-
Unit 13
We
’
re trying to save the
earth!Section A
Period 1
Section A 1a-2d
◆
教材分析
本单元带领学生了解一些有关地球污染，动物濒危等问题。并且教会大家如何保护濒危动
物，如何通
过回收再利用等方式来保护地球。本单元主要复习语法内容为：情态动词和动
词形式变化，主要带领学生
进行语法复习，巩固语法知识。
◆
教学目标
【知识与能力目标】
1.
掌握重点单词及短语。
2.
复习语法：
能正确区分和使用以下语法结构
：
现在进行时，
现在完成时，
被动语态
，
情态动词和
used
to
句型。
【过程与方法目标】
本课主要采用任
务型教学法，情景教学法以及多媒体辅助教学，充分发挥教师的主导作用和学生的主
体地
位。利用现代化教育技术优化教学过程，通过课件为学生创设更多生动活泼的语言环境，把学生吸引
到活动中去，并激发他们主动参与学习的欲望，努力培养学生自主学习的能力。
【情感态度价值观目标】
通过学习具有环境危机意识，学会关注环境保护环境。
【教学重点】
（
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
< br>used to
句型。
（<
/p>
2
）保护环境的措施方法。
【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。
◆
教学重难点
◆
课前准备
1.
准备录音机和磁带；
2.
设计课后巩固练习；
3.
ppt
；
◆
教学过程
Step 1.
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.
Learn some new words.
Step 2. Work on 1a
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
____________ ___________
_____________
____________
___________ _____________
____________ ___________
_____________
____________
___________ _____________
Step 3.
Listening
1. Work on1b. 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 problem?
People are throwing _______ into the
river.
Factories are putting ______
into the river.
How should the problem
be solved?
We should write to the
____________ and ask
them
to ___________ the factories. Everyone
should help to __________ the river.
2. Listen again and answer the
following questions.
1)
What does Tony want to do later this
afternoon?
He wants to go swimming with
Mark in the river later this afternoon.
2) Why doesn’t Mark want to go with
Tony?
Because the river
was
really dirty. Even the bottom of
the river was full
of
rubbish, and
there were no
more fish for fishermen to catch.
3)
How was the river in the past?
It
used to be so clean. It has been the nicest river
in this town.
Step 4. 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 factories.
B: What else
can we do?
A: Everyone should help to
clean up the river.
Step 5. Language
points
1. We’re trying to save the
earth! 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.
We’ll
try
to
finish the work in a week.
我们将努力在一周内完成这项工作。
2. Here are some words related to
different kinds of pollution.
be
related to
与…有关
the driver relate to the accident?
司机和这起事故有关吗？
3.
.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。
Step
6. Listening
1. Work on 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
2. Work on 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.
Step
7. Practice (Work on 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…
Step 8. Discussion
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.
Step 9.
Reading
1. Read 2d and complete the
chart.
Problems
Solving
problems
air pollution
waste pollution
wooden (
木头的
)
chopsticks or plastic forks
rubbish
2. 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
(
外卖食品
) food. 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!
Step 10.
Language points
1. 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.
王先生花了
200<
/p>
元买了新衬衫。
How
much does the new computer cost?
新电脑花了多少钱？
辨析
take, spend, pay & cost <
/p>
take
，
spend
< br>，
pay
和
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) spend
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 80 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.
2. So together, our actions
can make a difference and lead to a better future!
make a difference (to…)
表示
(
对……)产生影响或作用
e.g. Learning English well can make a
difference to your future.
学好英语会对你的前途有影响。
Step 11 Think about
The
earth is badly polluted. Please make a poster and
think of what we can do.
Step 12
Homework
1. Copy the new words and
remember them.
2. Read the listening
materials of 1b, 2a.
◆
教学反思
略
Period 2 Section A (3a-3c)
◆
教学目标
【知识与能力目标】
1.
掌握重点单词及短语。
2.
复习语法：能正确区分和使用以下语法结构：现在进行时，现在完成
时，被动语态，情态动词和
used
to
句型。
【过程与方法目标】
本课主要采用任
务型教学法，情景教学法以及多媒体辅助教学，充分发挥教师的主导作用和学生的主
体地
位。利用现代化教育技术优化教学过程，通过课件为学生创设更多生动活泼的语言环境，把学生吸引
到活动中去，并激发他们主动参与学习的欲望，努力培养学生自主学习的能力。
【情感态度价值观目标】
通过学习具有环境危机意识，学会关注环境保护环境。
【教学重点】
1)
掌握本部分出现的生词和词组，达到熟练运用的目标。
2)
阅读短文，获得相关的信息。通过阅读练习，来提高阅读能力。
【教学难点】
1)
阅读短文，获得相关的信息的能力。
2)
理解并运用所学的词汇及表达方式。
◆
课前准备
1.
准备录音机和磁带；
2.
设计课后巩固练习；
3.
ppt
；
◆
教学过程
Step 1.
Revision
Translation.
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。
Step 2. Warm- up
1. T: The earth is badly polluted. What
should we 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.
◆
教学重难点