2C Unit 4 The Vilain in the Atmosphere
《高中英语》（上外版）选择性必修三 第四单元 第 2 课时 学案（教师版）
I. Warm-up
Interactive Task 1: Review the main idea and organization of Reading A. Q1:What is the theme of the text
The writer describes the functions of small quality of carbon dioxide, harmful effects of carbon dioxide, and the causes of these consequences to make the public aware of the serious results of global warming.
Q2: What is the organization of the text
II. Language Focus
Interactive Task 2: Review and analyse the functions of small quantity of carbon dioxide in Para. 2-3 .
Q1: Can you identity the connector that links the two functions of carbon dioxide in Para. 2-3
What’s more.
1) what’s more
to add more information that emphasizes what you are saying 更为甚者：更为重要的是
空气中少量的二氧化碳对我们没有害处，更为重要的是它对生命很重要。(what’s more)
A small quality of carbon dioxide in the air does us no harm, and what’s more it is essential to life.
Q2: How do plants produce “food”
Plants absorb carbon dioxide and convert it into their own tissue, which serve as the basic food supply for all
1 / 6
2C Unit 4 The Vilain in the Atmosphere
of animal life (including human beings, of course).
2) absorb / b s :b / vt.
to take in liquid, gas, or another substancefrom the surface or space around something 吸收（液体、气体等） absorb heat/carbon dioxide/water/knowledge
sb. be absorbed in one’s work
absorption / b s : p n / noun absorbent / b s : b nt / adjective
Choose the word and phrases mentioned above and fill in the blanks in proper forms.
1. The scientists their work on plants ’ of carbon dioxide.
2. To sell recognized that these qualities might make it useful as an material for removing
carbon dioxide.
1. are absorbed in ; absorption 2. absorbent
Q3: Could you list the words and expressions related to the function of CO2 in Para. 2-3
(
do
no
harm
)Be converted into their own tissue
functions
be absorbed by plants
serve as the basic food
release oxygen
Interactive Task 3: Review and analyse the harmful effects of CO2 in Para. 4-6.
Q1: Why is this apparently harmless and certainly essential gas harmful to us
The sea level is rising very slowly and in all likelihood , it will continue to rise and do so at a greater rate in the course of the next hundred years.
3) likelihood / la klih d/
n. the chance of sth happening; how likely sth is to happen 可能； 可能性 adj. & adv. likely sb./sth. be likely to do sth.
It’s likely that...
e.g. In all likelihood, the sea level will continue to rise and do so at a greater rate in the course of the next hundred years.
= The sea level will be likely to continue to rise and do so at a greater rate in the course of the next hundred years.
2 / 6
2C Unit 4 The Vilain in the Atmosphere
= _It’s likely that_the sea level will continue to rise and do so at a greater rate in the course of the next hundred years.
随着海平面的每年上升，许多城市很可能被淹没，引起了世界上很多耕地丢失。
As the sea level is rising from year to year, in all likelihood , many cities will be drowned, causing much of the most farming land of the world to be lost.
As the sea level is rising from year to year, many cities are likely to be drowned, causing much of the most farming land of the world to be lost.
As the sea level is rising from year to year, it’s likely that many cities will be drowned , causing much of the most farming land of the world to be lost.
Q2: Could you list the words and expressions related to the harmful effects of CO2 in Para. 4-6
starvation will be widespread
sea level is rising
food supply drops
(
effects
)the sea continues to rise at a greater rate in all likelihood
farming land will be lost
the sea is splashing against the
many cities will be drowned windows
Interactive Task 4: Review and analyse the causes of consequences of CO2 in Para. 7-11.
Q1: What does the greenhouse effect mean
It means an increase in the concentration of carbon dioxide in the atmosphere that leads to an increase in the planet’s average temperature.
4) concentration / k ns n tre n /
n. the amount of a substance contained in a liquid or in another substance 浓度；含量
n. the ability to direct all your effort and attention on one thing, without thinking of other things 专心； 专注 vt. concentrate 集中于； 专注
concentrate one’s efforts/attention/energy/mind etc on something 全神贯注于；集中于
在这节课上，生物老师将着重讲温室效应是怎样形成的。(concentrate)
In this class, the biology class shall concentrate (his attention) on how the greenhouse effect comes about.
随着温室气体浓度的下降，地球开始再次变冷，最终又将回到冰河时代。( concentration )
3 / 6
2C Unit 4 The Vilain in the Atmosphere
Gradually as the concentration of greenhouse gases goes down, Earth starts to cool again, and eventually you slip back into an Ice Age.
Human beings need powers of concentration to stop the concentration of carbon dioxide from moving upwards to avoid the greenhouse effect.
为了避免温室效应，人类必须集中精力阻止二氧化碳的浓度上升。
Q2: What is it that demonstrates the villainy of carbon dioxide
It is the melting of the ice caps that demonstrates the villainy of carbon dioxide.
