Transcript The Villain in the Atmosphere Unit 5 Text

Text
Unit 5
The Villain in the Atmosphere
Isaac Asimov
There is one gas present in the air we breathe that is
essential to life. …
The Villain in the Atmosphere
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Useful expressions
Text interpretation
Word family
Sentence structure
Translation
Reading skill
Guided writing
Homework
Useful expressions
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破坏友谊
香精油
皈依伊斯兰教
面纸，化妆纸
表面优势
沿海城市
一小部分
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Poison friendship
Essential oil
Convert to Islam
Facial tissue
Apparent advantage
Coastal cities
A fraction of
Useful expressions
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平稳增长
内陆国家
有失尊严/身份
流行病
处于压力下
社会关系
油箱
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Steady increase
Inland country
… one’s dignity
A … disease
Under pressure
Social connections
Gas tanks
Useful expressions
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透明皂
独特风味
蔓延植物
不利因素
(火)吞噬房屋
从…角度
替代能源
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Transparent soaps
A distinct flavor
A creeping plant
Adverse factors
 Consume houses
 From the … of
 Alternative energy
Text interpretation
 Warm-up questions
1. Have you ever noticed any weather changes
where you live?
2. Do you have any idea of the greenhouse
effect? What is the cause? What is the effect?
What is a way out?
3. Background Information外教社课件
Text interpretation
 Answer the questions
Ⅱ Comprehension on p.106
 What type is the text, generally?
A. narration
B. exposition
C. description
D. argumentation
记叙文
说明文
描述文
议论文
Text interpretation
 What is the main idea/topic of the text?
It explains the green house effect.
 The text is mainly in the
pattern.
A. general-specific
总分
B. problem-solution 问题-解决
因果
C. cause-effect
Text interpretation
 Try to pick up those words or sentences that
serve as links between paragraphs or parts of
the text.
 2 it 3 what’s more 4 but here 6 eventually 7 not
only…but 8 and all because of 9 it begins with
10 however 12 this means 14 but why 15 to
blame 16 to make matters worse 17 whatever
replaces 18 but this 19 what is to be done 20
first 21 second
Text interpretation
 Part division
Parts Paras
Main Ideas
1
1-7
CO2 doesn’t seem to be but is a villain.
2
8-13
CO2 keeps us warm but its continued
concentration is disastrous.
3
14-18
4
Why is the concentration of CO2 steadily
rising?
19-21 What is to be done?
Text interpretation
 What can we individuals do to reduce
and stop the greenhouse effect?
Your answers:
1.
2.
3.
Text interpretation
Picture talk ①
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②
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Text interpretation
1. Ill air slays sooner than the sword.
污浊的空气杀人比刀还要快。
2. Exercise, temperance, fresh air, and needful rest are
the best of all physicians.
锻炼、节制、新鲜空气和必要的休息是最好的医生。
3. Fire and water are good servants, but bad
masters.
水火是忠仆，造灾成元凶。
Text interpretation
1. Plants covert it into their own tissue, which serve as
the basic food supply…
2. In all likelihood, it will continue to rise and do so at
a greater rate…
3. Where there are…, the water will advance steadily,
forcing people to …
4. Florida will disappear beneath the waves, as will
much of the British Isles…
5. And all because of carbon dioxide.
6. It begins with the sunlight, to which …
Text interpretation
7. Sunlight, striking the top of the atmosphere…
8. …the Earth cools by radiating heat into space in the
form of infrared radiation.
9. …the atmosphere is not quite as transparent to
infrared radiation as it is to visible light.
10. Carbon dioxide in particular tends to block such
radiation.
11. Less heat is lost…than would be lost if carbon
dioxide were not present in the atmosphere.
12. Without the small quantity of that gas present, the
Earth would be distinctly cooler…
Text interpretation
13. …that is where the villainy comes in.
14. Each year since, the concentration has crept upward
and it now stands at …
15. It is estimated that by 2020 the concentration will
be nearly twice what it is now.
16. Something like 90 percent of the ice…
17. To blame are two factors.
18. …new sources of fuel that do not involve the
production of carbon dioxide.
Word family
 Bad egg, wicked, toxin, inessential, essence,
conversion, exchange, substance, release, seeming,
self-evident, hidden, latent, possibility, high land,
proportion, portion, unsteady, instable, outland, spill,
epidemic, fashionable, structural, fall down, stress,
gasoline, radiant, ultraviolet, invisible, visibility,
extension, distinctive, crawl, calculate, square meter,
displace, placement, bushes, consumer, nucleus,
exterior, lunar, competent, militant, etc.
 More words on pp 109-11
Sentence structure
1. Florida will disappear beneath the waves, as
will much of the British Isles, the crowded Nile
valley, and the low-lying areas of China, India,
and Russia.
2. It is estimated that by 2020 the concentration
will be nearly twice what it is now.
Do the exercises on pp 112-3
Translation
1.
If the rich countries spent more money on green
industries, instead of on building military machines
and nuclear weapons, many of today’s widespread
pollution problems would gradually disappear.
2.
The burning of coal not only consumes the oxygen in
the house but also gives out poisonous gases.
3.
Apparently, finding alternative energy sources is
essential to the steady development of our economy.
4.
Solar cells can absorb sunlight and convert it into
electricity.
Translation
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If the temperature on the Earth continues to go up
from year to year, the polar ice caps will begin to
melt and, in all likelihood, half of the buildings in
coastal cities will disappear beneath splashing sea
waves.
Because these creatures are small and tend to hide
beneath leafy plants, they are not always visible to
the naked eye.
As a result of exposure to atomic radiation, he finally
collapsed at work.
There is distinct evidence of the connection between
heavy pressure of work and some disorders of the
body.
Reading Skill
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Looking for the thesis statement
A thesis statement is a single sentence that states the
central idea of an essay and conveys the writer’s
attitude or purpose. Some writers include a thesis
statement in introduction; others prefer to omit this
explicit statement and just to give a general sense of
the topic or thesis.
(p. 116, Book 2)
Guided writing
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Paragraph Writing
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A paragraph is a set of sentences, all dealing with the
same general idea and linked together in a smooth
sequence. The sentences that support and expand the
topic may include facts, examples, illustrations,
definitions, and explanations. The progression from one
sentence to the next is clearer to read if the writer
carefully includes transitions.
外教社PPT
Recitation & Retelling
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What is the green-house effect? How does it
work?
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Do you agree that CO2 is a villain?
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Recitation
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Retelling
Homework
 Other exercises
 Recitation
 Passage
 Fast reading
 Review
 Preview
 Recitation
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