(共31张PPT)
Unit 13 We’re trying to save the earth!
Period(Two)Section A(3a-3c)
版本:人教版九年级全册
1. To understand the passage about the
endangered animal – sharks.
2. To have the awareness of protecting
the sharks and respecting nature.
3. To learn some words and expressions.
New words
残酷的；残忍的(adj.)
有害的(adj.)
工业；行业 (n.)
法律；法规(n.)
科学上的；科学的(adj.)
承担得起；买得起(v.)
cruel
scientific
afford
harmful
law
industry
鲨鱼(n.)
(鱼)鳍(n.)
链子；链条 (n.)
生态系统(n.)
可重复使用的(adj.)
运输业；交通运输(n.)
shark
reusable
transportation
fin
ecosystem
chain
/ ɑ rk/
/f n/
/t e n/
/'i k s st m/
/ ri 'ju z bl/
/ tr nsp r'te n/
对……有害
在……顶部或顶端
食物链
参加
关掉
付费；付出代价
采取行动
be harmful to
at the top of
the food chain
take part in
turn off
pay for
take action
New phrases
1. 甚至河底都满是垃圾。
2. 这个镇上的每个人都应该参与清扫。
Even the bottom of the river was full of rubbish.
Everyone in this town should play a part in cleaning it up.
3. 骑自行车有其它的优点。
4. 我买外卖食品从来不拿木筷子和塑料叉子。
There are other advantages of bike riding.
I never take wooden chopsticks or plastic forks when I buy takeaway food.
The earth is badly polluted.
What should we do to save the earth
Let’s take action (采取行动)
Turn off the lights
when you leave a room.
Recycle books and paper.
Take buses instead of driving cars.
There are some animals which are endangered. We should do something to protect the animals and the environment!
Save the earth!
Save the animals!
The zoos provide homes for many
endangered animals.
1. What do you know
about sharks(鲨鱼)
2. Do you think sharks can be endangered Why
3. What do you think might cause a fall in the number of sharks
3a
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 governments can help
Two environmental groups against “finning”
In southern China
Around 70 million
To develop laws to stop the sale of shark fins
WildAid and the WWF
against介词，在此处意为“反对”。其反义词为for，意为“支持”。be against ( doing) sth.意为“反对（做）某事”。
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
hear of意为“听说﹔了解；知道”，强调从他人那里得到的消息。
同义短语为hear about。
Save the sharks!
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
at the top of 意为“在……顶部或顶端”。
反义短语：at the bottom of 在……的底部或底端
be harmful to…
对……有害
cruel形容词，意为“残酷的；残忍的”。be cruel to sb./sth.意为“对某人/某物残忍”。
the food chain 食物链
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.
can在此句中意为“可能”，表推测﹐常用于否定句或疑问句中。can’t be意为“不可能是”。
辨析endangered, dangerous与danger
endangered 形容词，意为“濒危的;濒临灭绝的”；
dangerous 形容词，意为“危险的”；
danger名词﹐意为“危险；威胁”。
in fact意为“事实上；实际上”。一般位于句首或句中。
fall by意为“下降了……”，其中 by作介词，表示变化的幅度。
the numbers of...意为“……的数量”，是固定短语the number of的复数形式。此处numbers表示不同种类的鲨鱼的数量。
percent名词，意为“百分之……”。仅用在基数词后﹐无论基数词数值为多少，percent都用单数形式。
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!
制定法律
so far意为“到目前为止；迄今为止”，常与现在完成时连用。
【拓展】scientific的相关词:
scientific adj. 科学上的；科学的
science n. 科学
scientist n. 科学家
听说；了解；知道
对……有害
在……顶部或顶端
食物链
事实上；实际上
……的数量
下降了……
制定法律
到目前为止；迄今为止
be harmful to
at the top of
the food chain
hear of
in fact
the numbers of...
fall by
so far
develop laws
Summarize the key phrases
Read the passage again and fill in the blanks with the words in the box.
3b
so although if but when
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
so
so although if but when
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
Group work
What can we do to save the sharks Work with your group members and make a poster about shark protection.
Language points
1. Without a fin, a shark can no longer swim and slowly dies.
没有鱼鳍，鲨鱼不能再游泳然后慢慢死去。
no longer不再 = not…any longer/ not… any more, 但它们侧重的方面不同。
no longer和not…any longer侧重时间。
e.g. Mr. Brown no longer works here.
= Mr. Brown doesn’t work here any longer.
布朗先生不在这工作了。
not ... any anymore侧重程度和数量。
e.g. You can’t drink any more.
你不能再喝了。（喝酒的量到了一定的程度，不能再继续喝下去了。）
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… “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。
be harmful to 对……有害
be bad for 对……有害
e.g. She not only plays well, but also
writes music.
Not only does my sister sing well, but she
dances well.
Not only the students but also the
teacher is working hard.
not only置于句首时，常用_____语序。
not only... but also...连接两个主语时，谓语动词须与_____ (前面/后面)那个主语在人称和数上保持一致，就近原则。
倒装
后面
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. He shouted at the top of his voice in
order that he might be heard.
他尽力大声叫喊, 为了别人能听见。
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numbers表达全海洋中鲨鱼的总量。
In that country, the number of children going to school is higher in cities than in towns and villages.