5) demonstrate / dem nstre t /
v. to show sth clearly by giving proof or evidence 证明；证实；论证；说明 ~ sth (to sb)
~ that /how/what/why etc n. demonstration
这些结果有力地证明， 空气中的坏人是二氧化碳 。 (demonstrate)
These results demonstrate convincingly that the villain in the atmosphere is carbon dioxide.
冰盖的融化清楚的说明了全球的气候变暖 。(demonstration)
The melting of the ice caps is a clear demonstration of global warming.
Q3: Could you list the words and expressons related to the causes of these consequences in Para.7-11
demonstrate the villainy of CO2
4 / 6
the glaciers will retreat,the Polar ice caps will melt
make up only 0.0316 percent
begin with sunlight
(
causes
)radiate heat in the form of
infrared radiation
concentration of CO2 goes
(
the villainy comes
in
)up steadily
Interactive Task 5: List the topic-related words and expressions.
The Villain in the Atmosphere
1. Functions of carbon dioxide 2. Harmful effects of carbon dioxide 3. Causes of these consequences
2C Unit 4 The Vilain in the Atmosphere
do no harm, be absorbed by plants, release oxygen, serve as the basic food, be converted into their own tissue ... sea level is rising, in all likelihood, it continues to rise at a greater rate, splash against the windows, many cities will be drowned, farming land will be lost, food supply drops, starvation will be widespread, ... begin with sunlight, radiate heat in the form of infrared radiation, concentration of CO2 goes up steadily, the villainy comes in, make up only 0.0316 percent the glaciers will retreat, the Polar ice caps will melt, demonstrate the villainy of CO2, ...
III. Language application
Interactive Task 6:
Fill in the blanks with the appropriate forms of the given words and expressions to complete the dialogue.
Note that there are two more options than you need.
widespreadatmosphereestimatequantityreleasedo harm toat a rate ofcome aboutabsorbconcentration
A: Do you know anything about carbon dioxide
B: Carbon dioxide is a gas. We breathe in oxygen and breathe out carbon dioxide. And plants 1 carbon
dioxide.
A: So carbon dioxide is not really harmful
B: Well, carbon dioxide itself does not 2 the environment, but the 3 of it in the atmosphere
causes the “greenhouse effect.”
A: What is the “greenhouse effect”
B: It is the process by which radiation from the sun is blocked by the greenhouse gases and not reflected back into
space. The 4 retains more heat than necessary.
A: How does that 5
B: In the last few centuries, coal, oil and natural gas have been burned for energy at a rapidly increasing rate. The
carbon contained in these fuels is being 6 in the form of carbon dioxide and poured into the
atmosphere.
A: And the forests, once 7 , have been disappearing rapidly in the last couple of centuries.
B: Exactly. It is 8 that tropical forests are now disappearing 9 about 13 million hectares per
year.
A: I see. The burning of fuel adds more carbon dioxide to the atmosphere, and as the forests disappear, less carbon
5 / 6
2C Unit 4 The Vilain in the Atmosphere
dioxide is being removed by plants.
B: As a result, the 10 of the carbon dioxide in the atmosphere is going up year by year.
1. absorb 2. do harm to 3. concentration 4. atmosphere 5. come about
6. released 7. widespread 8. estimated 9. at a rate of 10.quantity
Interactive Task 7: Group discussion
Question: what aspects of your daily life have been affected by the global warming
Requirements:
a. introduce the effects of the global warming. b. explain possible causes in a logical way.
c. use as many words and expressions learnt in the text as possible.
IV. Homework
1. Complete Ex II on P55-P56;
2. Write a short passage (at least 100 words) on “what aspects of your daily life have been affected by the global warming ”
Requirements:
a. introduce the effects of the global warming. b. explain possible causes in a logical way.
c. use as many words and expressions learnt in the text as possible.
6 / 62C Unit 4 The Vilain in the Atmosphere
《高中英语》（上外版）选择性必修三 第四单元 第 2 课时 学案（学生版）
I. Warm-up
Interactive Task 1: Review the main idea and organization of Reading A. Q1:What is the theme of the text
Q2: What is the organization of the text
II. Language Focus
Interactive Task 2: Review and analyse the functions of small quantity of carbon dioxide in Para. 2-3 .
Q1: Can you identity the connector that links the two functions of carbon dioxide in Para. 2-3
1) what’s more
to add more information that emphasizes what you are saying 更为甚者：更为重要的是
空气中少量的二氧化碳对我们没有害处，更为重要的是它对生命很重要。(what’s more)
Q2: How do plants produce “food”
_______________________________________________________________________________________
2) absorb / b s :b / vt.
to take in liquid, gas, or another substancefrom the surface or space around something 吸收（液体、气体等） absorb heat/carbon diovide/water/knowledge
sb. be absorbed in one’s work
absorption / b s : p n / noun absorbent / b s : b nt / adjective
Choose the word and phrases mentioned above and fill in the blanks in proper forms.
1. The scientists their work on plants ’ of carbon dioxide.
2. To sell recognized that these qualities might make it useful as an material for removing
carbon dioxide.
