-
Unit 13 We’re trying to
save the earth!
一、教学目标：
1.
语言知识目标
基本词汇：
litter, bottom,
fisherman, coal, ugly, advantage, cost,
wooden, plastic, takeaway,
bin, shark, fin, cruel, harmful,
chain, ecosystem, industry, law,
scientific, afford,
reusable, transportation, recycle,
napkin, upside, gate,
bottle, president, inspiration, iron,
work, metal,
creativity,
基本词组：
be harmful to, at the
top(of sth.), take part in, turn off, pay
for,
take
action, throw away, put sth. to good use, pull…
down, bring back
基本句型：
We’re trying to save
the earth
.
The river used to be so
clean.
The air is badly polluted.
No scientific studies have
showed that shark fins are
good for health.
We should help save the
sharks.
2.
技能目标
:
能正确运用现在进行时，现在完成时，被动语态，情态
动词和
used to
句型。
3.
情感目标
:
有环境危机意识，学会关注环境保护环境。
二、教学重难点：
1.
教学重点：
< br>（
1
）能正确运用现在进行时，现在完成时，被动语态，
情态动词
和
used to
句型。
（
2
）保护环境的措施方法。
2.
教学难点：能正确运用现在进行时，现在完成时，被动语态，情
态动词和
used to
句型。
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Section A 1 (1a-2d)
I. Presentation
Show the picture of the earth and tell
students the earth is polluted
now.
For example:
(1)
The factories that burn coal pollute
the air with a lot of black smoke.
(2)
Factories put waste into the river.
(3)
People should throw away litter in the bin.
(4)There are more cars on the road.
II. Learning
Here are some
words related to different kinds of pollution.
Write them in the box
below. Then add
more words.
loud music
cars
rubbish
planes
littering
ships
factories
smoking
building houses
mobile phones
noise
pollution
air pollution
water pollution
____________
___________
_____________
____________
___________
_____________
____________
___________
_____________
____________
___________
_____________
Keys : noise pollution
loud music
planes
mobile
phones
building houses
air pollution
factories
smoking
cars
building houses
water
pollution
ships
rubbish
littering
factories
III. Listening
1. 1b Listen
and complete the sentences.
What was
the problem?
The river was
_____________. Even the bottom
(
底
部
) of the river
was full of ________. There were no
more ______ for fishermen
(
渔民
) to catch.
What caused the
People are
throwing _______ into the river. Factories
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problem?
How
should the problem
be solved?
are putting ______ into the river.
We should write to the ____________ and
ask them
to ___________ the factories.
Everyone should help
to __________ the
river.
Keys:
really dirty
rubbish
fish
litter
waste
government
close down
clean up
2. Listen again and
check (√) the sentences you hear.
1) We could go
fishing in the river.
2) The river was really dirty.
3) The river
has always been the nicest river in this town.
4) We should
ask the teachers for help.
Keys: 2 3
IV. Practice
1. Role-play the conversation in 1c.
Mark: The river
was dirty. Even the bottom of the river was full
of
rubbish.
Tony: But it used to be so
clean!
Mark:
Yes, but people are throwing litter into the
river.
Tony:
Everyone in this town should play a part in
cleaning it up!
2. Make conversations
using the pollution in 1a.
A: The river has always been the nicest
river in this town.
B: Yes, it used to be so clean.
A: But I was
there last weekend and the river was really dirty.
B: What caused
the problem?
A:
People are throwing litter into the river.
B: What should
we do?
A:
Factories are also putting waste into the river.
B: Yes,
everyone in this town should play a part.
A: We should
write to the government and ask them to close down
the
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factories.
B: What else
can we do?
A:
Everyone should help to clean up the river.
V. Language points
1. We’re
trying to save the ea
rth!
我们正在竭尽全力拯救地球
!
try to do =try one’s best
to do
努力去做某事。
e.g. Every student should
try to study hard in order to study in a
university.
