(共27张PPT)
Unit 13
We are trying to save the earth!
Section A (3a-3b)
情景式教学阅读课公开课
人教新目标版 九年级(下册)
Learning objectives
1.学习本课新词汇：shark, fin, cruel, harmful, chain, ecosystem. industry, law, scientific, be harmful to, at the top of, the food chain
掌握句型: But do you realize that you are killng a whole shark each time you enjoy a bowl of shark fin soup
If their numbers drop too low，it will 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.
2. 通过fast reading阅读策略，能够正确选择文章大意和匹配段落大意，能正确说出段落中各句子之间的逻辑关系，；运用careful reaidng阅读策略，能够正确回答问题，填出“每年被捕捉和贸易的鲨鱼数量”等具体信息,说出鲨鱼濒临灭绝的原因。
4.增强关爱动物，保护动物意识，呼吁人们保护鲨鱼。No trading, No Killing!
Have you ever seen a shark
What do you think of the shark
big
strong
huge
ugly
scary
People are cutting off shark’s fins.
cruel
shark [ e k] n. 鲨鱼
Do you think sharks can be endangered Why
fin [f n] n.(鱼)鳍
cruel [ kru l] adj. 残酷的；残忍的
Let’s watch a video and answer the questions.
1.Are sharks endangered animals
2.What do you know about sharks
3.What do you think might have caused a fall in the number of sharks
Sharks is the fiercest animal in the ocean.
(凶猛的)
Yes, they are.
I think the reason is that people catch sharks and cut off their fins, then throw them back to the ocean.Without a fin, a shark can no longer swim and slowly dies.
What do you know more about the shakes
1.What trouble do sharks get into
They are caught by people.
Their fins are cut off.
They are thrown back to sea.
They can’t swim anymore.
They only have to die.
2.What is the most expensive part of a shark
shake fin
shake fin soup
3.What do you think of finning
切鱼鳍
It’s cruel.
Let's save the sharks!
Let’s look, think and predict.
Reading Tip：The title and the picture can help predict what the passage talks about.
1.What does the passage talk about
It may talk about the sharks are in
endanger and they need us to save them.
3. Do you think sharks are endangered Why
Yes. Because I know people may kill them for their fins and oil. Also, the title tells us to save them.
Read the passage quickly to match
the general idea of each Para.
Para.1：
Para. 2：
Para.3：
Reading Tip： The first and last sentences of each paragraph may help you.
How to save the sharks.
Sharks are endangered now.
Talk about shark fin soups.
Fast reading
Read paragragh 1 carefully and
answer the questions.
Careful reading
2.What do you know about the shark fin soup
1.Where is shark fin soup popular
In southern China.
Famous, expensive and popular.
3. What does it mean to enjoy a bowl of shark's fin soup
They’re killing a whole shark each time they enjoy a bowl of shark fin soup.
Read paragragh 2 carefully and
answer the questions.
1.How do people deal with the sharks when they catch them
They cut off their fins and
throw them back into the ocean.
2.What will happen if sharks don't have their fins
It can no longer swim and slowly dies.
enjoy a bowl of shark fin soup =
kill a whole shark
Read paragragh 2 carefully and
answer the questions.
3. Is the situation of sharks good now
______ _____ ________sharks
are caught and traded in this
industry every year.
Around 70 million
The numbers of some kinds of
sharks have fallen by over 90
percent in the past 20 to 30 years.
100%
10%
fall by over 90 percent
the numbers of
sharks drop
4. What will happen if the numbers of sharks drop too low
Read paragragh 2 carefully and
answer the questions.
4. What will happen if the numbers of sharks drop too low
It will bring danger to all ocean life.
Why
Because sharks are at the top of the food chain in the ocean’s ecosystem.
Let’s watch a video about this passage.
Then learn the language points.
the number of “...的数量”,当其短语作主语,谓V.用第三人称单数形式, a number of “许多,大量” 当其短语作主语,谓V.用复数形式.
fall by “下降了”,表示变化的幅度,反义短语:increase by “增加了”; fall to “下降到”表示最终的结果,反义短语:increase to”增加到”
in the last/past +一段时间 “在过去的20--30年里”,常与现在完成时连用.
In the last ten years, great changes have taken place in my hometown.
Read paragragh 2 carefully and
answer the questions.
1. What do people do to the sharks
People catch sharks, cut off their fins and throw the sharks back into the ocean.
2. What are the two opinions about killing sharks
①This is not only cruel, but also
harmful to the environment.
②Many believe that sharks can
never be endangered .
Cutting off sharks’ fins and throwing them into back the ocean.
1. What does “this” refer to
Read paragragh 2 carefully and
answer the questions.
1. This is not only cruel,but also harmful to the environment.
Why
Two opinions about killing sharks:
①Without a fin, a shark can no longer swim and slowly dies.
