the words in the box.
3b
P99
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.
Post-reading
There are many animals endangered because of human hunting and sale.
You can help save them.
Post-reading
1. A shark can no longer swim and slowly dies.
鯊魚不能再游泳了,慢慢地就死了。
no longer
① He no longer lives here.
② He knows that he is no longer young.
不再……
他不再住這兒了。
他知道自己不再年輕。
Language points
2. This method is not only cruel, but also harmful to the environment.
這種方法不僅殘忍,而且對環境有害。
(1) not only …but also
not only常和but also搭配,用于連接兩個表示并列關系的成分,著重強調后者,其意為"不僅……而且……"。
Language points
① Not only the students but also the teacher was invited.
② He not only read the book, but also remembered what he had read.
③ Not only did he turn up late, he also forgot his books.
④ If this project fails, it will affect not only our department, but also the whole organization.
不僅學生們被邀請,那位教師也被邀請了。
他不但讀了這本書,而且記得所讀的內容。
他不但遲到了,還忘了帶書。
如果這個項目失敗,不僅會影響到我們部門,還會對整個機構產生影響。
not only …but also連接主語時,其謂語通常與靠近的主語保持一致。
若連接兩個句子,not only在句首,其后面的句子要用倒裝。
Language points
1. Not only you but also he ______(have to) leave.
2. Not only you but also I _____(be) fond of music.
has to
am
Language points
be harmful to
① Fruit juices can be harmful to children's teeth.
② Playing computer games too much is harmful to students.
對……有害
果汁可能損壞兒童的牙齒。
電腦游戲玩太多對學生有害。
3. This method is not only cruel, but also harmful to the environment.
Language points
at the top of
① She was standing at the top of the stairs.
② We have a lot of things to do, but packing is at the top of the list.
在……頂端
她站在樓梯的頂端。
我們有許多事情要做,但首先是打點行裝。
鯊魚處于海洋生態系統食物鏈的頂端。
4. Sharks are at the top of the food chain in the ocean's ecosystem.
Language points
1. Can you retell the passage
2. Can you talk about protecting wild animals and respecting the nature
What problems do sharks face
Why do sharks need to be saved
Why should we save the sharks
How to save the sharks
Self-evaluation
1. Work in groups and talk about how to save the endangered animals. Then write down the suggestions.
2. Add information about saving the endangered animals to your poster about saving the earth.
Homework

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