Q3: Could you list the words and expressions related to the function of CO2 in Para. 2-3
functions
2C Unit 4 The Vilain in the Atmosphere
Interactive Task 3: Review and analyse the harmful effects of CO2 in Para. 4-6.
Q1: Why is this apparently harmless and certainly essential gas harmful to us
3) likelihood / la klih d/
n. the chance of sth happening; how likely sth is to happen 可能； 可能性 adj. & adv. likely sb./sth. be likely to do sth.
It’s likely that...
e.g. In all likelihood, the sea level will continue to rise and do so at a greater rate in the course of the next hundred years.
= The sea level will continue to rise and do so at a greater rate in the course of the next hundred
years.
= the sea level will continue to rise and do so at a greater rate in the course of the next hundred
years.
随着海平面的每年上升，许多城市很可能被淹没，引起了世界上很多耕地丢失。
As the sea level is rising from year to year, , many cities will be drowned, causing much of the
most farming land of the world to be lost.
As the sea level is rising from year to year, many cities be drowned, causing much of the
most farming land of the world to be lost.
As the sea level is rising from year to year, many cities will be drowned, causing much of the
most farming land of the world to be lost.
Q2: Could you list the words and expressions related to the harmful effects of CO2 in Para. 4-6
effects
2 / 5
2C Unit 4 The Vilain in the Atmosphere
Interactive Task 4: Review and analyse the causes of consequences of CO2 in Para.7-11.
Q1: What does the greenhouse effect mean
4) concentration / k ns n tre n /
n. the amount of a substance contained in a liquid or in another substance 浓度；含量
n. the ability to direct all your effort and attention on one thing, without thinking of other things 专心； 专注 vt. concentrate 集中于； 专注
concentrate one’s efforts/attention/energy/mind etc on something 全神贯注于；集中于
在这节课上，生物老师将着重讲温室效应是怎样形成的。(concentrate)
随着温室气体浓度的下降，地球开始再次变冷，最终又将回到冰河时代。( concentration )
, Earth starts to cool again, and eventually you slip
back into an Ice Age.
Human beings need powers of concentration to stop the concentration of carbon dioxide from moving upwards to avoid the greenhouse effect.
英译中：
Q2: What is it that demonstrates the villainy of carbon dioxide
5) demonstrate / dem nstre t /
v. to show sth clearly by giving proof or evidence 证明；证实；论证；说明 ~ sth (to sb)
~ that /how/what/why etc n. demonstration
这些结果有力地证明， 空气中的坏人是二氧化碳 。 (demonstrate)
____________________________________________________________________________________________
冰盖的融化清楚的说明了全球的气候变暖 。(demonstration)
The melting of the ice caps is .
Q3: Could you list the words and expressions related to the causes of these consequences in Para.7-11
(
、
)
causes 一
3 / 5
2C Unit 4 The Vilain in the Atmosphere
Interactive Task 5: List the topic-related words and expressions.
The Villain in the Atmosphere
1. Functions of carbon dioxide 2. Harmful effects of carbon dioxide 3. Causes of these consequences
..
III. Language application
Interactive Task 6:
Fill in the blanks with the appropriate forms of the given words and expressions to complete the dialogue.
Note that there are two more options than you need.
widespreadatmosphereestimatequantityreleasedo harm toat a rate ofcome aboutabsorbconcentration
A: Do you know anything about carbon dioxide
B: Carbon dioxide is a gas. We breathe in oxygen and breathe out carbon dioxide. And plants 1 carbon
dioxide.
A: So carbon dioxide is not really harmful
B: Well, carbon dioxide itself does not 2 the environment, but the 3 of it in the atmosphere
causes the “greenhouse effect.”
A: What is the “greenhouse effect”
B: It is the process by which radiation from the sun is blocked by the greenhouse gases and not reflected back into
space. The 4 retains more heat than necessary.
A: How does that 5
B: In the last few centuries, coal, oil and natural gas have been burned for energy at a rapidly increasing rate. The
carbon contained in these fuels is being 6 in the form of carbon dioxide and poured into the
4 / 5
2C Unit 4 The Vilain in the Atmosphere
atmosphere.
A: And the forests, once 7 , have been disappearing rapidly in the last couple of centuries.
B: Exactly. It is 8 that tropical forests are now disappearing 9 about 13 million hectares per
year.
A: I see. The burning of fuel adds more carbon dioxide to the atmosphere, and as the forests disappear, less carbon dioxide is being removed by plants.
B: As a result, the 10 of the carbon dioxide in the atmosphere is going up year by year.
Interactive Task 7: Group discussion
Question: what aspects of your daily life have been affected by the global warming
Requirements:
a. introduce the effects of the global warming. b. explain possible causes in a logical way.
c. use as many words and expressions learnt in the text as possible.
IV. Homework
1. Complete Ex II on P55-P56;
2. Write a short passage (at least 100 words) on “what aspects of your daily life have been affected by the global warming ”
Requirements:
a. introduce the effects of the global warming. b. explain possible causes in a logical way.
c. use as many words and expressions learnt in the text as possible.
5 / 5
