(共58张PPT)
Unit 13
We’re trying to save the earth!
Unit 13
We’re trying to save the earth!
Section A 3a-3b
Section A 3a-3b
Watch a video
What was served to them
Why do they refuse to eat
What was served to them
2.Why do they refuse to eat
Sharp fin soup.
Cruel
Let’s free talk.
Weight
up to __ tons
Length
__ cm – __ m
Habitats
__________
Lifespan
寿命
__ – ____ years
Species
more than _____
_____ (or _____)
at the ____ of the food chain [t e n] in the ocean’s ecosystem [ [i k s st m]
Diet
What do you know about sharks
Facts about sharks
20
19
11
oceans
20
150
1,000
flesh
meat
top
whale shark
The largest
dwarf lantern shark
The smallest
Shark is the king of the sea
Dangerous
No predators
（天敌）
Less and less
Who is killing them
What if there were
no
sharks？
We
should
save sharks
Read 3a fast and match every paragraph with its main idea.
c. Talk about shark fin soup.
b. Sharks are endangered now.
a. Call up people against eating shark fins.
Paragraph 1
Paragraph 2
Paragraph 3
Fast reading
Scanning
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 goverments 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 WWF
3a
1. Where is shark fin soup popular
Shark fin soup is popular _________________.
in southern China
Read Paragraph 1 and finish the tasks.
2. Many people do not realize they are killing a whole shark _______ they enjoy a bowl of shark fin soup.
when
Careful reading
3b
True or False.
( ) Shark fin soup is a famous but cheap dish.
( ) You’re killing a whole shark to have the soup.
F
T
Read Paragraph 1 and finish the tasks.
Careful reading
1. How many sharks are caught and traded every year
A. 70 billion B. 70 million
C. 90 million D. 20 million
Read Paragraph 2 and finish the tasks.
2. Sharks are at the top of the food chain [t e n] , ________ if their numbers drop, the ocean’s ecosystem [ i k s st m] will be in danger.
so
3. Many think that sharks are too strong to be endangered, ________ they are wrong.
but
Careful reading
____ ____
can no longer ________ and ______
3a
Read Paragraph 2 and finish the tasks.
human activities
The writer’s attitude
throw back
cruel
harmful to the environment
What happens to a shark
cut off
swim
dies
Careful reading
facts about sharks
at the top of the ______ ______ in the ________ ____________
70 million ________ and _______
______ by 90 percent
Read Paragraph 2 and finish the tasks.
3a
food chain
ocean’s ecosystem
caught
traded
fallen
Careful reading
3b
1. How can governments help
__________________________________________.
2. Two environmental groups against “finning” are:
__________________________________________.
To develop laws [l ] to stop the sale of shark fins
Wild Aid and the WWF
Read Paragraph 3 and finish the tasks.
Careful reading
3b
3. _________ there are no scientific [ sa n t f k] studies to support this, a lot of people believe that shark fins are good for health.
4. Sharks may disappear one day _________ we do not do something to stop the sale of shark fins.
Although
if
Read Paragraph 3 and finish the tasks.
Careful reading
1. Where can you find the article
A. From a novel.
B. From a magazine.
C. From a diary.
Post reading
2. What is the type of the magazine
About animal protection.
3. Underline words or sentences to express the writer’s opinion.
Post reading
what does the passage want to tell us
at the top of the food chain
catch ....cut off...
eat
no longer swim
slowly dies
around 70 million...
are caught and traded
bring danger to....
kinds of sharks have
fallen....over 90%
Let’s draw a mindmap and retell.
1. Learn as much as you can about sharks.
2. Don't use shark products.
3. Reduce your seafood consumption.
4. Reduce,Reuse,Recycle.
5. Donate and volunteer with shark conversation organization.
6. Call on the people around you to protect the sharks.
Language
Points
Key words
1. heard of / about 听说
2. a bowl of 一碗
3. cut off 切除
4. throw back 扔回
5. not only ... but also... 不但...而且...
6. be harmful to 对...有害
7. no longer 不再
8. at the top of 在...顶部...