在那个国家，城市儿童入学人数比乡镇及农村要高。当表示数值的高或低时，number要用__________修饰。
常与number搭配的动词有grow, fall等。
high或low
Summary
1. 听说
2. 一碗鱼翅羹
3. 切掉
4. 对……有害
5. 不再
6. 在……顶部 7. 食物链
8. 环境保护组织
9. 立法
hear of
a bowl of shark fin soup
cut off
be harmful to
at the top of
the food chain
no longer
environmental protection group
develop laws
I. 用所给词的适当形式填空。
1. The old man used _____ (be) a teacher.
2. We should _____ (clean) the room every day.
3. Look! Tom _________ (sleep) in his room.
4. Lots of trees __________ (plant) on the hill every year.
5. He _________ (live) here for 20 years.
to be
clean
is sleeping
are planted
has lived
Exercise
3. —At present, one of the best ways to study is
working in groups.
—More chances ______ to students to learn from
each other.
A. offer B. are offered
C. have offered D. are offering
Homework
1. Recite the new words and expressions you’ve learned today.
2. Write 5 measures to protect the
environment.中小学教育资源及组卷应用平台
Unit 13 We’re trying to save the earth!
Section A (3a-3c)练习
一. 词汇翻译。
1. 鲨鱼n. ____
2. (鱼) 鳍n. ____
3. 科学上的；科学的adj. ____
4. 残酷的；残忍的adj. ____
5. 有害的adj. ____
6. 链子；链条n. ____
7. 生态系统n. ____
8. 工业；行业n. ____
9. 法律；法规n. ____
10. 鱼翅汤 _________
11. 处于食物链的顶端 _________
12. 在过去的20到30年间 _________
13. 环境保护组织 ________
14. 健全法律 _________
15. 鱼翅买卖 _________
二. 根据句意及所给汉语提示，写出所缺单词。
1. These _______ (渔民) go fishing near the lake every day.
2. In order to do the _______ (科学的) research, we'll have to collect as much information as possible.
3. Of the four buildings, I think Meilian Building is the _______ (难看的).
4. Do you know several traffic _______ (法规) will be made
5. This bike _______ (花费) me 500 yuan. I bought it last week.
三. 根据句意，从方框中选择恰当的单词填空，有的需要变换形式。
advantage, cruel, industry, coal, wood, plastic
1. The old _______ bridge has been over the river for many years.
2. The burning of _______ and oil causes serious air pollution.
3. There are lots of _______ bags floating (漂浮) in the river, making it very dirty.
4. We all know that the development of modern _______ has improved our living conditions.
5. “Don't be _______ to me! I can't stand it!” he cried in an angry voice.
6. As a basketball player, he has some _______. For example, he is very tall.
四. 根据汉语意思完成英语句子，每空一词。
1. 这条河很干净，在它的底部我们可以看到很多鱼。
The river is clean and we can see lots of fish _______ _______ _______ _______ it.
2. 我们正在尽力减少空气污染。
We are trying to _______ _______ _______ _______.
3. 我们相信新科技将带来更美好的生活。
We believe that new technology will _______ _______ a better life.
4. 熬夜对健康有害。
Staying up too late _______ _______ _______ health.
5. 在山顶，我看到了整个城市。
_______ _______ _______ _______ the mountain, I saw the whole city.
6. 你能告诉我什么是食物链吗？
Could you tell me what _______ _______ _______ is
7. 我们必须阻止他们往河里扔垃圾。
We must stop them _______ _______ _______ the river.
8. 这条河被严重污染，我们应该清理它。
The river was badly polluted. We should _______ _______ _______.
五. 根据对话内容，从方框中选择恰当的选项补全对话，其中有两项多余。
A: Hello, Jenny. (1) _______
B: I'm reading newspapers about protecting the environment.
A: Oh, I hear you're working for an organization that protects the environment.
B: Yes. (2) _______
A: Well, can you tell us what you are doing there
B: (3) _______ For example, the three R's — reduce, reuse and recycle. All of them are important.
A: So what can we do at home to protect the environment
B: (4) _______ For example, we should use both sides of paper and reuse plastic bags.
A: What can students do at school
B: Recycling is a good way to protect the environment and save money. (5)_______
A: Good! Thank you for your advice!
A. What's it about B. What are you doing C. I have worked for it for two years.D. What organization are you working for E. We should reduce (减少) the waste we produce.F. So we encourage students to collect waste paper and recycle it.G. I mainly hand out notices to tell people about protecting the environment.
参考答案：
一、1. shark 2. fin 3. scientific 4. cruel 5. harmful 6. chain 7. ecosystem 8. industry 9. law
shark fin soup 11. at the top of the food chain 12. in the last 20 to 30 years
environmental protection groups 14. develop laws 15. the sale of shark fins
二. 1. fishermen 2. scientific 3. ugliest 4. laws 5. cost
三. 1. wooden / wood 2. coal 3. plastic 4. industries 5. cruel 6. advantages
四. 1. at the bottom of 2. cut down air pollution
3. lead to 4. is harmful to / bad for
5. At the top of 6. the food chain
7. throwing litter / rubbish into 8. clean it up
五. 1-5 BCGEF
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