【备课参考】人教版高中英语选修6课件：Unit 4 A Global warming Using language（共80张PPT）

课件80张PPT。Unit 4
Global warming
Using languageWhat cause the Global Warming?smoke from carssmoke from factories目前面临的环境问题Water pollutionDeforestationThe warWhat can we do
about global warmingSkim the letters and find who the
writers are and what their purpose
of writing the letters is. SkimmingThe first letter is written by a student who is asking for suggestions for his project — global warming.
The second letter is written by an editor of Earth Care magazine. He offers the student some suggestions on what to do about global warming. Read the second email, and answer the
question:
Does Earth Care agree with Ouyang
Guang’s opinion that individuals can
have no effect?No, Earth Care does not agree.List Earth Care’s suggestions and then in groups, discuss whether you think you can carry out each suggestion. ScanningIf you are not using electrical appliances, turn them off.YesSave
energyYesSave
energyYesSave
energyYesSave
energyIf you’re cold, put on more clothes instead of turning up the heat.Motor vehicles use a lot of energy, so walk or ride a bike if you can.Recycle cans, bottles, plastics and newspapers and buy things made from recycled materials.YesSave
energyYesPlants absorb carbon dioxide from the air.Plant more trees.Get your parents or friends to buy products that are made to save energy.YesTogether, individuals can make a difference.Talk with your family and friends about global warming and tell them what you’ve learned.Read the text carefully and fill in the blanks.What can we do about global warming?
◆ Turn a(n) _________________ off
when you’re not using it.
◆ Put on more clothes instead of turning
up the _______.
◆ Walk or ____________ instead of
taking motor vehicles.
◆ ________ cans, bottles, plastics and
newspapers.electrical applianceheatride a bikeRecycle◆ Buy things made from _________
__________.
◆ Buy products that are made to save
________.
◆ __________ in your garden or your
school yard.
◆ Talk with your family and friends
about _______________.materialsenergyPlant treesglobal warmingrecycledWriting—Make a posterMake a poster for your school that tells
students various ways they can reduce
the amount of carbon dioxide in the air.The steps to write the posterUnderline the most important parts of
earth care's suggestions.
List the ways to reduce carbon dioxide in
the air.
Use imperative sentences (祈使句) in your
poster.
Give your poster a large heading.
Make a slogan at the end like the one at
the end of the letter from Earth Care.Sample posterFight global warming
Cut down on energy. Cut down on carbon dioxide.
If not using an electrical item, turn it off.
If you suddenly feel cold, don’t turn the
heat up, put on a jacket instead.Walk or ride a bike and save fossil fuels.
Recycle paper, cardboard and newspapers.
Buy products made from recycled materials.
Buy energy-saving products like low energy
light bulbs.
Plant trees to absorb CO2.
Tell your friends about global warming.
Every effort counts!Further discussion:From your point of view, which
of the following activities will
harm our earth the most? Why?
How to solve it?Anuclear bomb 核弹
gas bomb 毒气弹
radiation 辐射
chemical weapons
化学武器
ban the war
peaceBharmful gas
acid rain 硫酸雨
reduce air pollution
solar energy
太阳能
wind power
hydropower
水力发电CCO2 floods
draughts
only-once
chopsticks
一次性筷子
paper
handkerchief
纸巾pollute
earth surface
terrible smell
reduce
reuse
recycleD on behalf of sb. 表示“代表某人”, 通常在
句中作状语, 如：
On behalf of my colleagues and myself
I, thank you.
我代表我的同事和我本人向你表示感谢。
用法归纳: on behalf of sb.
as the representative of …
on sb’s behalf
联想拓展: representative?? n. 代表
Mary is a workers’ representative on the
Board. 玛丽是理事会的工人代表。Language Points2. advocate 用作动词, 表示“拥护、提倡”时,
后接名词或动名词形式, 如:
He advocates reforming the prison system.
他主张改良监狱制度。
用法归纳:
advocate sth.?? 提倡, 拥护某事
advocate doing sth.?? 提倡, 拥护做某事
advocate that + 从句??? 主张, 提倡……
特别提示:
advocate 后接从句时, 从句谓语需用
“should do”表示虚拟, should可以省略。3. commitment n. 表示“承诺, 保证”, 常用在
短语make a commitment to sb. / sth.中,
指“对某人/某事做出承诺” 如：
Our company has a commitment to quality
and customer service.