Key words
9. the food chain 食物链
10. ocean ecosystem 海洋系统
11. bring danger to sb. 给某人带来危险
12. in fact 事实上
13. the numbers of ...的数量
14. fall by 下降了
15. Environmantal protection 环境保护组织
group
Key words
16. develop laws 立法
17. the sale of ...的售卖
18. so far 到目前为止
19.scientific studies 科学研究
But do you realize that you're killing a whole shark each time you enjoy a bowl of shark fin soup.
each time 每一次的...时候，引导时间状语从句
拓展：
类似的可以引导时间状语从句还有
every time, the last/first time等。
This is not only cruel, but also harmful to the environment.
be harmful to 对...有害
拓展：harmful的名词形式为harm。
同义： do harm to....
be bad for...
Many believe that sharks can never be endangered because they are the strongest in their food chain.
endangered: adj. 濒临灭绝的
dangerous ： adj. 危险的
danger： n. 危险，威胁
Two environmental groups against “ finning”.
against:
1. against war
2. against the wind
3. against the wall
4. against the tree.
反对
逆着
撞到
倚着
Grammar
Focus
读一读，并说出每一个句子所用到的时态或者语态。
现在进行时
used to 的用法
被动语态
现在完成时
情态动词的用法
1. 什么时候用现在进行时？
2.现在进行时的结构是什么？
3.现在进行时的标志性词语有哪些？
4.现在分词的构成规则有哪些？
1. Be quite, please. The baby is
sleeping.
2.Look! Kenny is swimming happily
in the pool.
3. Now people are taking action
animals.Let's join them.
4.Listen to carefully please. I am
talking about something very
important.
观察与讨论
1. 现在完成时态的用法有哪些？
2.现在完成时的结构是什么？
3.现在完成时的标志词有哪些？
4.过去分词有哪些构成规则？
观察与讨论
1. He has kept this book for over 2
months. Please ask him to return it
soon.
2. We have lived here since my little
sister was born. I like the people here.
3. Have you ever been to Australia It is
a beautiful country.
4. He has already tried this to solve the
problem, but it didn't work.
1. 主动语态和被动语态有什么区别？
2.被动语态的构成是什么？
3.一般现在时，一般过去时，一般将来时和
情态动词的被动语态结构分别是什么？
观察与讨论
1. Photos and experiences are shared
on the microblog.
2.The video was sent our quickly and
was seen by many schoolmates.
3. In the future, robots will be used
by more and more people.
1. 情态动词有无人称的变化？
2.情态动词后接动词的什么形式？
3.你知道的情态动词有哪些？
各代表什么意思？
观察与讨论
1.Ken can climb up trees like a koala.
2.Tracy could ride a bicycle when she
was five years old.
3.You mustn't play with fire. It is dangerous.
4.It's raining outside, so I have to take an
umbrella with me.
5.As a student, we should obey the school
rules.
6. The light is on in the office. Someone
may be there.
1. used to 表示什么意思？后接什么？
2.used to 句型的否定句和一般疑问句的
形式是什么？
3.used to 和 be used to 的区别？
观察与讨论
1. James used to wake up late, but
now he gets up very early.
2. Did Cherry use to live in Shanghai
when she was a child
A. 现在进行时表示（说话瞬间）________或
______的动作，也可以表示当前________的活
动或现阶段________的动作。
B.谓语构成： __________________
C. 标志性词汇： _________, _________,_________
_______etc.
正在进行
发生
一段时间
正在进行
be（am/is/are）+ v.-ing
now
right now
Look!
Listen!
D. 现在分词的构成:
a.一般情况下在动词词尾加______. 如：go — going
b. 以不发音e结尾的动词，__________. 如： have— having
c. 以一个辅音字母结尾的重读闭音节，__________,
再加______。 如： stop —stopping。
-ing
去掉e加-ing
双写最后一个字母
-ing
A. 现在完成时的用法：表示动作_______, 但对现在_______.
或者表示从过去某一点时间开始________ 到现在并还可
能_____________的动作。
B.现在完成时的结构：________________
C. 标志性词汇：_______, _______, _______,before , so far ,
for + 时间段，since + 时间点 etc.