为了进入大学学习，每个学生都应该努力学习。
2. Here are some words related to
different kinds of pollution.
be related to
与……
有
关
e.g. I am not
related to him in any way.
我和他无任何关系。
3.
Everyone in this town should play a part in
cleaning it up!
play a part in
在……方面起作用
e.g. A good diet plays a
large part in helping people live longer.
健康的饮食在帮助人们长寿方面起着非常大的作用。
play a part
在……中扮演角色
e.g. He was
invited to play a part in this TV play.
他被邀请参加这个电视剧的演出。
4. Even the bottom of the river was
full of rubbish.
Yes, but
people are throwing litter into the river.
litter
和
rubbish
都可指“垃圾”，用作不可数名词。
rubbish
指“没用的东西<
/p>
(
被扔或将要丢弃的无用的东西)”不可回
收。
litter
指“(室内或公共场所
)
乱扔的废物
(
纸屑、不要的包装纸、
废
瓶等)”还可回收
e.g. Throw the rubbish out.
把垃圾扔出去。
The room is
full of rubbish.
房间里堆满了垃圾。
Pick up your
litter after a picnic.
野餐后将废弃物收拾好。
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VI. Listening
1. 2a Listen to the interview. Circle
the kinds of pollution that Jason and
Susan talk about.
A. land
pollution
B. air pollution
C. noise pollution
D. water pollution
Keys: B A
2. 2b Listen again and complete the
sentences.
1) The air is badly polluted
because there are ___________ on the road
these days.
2)
Factories that burn coal also ________ the air
with a lot of black
smoke.
3) There is also too much rubbish and
waste. People
_________________ things every day.
4) People are also littering in
______________ like parks. This is
turning beautiful places into ugly
(
丑陋
) ones.
Keys:
more cars
pollute
are
throwing away
public places
3. Listen and answer the questions.
1) Who is the interviewer talking to?
2) What are they talking?
3)
What other problems do they see?
Keys:
Susan and Jason.
The
environmental problems.
There’s too much rubbish and waste in
the streets.
VII. Practice
(2c)
Use the information in
2a and 2b to role-play conversations between Jason
and Susan.
Jason: The air has become
really polluted around here. I’m getting very
worried.
Susan:
Yes, I used to be able to see stars in the sky.
Jason: The problem is that…
VIII. Discussion
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Ask students what we should
do to save the earth. Help students answer, turn
off the
lights when you leave a room;
stop riding in cars; stop using paper towels or
napkins;
recycle books and paper.
IX. Reading
1. Work on 2d.
Role-play the conversation.
Interviewer: Jason and
Susan, what are your ideas for solving these
problems?
Jason: Well, to
cut down air pollution, we should take the bus or
subway instead of driving.
Susan: Yeah, or ride a bike. There are
other advantages (
优点
) of
bike
riding. It’s good for
health and it doesn’t cost
(
花费
) anything!
Interviewer: Great ideas! What about
waste pollution?
Susan: Mmm, I think
simple things like bringing a bag to go shopping
can help. I started doing
that a year ago.
Jason: Me, too. Also,
I never take wooden chopsticks or plastic
(
塑料
)
forks when I buy takeaway
food(
外卖食品
). I use the ones
at
home.
Susan:
And remember to throw rubbish in the bins and keep
public
places clean and
beautiful for everyone.
Interviewer: So
together, our actions can make a difference and
lead to
a better future!
X. Summary and language points
1. This is turning beautiful places
into ugly ones.
turn… into…
把
……
变成
……
e.g. The icy
rain seemed like to turn into snow.
渐渐地冻雨又变成雪花的模样。
2. It’s good for health and it doesn’t
cost anything!
cost v.
花费；使付出
指花费金钱，主语通常是物。
co
st
的过去式和过去分词均为
cost
。
e.g. The new shirt cost Mr Wang 200
yuan
.
