Translate these sentences into English.
1. 甚至是河底都满是垃圾。
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.
Unit 13 we’re trying to save the earth!
Section A (3a-3b)
ocean’s ecosystem 生态系统
/'i?k??s?st?m/
ocean life
shark
鲨鱼
Many people think that sharks are too strong
to be endangered,
but they are wrong.
at the top of
the food chain 食物链
They are endangered now.
strong
1
Before you read
Save the sharks!
What will the passage talk about?
Para.1 A.
Para.2 B.
Para.3 C. Sharks are endangered now.
鳍
2
While you read
Fast reading
Read the first and last sentences in each paragraph and match the main ideas.
Two groups against “finning”.
Something about shark fin soup.
猎翅
2. What does it mean when people enjoy a bowl of shark fin soup?
Read Para. 1
They’re killing a whole shark each time they enjoy
a bowl of shark fin soup.
shark fin soup
A dish
be famous
be popular in southern China
be expensive
careful reading
1.What do you know about the shark fin soup?
fact
They cut off their fins.
cut off
throw them back into the ocean.
2.Without a fin, what will happen to a shark?
Read Para. 2
1.How do people deal with the sharks when they
catch them?
It can no longer swim and
slowly dies.
Let’s look at some pictures and find out how people treat sharks.
The sharks are endangered!
This is not only cruel but also harmful
to the environment.
3.Why is it harmful to the environment?
the food chain
at the top of
drop too low
will bring…to…
Some
facts
about
sharks
______ _____ ________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 past 20 to 30 years.
行业 B.工业 C .数字
numbers
Around 70 million
2. What are they doing ? & What have they done?
1.What are the two environmental protection groups
against “finning”?
Read Para. 3
?They are teaching the public about “finning”.
?They have even asked governments to develop laws(法律) to stop the sale of shark fins.
shark fin soup
be endangered
against “finning”
…a bowl of…
…a whole…
cut off…
throw…back into…
will die
cruel &
harmful
at the top of…
If…drop too low
will bring…to…
WildAid&WWF
be teaching…about…
…have asked…to
develop laws to…
Save the Sharks!
No scientific studies
have shown that
shark fins are good
for health.
Without a fin
famous
expensive
popular
fact
70 million/90 percent
fact
fact
1.Retell
After you read
3
2.Read the passage again and fill in the blanks with the words in the box.
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.
so
although
if
but
when
when
so
but
Although
if
/fur
kill them for their ivory
Should we let them disappear?
1. Why are they endangered?
2. What will happen if their numbers drop too low?
3. What should we do to protect them?
For ourselves, …
For the government,…
pollute…
have no place…
kill them to
eat
make clothes
make money
…
…
If … drop too low, …will bring…to…
stop eating…
buying…
polluting…
develop laws to …
…
…
21世纪教育网
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 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…
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. She not only plays well, but also writes
music.
她不但很会演奏，而且还会作曲。
Not only boys but also girls were
chosen.
不仅仅是男孩，女孩也有被选中的。
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.
吸烟有害健康。
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)
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。
⑴ afford是动词，意为“买得起,担负得起”，通常与can, could, be able to连用,多用于否定句中。
They couldn’t afford $50 for a ticket. 他们拿不出50美元买一张票。
⑵ afford后面常跟带to的动词不定式。
We can’t afford to go abroad this summer. 今年夏天我们没有足够的钱出国。
例句：Miss Taylor never wastes money on anything too expensive, even though she can _____to. She has donated much of the money she saved to charities.
A. afford B. allow C. remind D. pay
1. 多一个人少一个人无所谓。
One person wouldn’t ____ ____ __________.
2. 这个木箱时装满了书。
The _______ box ____ ____ ____ books.
3. 不健康的饮食对这种疾病的传播起一定的作用。
Unhealthy foods ___ ___ ___ ___ the spread of the disease.
4. 这条小路通向公园。
The path ____ ____ the park.
5. 我错拿了你的包。
I took your bag _____ ____ mine by mistake.
wooden is full of
make a difference
lead to
paly a part of
instead of
II. 单项选择。
1. —Are you going to _____ any of the events?
—Yes. Maybe long jump and high jump.
A. take part in B. join
C. attend D. join in
2. I can’t afford ____ him an expensive birthday present.
A. to buy B. buying
C. for buying D. buy
3. —Remember to ____ the lights when you leave the room.
—OK. I will.
A. turn on B. turn down
C. turn up D. turn off
4. The girl always has some money to ___ snacks.
A. spend B. pay for
C. take D. cost
5. —Look! _____ boys are playing on the
playground.
—Yes. _____ them is about 200.
A. The number of; A number of
B. The number of; The number of
C. A number of; the number of
D. A number of; A number of
III. 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
1. Read the passage again.
2. Make a poster to call on people to protect wild animals.
3. If you have time, watch a movie—
Sharkwater.
Thank you for listening!