我们公司对质量和顾客服务有承诺。联想拓展: commit?? v.
1) 使承担义务; 使作出保证; 使表态
He didn’t commit himself to anything.
他没有作任何承诺。
2) 做 (不合法的、错的或愚蠢的事); 犯
commit murder, theft, a blunder,
an unforgivable error, etc.
犯凶杀、自杀、偷窃、大错、不可原谅
的错误等。
commit suicide? 自杀4. put up with 忍受; 忍耐; 受苦
That woman, as a housewife, has a lot to put up
with. 作为家庭主妇, 那女人得忍受很多烦恼。
知识拓展:
put aside 节省(钱、时间); 储蓄;
把……放在一边
put away 收拾起来; 储存(钱); 喝掉
put back 放回原处; 拖延
put down 写下; 记下; 控制
put forward 提出(意见、建议); 推荐
put off 延期; 推迟
put on 假装; 增加; 上演(戏剧) put out 熄灭; 使忧虑; 扑灭; 出版
put up 举起; 张开(伞); 张贴; 为……提供食宿
5. so long as =as long as 只要, 如果
As long as there is life, there is hope.
留得生命在, 不怕没希望.
在用as /so long as连接的从句中，当其谓语为be,
而主语和主句的主语相同时, 则从句的主语和
be可以省略。如:
I'm sure we are safe as long as (we are) in
his care.
我深信只要在他的保护下, 我们就会平安无事。You can go out on condition that you
wear an overcoat.
= You can go out _________ you wear
an overcoat. as long as只要你开心, 你做什么都没关系。As long as you are happy, it doesn’t matter what you do.根据句意及所给单词的首字母或汉语
提示, 写出各单词的正确形式。
1. You’ll need three large c____ of paint.
3. I got out of the car but left the m____
running.
4. They decided to set up a(n) _______
(核的) power station.
5. I’ll heat it up in the _________(微波炉).ansotor nuclearmicrowaveII. 用所给词的适当形式填空。
1. There was _____________ (disagree) among doctors about the best way to treat the disease.
2. _________ (pollute) from cars is the main cause of global warming.disagreementPollutionIII. 根据提示将下列句子补充完整。
If she could _______________________
_______ (忍受那里的条件), we would
take her with us.
2. I don’t mind your knowing it
__________________________
(只要事情不进一步发展).
3. If you want to save energy, you’d better
not use the air conditioner, the heater
_________ (等等) when it is not necessary. put up with the conditions
thereso long as it goes no furtherand so on4. I realized that she was right — and
it _________________ (有影响).
made a differenceIV. Choose the best answers.1. ---I will not come here tomorrow.
--- ______ to me, because I don’t care.
A. It doesn’t make any difference
B. It makes much difference
C. It doesn’t make no difference
D. It makes a differenceA 2. You can go out, _______ you promise
to be back before 11 o’clock.
A. as far as B. so far as
C. when D. as/so long as
3. She will have to find some other work
for she can’t ___ this loud noise any more.
A. come up with B. keep up with
C. grow up with D. put up withDD4. _______the department I would like to
thank you all.
A. Instead of B. In spite of
C. On behalf of D. Due to
5. He made a great ______ to the success
of the project.
A. progress B. effect
C. contribution D. attitudeCCListening and Speaking1 Listen to part 1 and decide which
statements Professor Keeling does
NOT agree with.
1. We should stop depending on fossil
fuels for our energy.
2. 90% of our energy comes from
fossil fuels.3. We can replace fossil fuels with
cleaner sources of energy.
4. Nuclear power is a good source
of energy.2 Listen to Part 1 again and tick the energy sources that are mentioned. Complete the notes on them.Produce carbon dioxide
cheap and concentrated form of energyclean
not very practical with present technologydoes not produce carbon dioxide
dangerousclean
not practical: need huge areas of land to provide enough energy3 Listen to Part 2 and the list three things we can do to save energy.First we must try to find ways of using fossil fuels that does not put carbon dioxide into the air.
Second we must produce products that are economical with energy.
