Unit 13 We're trying to save the earth! 小阅读Section A 3a-4c课件 (共57张PPT)

(共57张PPT)
Section A 3a-4c
Unit 13
We're trying to save the earth.
Do you enjoy ocean？
The ocean is beautiful because of the diversity (多样性) of life.
What is the king of the sea
Dangerous
No predators
（天敌）
In fact,
now
the number of sharks is
less and less.
Who is killing them
Do you think sharks should be extinct
(灭绝)
We
should
save sharks
Fast reading
Find out the main ideas in each paragraph.
Something about shark fin soup.
Sharks are endangered.
Help save the sharks.
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
Careful reading
Para 1
01
What is shark's fin soup
02
What is shark's fin soup made of
It is made of shark fins.
03
What do you know about this dish
famous
expensive
popular
04
From Para 1, what does it mean to enjoy a bowl of shark's fin soup
It means that you're killing
a whole shark.
Why
Careful reading
Para 2
How do people get shark fins
What will happen
if sharks don't have
their fins
When people catch sharks ,they cut off their fins and throw the sharks back into the ocean.
They can no longer swim and slowly dies.
This is not only cruel,but also harmful
to the environment.
Why does it do harm to the environment？
Why does it do harm to the environment.
Sharks are _____________the food chain in the ocean's ecosystem.
If their _________ drop too low, it will _________________all
ocean life.
at the top of
numbers
bring danger to
According to the Para 2, do you think sharks are endangered
The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
Around 70 million sharks are caught and traded in this industry every year.
Why do people eat shark fin's soup
1
2
It is expensive, it is like a symbol of status(地位) .
People think it is good
for their health.
Careful reading
Para 3
Is shark fin's soup really good for your health
It even harms to people's health.
Do you know ocean pollution
Millions of tons of waste enter the oceans every year,polluting the seas，messing the beaches and endangering wildlife.Some litter is eaten by fishes and other sea animals, and then they enter the food chain.
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%
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.
3b Read the passage again and fill in the blanks
with the words in the box.
so although if but when
When
so
but
Although
if
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