②Sharks are at the top of the food chain in the ocean's ecosystern. If their numbers drop too low, it will bring danger to all ocean life.
the ocean's ecosystem
the food chain
Read paragragh 2 carefully and
answer the questions.
Two opinions about killing sharks:
2. Many believe that sharks can never
be endangered.
(right or wrong )
Why
①But in fact, around 70 million… were caught and traded in this industry every year.
②The numbers …have fallen by over 90 percent in the last 20 to 30 years.
What will happen according to the
numbers
Sharks will die out.
Read paragragh 3 carefully and
answer the questions.
What are the names of the two Environmental protection groups
2. What are they doing & what have they done
3. Are the shark fins good for health？
The WildAid and the WWF.
They are teaching the public about “finning”.They have even
asked governments to develop laws to stop the sale of shark fins.
No. Because no scientific studies have shown that sharks are good for health.
Further thinking：What can we do to protect sharks besides the ways mentioned in Para. 3
Read 3a again and complete the fact sheet below.
Read the passage about sharks and complete the fact sheet below.
3a
Number of sharks caught and traveled every year
How government can help
Two environmental groups against “finning”
70 million
WildAid and the WWF
Develop laws to stop the sale of shark fins
Complete 3b.
Read the passage again and fill in the blanks with the words in the box.
so, although, if, but, when
3b
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
Listen and repeat.
Fill in the blanks according to the passage.
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 a fin. 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 (平衡）['b l ns] of the nature. Please say no to eating shark fin soup,and take actions to save the sharks!
southern
cruel
cut off
swim
harmful
top
Retell the passage according
to the pictures and the key words.
Save the sharks!
`
people cut off their fins and eat shark fin soup.
A shark can no longer
swim and slowly dies.
If sharks’ numbers drop too low,
It will bring danger to all ocean life.
Let’s have a discussion.
What can we do to save the sharks
We can stop eating shark fin soup because “ no buying, no killing”.
We can make a speech, write an article or make some posters(海报) to appeal(呼吁) to people to save the sharks.
We can help create a comfortable environment without pollution for the sharks.
1:Learn as much as you can about sharks.
2:Don't use shark products.
3:Call on(号召) the people around you to protect the sharks.
No sale no killing.
没有买卖，就没有杀害。
Protecting wild animals is just protecting ourselves.
保护野生动物就是保护我们人类自己。
Let’s have a class test.
一、根据句意，用括号中所给词的适当形式填空。
1. Hainan is in the ________ part of China.(south)
2. We all support his __________ research.(science)
3. This is an _____________ animal.We should try to
save it.(danger)
4. Smoking is ________ to your health. You must give
it up.(harm)
5. Tom is _____________ in our school.(strong)
southern
scientific
endangered
harmful
the strongest
Let’s have a class test.
二、根据汉语提示完成句子。
1. 我们必须采取行动来阻止他们。
We must _____ ______ to stop them.
2. 我从没听说过这个人。
I have never ____ ____ such a man.
3. 我们乐意尽力帮你摆脱困境。
We are glad to do what we can do ___ ___ ___.
4. 到目前为止，我已经交了二十个朋友。
____ ____, I have made twenty friends.
5. 实际上，她从没去过那儿。
____ ____, she has never been there.
In fact
take action
heard of
to help out
So far
Homework
There is a “ help save the sharks” volunteer activity in our school to call on more students to save the sharks.
1. Make a nice poster(海报) to catch the students' eyes.
2. Give a short speech to call on people with your poster.
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Unit 13 Section A 3a-3b学案 (知识精讲+分层作业)
【词汇用法】
1. hear of shark fin soup听说过鱼翅羹
2. be harmful to.../do harm to...对……有害
3.Throw ... back into the ocean 把...扔回到大海里
4. bring danger to all ocean life给所有的海洋生物带来危险
5. be endangered濒临灭绝
6. at the top of the food chain in the ocean's ecosystem
在海洋生态系统中处于食物链顶端
7. in this industry 在这个行业
8. fall by over 90 percent 下降超过90%
9. develop laws to stop the sale of shark fins立法来阻止鱼翅销售
10.food chain 食物链
11.the ocean’s ecosystem 海洋生态系统
12.bring danger to ... 把危险带个...
13.be endangered = be in danger 处于濒危中
14.In fact = actually 事实上
15.fall by + 百分数 “下降了...”