Third we must ask people to cut
down on the energy they use.4 Listen to part 2 again and fill in the blanks.LI BIN: …What about ________? They don’t cut down on their use of ______.energyfactoriesKEELING: No, they don’t. However, that is a ________ we must work on as a _______ community. That means _________ and __________　countries will have to work together.problemglobaldevelopeddevelopingLI BIN: But it’s not the __________
countries that put most of the
carbon _______ into the air.
The developed countries are
really the ones to ______.
developingdioxideblame FOSSIL FUELS AND OTHER
FORMS OF ENERGY
(L = Li Bin K = Keeling)
Li Bin, a university student, is interviewing Professor Keeling on the local student radio station about the use of fossil fuels and other sources of energy.Part 1
L: Professor Keeling, I’ve read that we
must stop using fossil fuels if we want
to reduce the amount of carbon
dioxide in the air.
K: Yes, that’s right, Li Bin. However
it’s difficult. Our modern industrial societies depend
on the energy we get from fossil fuels.
It’s a very cheap and concentrated form
of energy.
L: Is it true that about 90% of
the world’s energy comes from fossil
fuels?
K: Yes, that’s correct. And there
is enough to last for centuries.L: Could we replace fossil fuels with
clear sources of energy like sun or
wind power?
K: I’m afraid not. We just can’t produce
enough. You need huge areas of land to
produce enough wind energy. The
technology we have at present cannot
provide enough sun energy. L: So what about nuclear power?
That doesn’t produce carbon dioxidea?
K: True, but it’s very dangerous.
Remember the accident at Chernobyl.
People are still dying of the radiation
that was produced by THAT disaster! Part 2
L: So what CAN we do?
K: Well, there are three things. First we
must find ways of using fossil fuels that
won’t put carbon dioxide into the air.
Second, we must produce products that
are economical with energy. Third, we
must ask people to cut down on the
energy they use.L: But that’s on a personal level. What
about factories? They don’t cut down cut
down their use of energy.
K: No, they don’t. However, that is a
problem we must work on as a global
community. That means developed and
developing countries will have to work
together.L: But it’s not the developing countries
that put most of the carbon dioxide into
the air. The developed countries are
really the ones to blame.
K: That’s true. So we must work
together because global warming will
affect everyone. If we want the future
generations to have a good life, we must
ALL look after the planet.Note: The USA is the largest energy user
in the world and the largest producer of
the greenhouse gas carbon dioxide.
China comes second in both of these. China has been going through huge economic development, and has had as much growth in one decade as the industrial world experienced in nearly a century. However, it has been at a high cost to the environment.AGREEMENT
Exactly.
That’s true. You’re right. That’s right. That’s correct.
I agree. DISAGREEMENT
I’m afraid I disagree with you.
I’m afraid not.
No, I don’t agree.
I don’t think so.
No way.
I doubt ... Discussion Professor Keeling: Whatever we do,
we have to do it as a global community.
That means developed and developing
countries will have to work together.
Li Bin: But it’s not the developing
countries who put most of the carbon
dioxide into the air. The developed
countries are really the ones to blame. S1: I agree with Li Bin. It is the
developed countries that are really
the ones to blame and to pay for that.
S2: Well, I don’t think so. I think
Professor Keeling is right. Whatever
we do, we have to do it as a global
community. Developed and developing
countries should work together to
improve the environment.Sample DialogueS3: I hold the same viewpoint as Li
Bin. In developed countries people are
producing a large amount of carbon
dioxide, which contributes to global
warming. Isn’t it their duty to do
something to decrease the speed of
global warming?
S1: Exactly.S2: It is true that the developed countries
are the ones to blame and they should
do something. But is it right for
developing countries to look on without
doing anything? Remember we have
only one earth, which is like a big family.
All of us are family members. Think
about this: in a family, if one child
makes a mistake, what should his brothers or sisters do—
blame him without doing anything or
help him correct the mistake?
S1: I see. We should take part in the
action instead of looking on and
complaining.
S3: I agree, too. Thank you. I’ve got a
better understanding about this.Homework Write short passage to give some advice on how we can do to solve the problem of global warming. Help me, help you, help everyone.
Return GREEN to the earth!Help me, help you, help everyone.
Return GREEN to
the earth!windmillshydropowersolar energyThank You!