已经完成
造成影响
一直延续
继续延续下去
have/has + 过去分词
already
yet
ever
D. 过去分词的构成：
a.一般情况下，在动词后面加_____。如：work—worked
b.在-e结尾的动词后只加______。 如：close — closed
C. 在以辅音字母加y结尾的动词，应将__________。
如：study — studied
D：以重读闭音节结尾的动词，要_____末尾的辅音字母再加 ______。
如：stop — stopped
-ed
-d
将y改成i再加ed
双写
-ed
D. 过去分词的构成：
e.不规则动词的过去分词:
AAA型 put put put
AAB型 beat beat beat
ABA型 become became become
ABB型 get got gotten
ABC型 begin began begun
A.主动语态和被动语态区别：
主动语态表示主语是动作的______。
被动语态表示主语是动作的_______，即行为动作的对象
B.被动语态的构成：____________。
C.一般现在时被动语态：____________+过去分词
一般过去时被动语态：____________+过去分词
一般将来时被动语态：____________+过去分词
情态动词的被动语态：can/could/may/might
should/must+______ + _____
发出者
承受者
be+过去分词
am/is/are
was/were
will/be going to
be
过去分词
A: 情态动词通常______（有/无）人称和数的变化。
B： 情态动词后接_______。
C: 情态动词有：________能够；
________可能、可以；
________需要：
________不得不；
________愿意、将要；
_______将(第一人称) ；
_______应该；
_______必须
无
动词原形
can/could
may/might
need
have to
would
shall
should
must
A：used to表示_______________，后接___________。
B: used to句型的否定句是___________，
一般疑问句的形式______________________
C: used to和be used to的区别：
used to do表示_________________， 而现在往往不做了；
be used to doing表示_____________;
be used to do 表示_____________。
过去常常做某事
动词原形
didn't use to
Did + 主语+ use to
过去常常做某事
习惯于做某事
被用来做某事
1)用括号中所给动词的正确形式填空。
①The girls____________(dance) in the classroom.
②It's 5 o'clock now.Mike____________(have) dinner.
③—______ you ever_____(be) to the US .
— Yes， twice.
④—May I speak to John
—Sorry，he_____(go) to NewYork.He will be back in two days.
⑤—Do you know Mr.White well
—Yes.He _________ (work) for the WWF for two years.
are dancing
is having
Have
been
has gone
has worked
1)用括号中所给动词的正确形式填空。
⑥ I_________ (live) here since 1999.
⑦—Do you of en clean your classroom
—Yes.Our classroom________(clean) everyday.
⑧—Did you goto Jack's birthdayparty
—No，I___________ (not invite) .
⑨—What is this
—It'saCD.This CD_______(use) for learning English.
⑩A new highway in my hometown_______ (build) next month
have lived
is cleaned
was invited
is used
will be built
2)情态动词练习：根据题意选择最适合的情态动词。
①—_____you pass me a pen I'd like to write down the
phone number.
—Sure.Here it is.
A.Can B.Need C.Might D.Must
②—May I go to the cinema， Mom
—Certainly， but you_____ be back by 11 o'clock.
A.can B.may C.must D.need
③You_____ worry about me.It's nothing serious.
A.can't B.mustn't C.needn't D.won't
A
C
C
2)情态动词练习：根据题意选择最适合的情态动词。
④—Excuse me.Is this the right way to the Summer Palace
—Sorry，I'm not sure.But it_____be.
A.might B.mustn't C.can't D.must
⑤The man in the office_____be Mr.Black， because he went
home just now.
A.mustn't B.may not C.can't D.needn't
A
C
3)used to do 练习
A.她过去常常周末和朋友闲逛
She____________________with friends on weekends.
B他习惯于每天晚上睡得很晚。
He____________________________________at night.
C.Ken used to be afraid of dogs.(改为一般疑问句)
___________________________________
used to hang out
is used to sleeping late / staying up
Did Ken use to be afraid of dogs
we can't afford to ______ (wait)any longer to take action!
4a. Fill in the blanks with the correct forms
of the verbs in brackets.
Have
taken
helped
considered
had
had
took
think
came
trying
wait
迫不及待
4b. Fill in the blanks with the appropriate mood verbs(情态动词) from the box.
can
would
could
have to
should
must
may/
might
People _______think that big things_______ be done to save the earth. Many forget that saving the earth begins with small things. For example, you_______ save electricity by turning off the lights when you leave a room. You _________also use reusable bags instead of plastic bags. I think it's a great idea that you now ________ pay for plastic bags. And instead of driving to school or work, you ____________ride your bike or walk. If it's far, you ___________take the bus. All these small things _______add up and become big things that _________improve the environment. Let's take action now!
may/might
must/have to
can/could/should
have to
can/could/should
can/could/should
can/could
can/could/
would
加起来
can/could
4C. Make a list of things that people can do to help the environment and discuss your list with your partner.
Use public transportation_________
_______________________________
A: I think that everyone should use public transportation.
B: I disagree. It 's difficult for parents with young children to
use public transportation......
谢谢大家