16.In the last 20 to 30 years 在过去的二三十年里
17.develop laws 制定法律
18.the sale of ... ...的销售
【词汇用法】
1.hear, hear from, hear of与hear＋(that)从句的区别
hear, hear from, hear of与hear＋(that)从句的用法：
(1)hear单独使用时表示“听见；听到”，常用的结构有：hear sb./sth.，意为“听到某人或某物的声音”。如：
I can't hear anything at all.我根本就听不到任何声音。
1)hear sb. do sth.意为“听到某人做某事”。如：
I often hear Li Ping read English in the morning.我经常在早上听到李平读英语。
2)hear sb.doing sth.意为“听到某人正在做某事”。如：
I heard him singing in the next room.我听到他正在隔壁房间唱歌。
(2)hear from sb.意为“收到……的信；得到……的消息”。如：
Haven't you heard from your father yet 你还没有收到你父亲的信吗？
(3)hear of意为“听说”，后面接名词、代词或动名词。如：
①You have probably never heard of Amy Hayes.你也许从未听说过埃米·海斯。
②I've never heard of that before.我以前从未听说过那件事。
(4)hear＋(that)从句，意为“听说……”。如：
One day, he heard that there was a good doctor in a town not far away.
他听说不远的镇里有一位好医生。
2.not only... but also... “不仅...而且...”
作主语时需要用临近原则
Not only Betty but also I am interested in this book.
不仅贝蒂而且我也对这本书感兴趣。
3.cruel (形容词) “残忍的”
常用搭配：be cruel to sb./ sth. 对某人/某物残忍
They are cruel to the animals. 他们对动物残忍。
4.harmful 形容词，意为“有害的”。常构成短语
be harmful to “对……有害的”。
Staying up often is harmful to your health. 经常熬夜对你的健康有害。
【拓展】
harm 名词，意为“害处”。常用构成短语
do harm to “对……有害”，相当于be harmful to.
Too much smoking does harm to his health. = Too much smoking is harmful to his health. 吸烟过多对他的健康有害。
5.at the top of ... 在...顶端
There is a man at the top of the mountain. 山顶上有个人。
6.the number of + 可数名词复数 “...的数量” 作主语时，谓语动词用单数
A number of + 可数名词复数 “许多...” 作主语时，谓语动词用复数
The number of students is 2000. 学生的数量是2000人。
A number of students are from China.许多学生来自中国。
7.some kinds of ... 几种...
a kind of ... 一种...
all kinds of ... 各种各样的...
different kinds of... 不同种类的
kind of + 形容词 “有点...”
【重点句型】
This is not only cruel, but also harmful to the environment. 这种方法不仅残酷，而且对环境有害。
not only…but also…意为“不仅……而且……”用于连接两个表示并列关系的成分，着重强调后者，其中的also有时可以省略。
如：She not only plays well, but also writes music. 她不仅很会演奏，而且还会作曲。
He not only writes his own plays, he also acts in them. 他不仅是自编剧本， 还饰演其中的角色。
He works not only on weekdays but on Sundays as well. 他不仅平时工作，星期日也工作。
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。
如：Not only you but also he has to leave. 不只是你，他也得离开。
若连接两个句子，not only后面的句子要用倒装。
如：Not only did he speak more correctly, but he spoke more easily.
他不仅说得更正确，而且讲得更不费劲了。
2. 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。)
The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
“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...
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；许多“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.
“fall by” 意为“下降了”，by表示变化的幅度。fall to意为“下降到”。
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.
单项选择
( )1. I don't want to do anything ______ to you. Stay away from me, OK
A. useful B. careful C. harmful D. helpful
( )2. The electricity had been ______ because of the lightning.
A. cut off B. cut down C. cut up D. cut in
( )3. Have you heard ______ this famous teacher in our city His name is Mand.
A. over B. from C. of D. through
( )4. There are ______ number of ducks swimming on the lake. ______ number of them is 200.
A. a; An B. the; A C. the; An D. a; The
( )5. Don't forget ______ thanks when other people help you.
A. accept B. to accept C. say D. to say
二、用所给单词的适当形式填空
6.Greenhouse gases are (harm) to the environment.
7.So far, no (science) studies have shown that shark fins are good for health.
8.Buying things that are (usable) can help protect the environment.
9.Our biology teacher often takes us to the field to know about different __________(ecosystem).
10.I don’t like the man with gold (chain).
三、完成句子。
11.他的中指工作时不小心被机器切掉了。
His middle finger accidentally by the machine while working.
12.事实上,它将给所有的海洋生物带来危害。
, it will danger to all ocean life.
13.这款手机的价格下降了300元。
The price of the mobile phone _____ ______ 300 yuan.
14.据说转基因食品对人类健康有害。
It’s said that the GMF human health.
15.长颈鹿能够到树顶的叶子。
A giraffe can reach the leaves the trees.
四、完形填空
Last Sunday, we had a class trip to enjoy ourselves.Our head teacher took us to the beach for a 16 .When we arrived there at 9:00 a.m.by bus, we heard a big 17 .It was made by the wind and the waves(海浪).It sounded like they were playing wonderful symphony(交响乐).Right away, we sat down and 18 to enjoy our picnic.We told jokes, sang and played games while eating sandwiches, chocolate and other kinds of food.