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王先生花了
200
< br>元买了新衬衫。
How much does the new
computer cost?
新电脑花了多少钱？
take,
spend, pay & cost
take
，
spend
，
pay
和<
/p>
cost
都可以表示“花费”，但它们的用法各有不同。
1)
take
多表示花费时间，常用于
It takes sb.
some time to do sth.
这
一句型中，其中
it
作形式主语。
e.g. It usually takes
me 40 minutes to cook the dinner.
2) sp
end
多表示花费时间和金钱，主语通常是人，常用于
sb.
spend(s)
some time / money
on sth.
和
sb. spend(s) some
time / money (in)
doing
sth.
两种句型。
e.g. David spent 2,000
yuan
on the new machine.
My father
spends an hour (in) watching the news on TV every
day.
3)
pay
多表示花费金钱，主语通常是人，常用于
sb.
pay(s) some
money for
sth.
句型。
e.g. Tommy paid 20
yuan
for his breakfast
yesterday.
4)
cost
多表示花费金钱，主语通常是物，常用于
sth.
cost(s) (sb.)
some money.
句型。
e.g. The new dress cost Linda 88
yuan
.
根据句意用
take, spend, pay
或
cost
的适当形式填空。
1) That new car ________ them lots of
money.
2) Mona __________ 50
yuan
on the books just now.
3) It usually _______ me an hour to do
my homework.
4) You should __________
some time practising your pronunciation.
5) My brother _______ 6, 000
yuan
for the new computer
yesterday.
Keys:
cost
spent
takes
spend
paid
3.
So together, our actions can make a difference and
lead to a better
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future!
make a difference (to…)
表示
(
对……)产生影响或作用
e.g. Do you think
his words would make any difference to the final
decision?
你认为他的话会对最后的决定产生影响吗？
The new teacher always
encourages little Tom. This has made a big
difference to him.
新来的老师总是鼓励小汤姆，这对他影响很大。
XI. Exercises
用动词的适当形式填空。
1)
We’re trying _______ (save) the earth.
2) There used to_____ (be) clean and
beautiful.
3) There are too many ______
for ________to catch (fish).
4) It’s
bad for environment to use _________ (wood)
chopsticks.
Keys: to save
be
fish
fishermen
wooden
XII. Think about
The earth
is badly polluted. Please make a poster and think
of what we can do.
XIII. Homework
1. Copy the new words and remember
them.
2. Read the listening materials
of 1b, 2a.
Section A 2 (3a-3b)
I. Revision
(1) Role-play
2d.
(2) Translate these sentences into
English.
①甚至是河底都满是垃圾。
②这个小镇上的每个人都应该参加打扫。
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。
II. Lead in
(1) Teacher tells students the earth is
badly polluted. What should we
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do to save the earth? Let’s
take action. For
example:
①
Turn off the
lights when you leave a room;
②
Take buses
instead of driving cars
③
Recycle books and paper.
(2) There are
some animals are endangered. We should do
something
to protect the
animals and the environment!
III.
Discussion
(1) Have you
ever seen a shark?
(2) What do you know about sharks?
IV. Reading
(1) Sharks are endangered, read the
passage and judge the sentences.
①
Shark’s fin
(
鱼鳍
) soup is famous and
expensive all around the
world.
②
We have
to kil
l a whole shark to get a bowl of
shark’s fin soup.
③
People cut off sharks’ fins
and throw the sharks back into the
ocean.
④
Sharks
are in the bottom of the food chain in the ocean’s
ecosystem.
⑤
WildAid and the WWF are
environmental protection groups in
China.
⑥
Shark’s
fins are good for health.
(2) Complete the fact sheet in 3a.
Where shark fin soup is popular
Number of sharks caught and traded
every year
How government can help
Two environmental groups which are
against
“finning”
V. Practice (3b)
(1) Read
the passage and fill in the blanks with the words
in the box.
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