In the afternoon, some students 19 in the water and swam for fun.Alice and I tried to 20 fish in the water.Some students 21 the cleaners pick up the rubbish.Others played cards and chess.Everyone looked very 22 .
At 4:30 p.m., we had to go back to school, 23 we wanted to spend some more time on the beach.Just then, I found a blue hairband(发带) on the sand.“I think Alice 24 it,” Sam said, “because she likes the blue color.” But I thought it couldn’t belong 25 her because I saw her wearing a yellow one.At last, we knew it was Cindy’s.We went back to school at 5:45 p.m.The picnic came to an end, but we’ll always remember the good time we had.
( )16.A.picnic B.camp C.sport D.party
( )17.A.accident B.sound C.story D.problem
( )18.A.asked B.refused C.started D.agreed
( )19.A.fought B.slept C.studied D.played
( )20.A.bring B.catch C.buy D.lift
( )21.A.joined B.allowed C.helped D.told
( )22.A.happy B.hungry C.worried D.tired
( )23.A.because B.although C.unless D.when
( )24.A.got B.found C.dropped D.took
( )25.A.to B.for C.with D.on
五、阅读理解
You may have heard the saying “The Yangtze River is China’s mother river.” It’s almost 6,400 kilometers long. As the world’s third-longest river, it covers one-fifth of China’s land area. The Yangtze River Economic Zone(长江经济带) covers eleven provinces and cities, making up about 40 percent of China’s total population and GDP.
On December 26, China passed the Yangtze River Protection Law, which came into force on March 1, 2021. It is the first law to protect a waterway in China.
The mother river is in great need of protection because something is wrong with it. For example, because of overfishing and water pollution, the river’s Chinese paddlefish has died out there. There’s also desertified land and soil pollution near the river.
According to the law, fishing will not be allowed in all of the Yangtze’s natural waterways, including its major tributaries(支流) and lakes. Those who are caught fishing will be fined(罚款) 50,000 to 500,000 yuan.
Digging sand will be strictly limited(限制) in the river. Many companies are digging sand along the river. However, this has led to lower water levels on the river, which has caused the river’s water to decline.
Companies and factories along the river will need to focus on green development. If their activities do harm to the waterways, they will be moved away, the law says.
( )26.What does the first paragraph tell us about the Yangtze River
A.How old it is. B.Why it’s important. C.What problems it has. D.Where it joins the sea.
( )27.What do we know about the Yangtze River Protection Law
A.It was passed on March 1, 2021.
B.It came into force about ten years ago.
C.It has increased the population of the area.
D.It’s the first law to protect a waterway in China.
( )28.What does Paragraph 3 explain
A.Why the river needs protection. B.How the river is being polluted.
C.When Chinese paddlefish died out. D.How the river will be protected.
( )29.What does the word “decline” in Paragraph 5 mean
A.Disappear. B.Become worse. C.Be hard to test. D.Be easy to control.
( )30.According to the passage, which is true about protecting the river
A.People can’t fish in the river’s major tributaries.
B.Digging sand will not be allowed in the river anymore.
C.Companies along the river will be moved to other places.
D.Anyone who causes pollution will be fined at least 50,000 yuan.
六、语法填空
We all know that Thanksgiving Day in the United States is a holiday on the 31.__________ (four) Thursday of November. It’s great 32.__________ (funny) for the Americans to come home and have a big dinner. In America, they usually watch a Thanksgiving parade and American football game on TV. 33.__________ (eat) Turkey is their must. And of course Black Friday is one of the 34.__________ (busy) shopping days in the USA. There are two popular theories as to why the day 35.__________ Thanksgiving Day is called Black Friday. One theory is that the wheels of vehicles in heavy traffic on the day after Thanksgiving Day left many black markings 36.__________ the road surface, 37.__________ (lead ) to the term Black Friday. The other theory is that Black Friday comes from 38._________ old way of recording business accounts. Losses are 39.________(record) in red ink and profits in black ink. Many businesses, 40.__________ (especial) small businesses, started making profits before Christmas. Many hoped to start showing a profit, marked in black ink, on the day after Thanksgiving Day.
_________ 32._________ 33._________ 34._________ 35._________
36._________ 37._________ 38._________ 39._________ 40._________
Unit 13 Section A 3a-3b 学案 (知识精讲+分层作业)参考答案
一、单项选择
1-5CACDD
二、用所给单词的适当形式填空
6.harmful 7.scientific 8.reusable 9.ecosystems 10.chains
三、完成句子
11.was; cut off 12.In fact; bring 13.fell by 14.is harmful to/is bad for 15.at the top of
完形填空
16-20 ABCDB 21-25 CABCA
阅读理解
26-30 BDABA
语法填空
31-35 fourth, fun, Eating, busiest, after
36-40 on, leading, an, recorded, especially
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