Unit3Environmental Reading and Thinking课件（共46张，内嵌视频）选择性必修第三册 (2)

(共46张PPT)
UNIT 3
Environmental Protection
Earth provides enough to satisfy every man’s needs, but not every man’s greed.
— Mohandas K. Gandhi
地球能满足人类的需要，但满足不了人类的贪婪。
1. What can you see in the picture
2.What is the cause of this phenomenon
A large piece of ice breaking off a large glacier or ice sheet.
Global warming
Step 1. Lead-in
What consequences may global warming bring about
drought
flood
global warming
animals dying
fire
Glaciers melting
the rise of sea level
Dying animals
coastal cities submerged
natural disasters
extreme weather
economic losses
Reading and thinking
Climate Change Requires The World’s Attention
Learning objectives
1. Learn about global warming and its causes, effects and solutions;
2. Use mind map to analyze the main idea, structure and language features of an cause-effect expository essay;
3. Think about what might help deal with the problem of global warming, and provide possible solutions.
What is the graph about What information can you get from it
What`s the author‘s purpose of using the graph and the photo
Pre-reading
o
What information can we get from the graph
The graph shows the change in the Global Surface Temperature between 1920 and 2016.
Temperature Anomaly(n.异常)
The Global Surface temperature is abnormal and rising.
What can you see in the photo
What might be the story behind it
The polar bear (北极熊) may died for lacking food.
skin and bones
瘦得皮包骨
1. What's the type of this text
A. Essay （散文） B. Biography （传记）
C. Exposition（说明文） D. Argumentation（议论文）
2. What's its purpose
To inform readers to deal with climate change
To persuade readers to focus on limited resources
To tell readers some polar bears are dying of starvation.
To tell readers what the greenhouse effect is.
Skimming
3. In which part of a newspaper or magazine may we find this passage
Entertainment B. Economy
C. Education D. Environment
Skimming
While-reading
Part 1:
(para.1-2 )
Part 2:
(para. 3)
Part 3:
(para. 4)
Part 4:
(para. 5)
The evidence of dramatic climate change that had an impact on Earth’s ecology
The causes of the increase in the global average surface temperature
The consequences of the rise in temperature
The solutions to reducing greenhouse gas emissions
Match the main idea with each part.
Read for structure
Find out the topic sentence of each paragraph.
Paras.1&2
Para.3
Para.4
Para.5
problem
Paras.1&2
Para.3
Para.4
Para.5
cause
consequence
solutions
Para 1: Evidence
The ________ is getting warmer and warmer.
Evidence 1: ________________________________________
Evidence 2: ______________
Evidence 3: ___________________
Earth
a warming ocean and atmosphere
melting ice
rising sea levels
climate
change
Read for details
Para 2: An example of climate change
Time
Where
What happened
Why did it happen
2013
Norway’s Arctic Island of Svalbard.
A polar bear died of starvation.
The bear cannot hunt seals as before because low sea-ice levels.
Read for details
climate change
starvation
longer food-seeking travel
lack of food
low sea-ice level
The following reasons account for the death of the polar bear, with one influencing another. Read paragraph 2 and put them in a correct logical order.
What is the root cause
Para 2: Cause and effect
Read for details
Para3: cause
Greenhouse effect
Read for details
. greenhouse effect
man-made
. greenhouse effect
natural
keeping Earth’s climate ____________________
causing Earth’s surface temperature ___________
warm and habitable
to rise quickly
important
A big problem
Q1: Why is the “natural” greenhouse effect important and necessary
Q2: What are the consequences of high greenhouse gas emissions
natural
man-made
Definition
Heat from the sun enters the __________ and warms Earth’s ______ as _________-wave radiation.
Function
Keeping Earth’s warm and_____________
Definition
People produce huge amounts of_________ greenhouse gases by burning_____________.
A big problem
More _______ energy is trapped in the atmosphere and causes Earth’s surface tempreature to ________ quickly.
habitable
extra
fossil fuels
atmosphere
surface
short
heat
rise
Greenhouse Effect
P3.Then what is causing the increase in the global average surface temperature Climate scientists often mention a key climate process called the "greenhouse effect", which has two common meanings: the "natural" greenhouse effect and the "man-made" greenhouse effect. The "natural" greenhouse effect refers to the fact that heat from the sun enters the atmosphere and warms Earth's surface as short-wave radiation. The heat is released back into space at longer wave lengths. Greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat, keeping Earth's climate warm and habitable. Without this process, Earth could not sustain life. However, the "man-made" greenhouse effect has now become a big problem. When people produce huge amounts of extra greenhouse gases by burning fossil fuels, more heat energy is trapped in the atmosphere and causes Earth's surface temperature to rise quickly.
Draw a diagram describing how the greenhouse effect works.
Earth
D. Heat entered the atmosphere
B. Reflected sunlight
C. Heat reflected back to earth’ surface
A. Heat released back into space
D
B
C
A
Para 4 consequences
Q1. What are the consequences of the global temperature rise
Q2. Why did the author mention the climate scientists’ warning
The rise in the temperature
extreme weather & natural disasters
serious damage, costing human lives
extreme rainstorms, heatwaves
led to
results
examples
Because global warming needs everyone’s attention and it is essential that we take appropriate actions.
Read for details
P5.Continued greenhouse gas emissions will result in further warming and long-lasting changes to the global climate. This requires the attention of people all over the world. Governments need to consider making policies and taking appropriate actions and measures to reduce greenhouse gas emissions. We as individuals can also reduce our "carbon footprint" by restricting the amount of carbon dioxide our lifestyles produce. It is our responsibility to seize every opportunity to educate everyone about global warming, along with its causes and impacts, because this is the most serious issue affecting all of us on this planet. So what will you do to help
What are the solutions to the environmental problems
Para 5 Solutions
Read for details
solutions
　　As we know, Earth is getting warmer and warmer, (1)______ results in melting ice and rising sea levels. In 2013, a dead polar bear (2) _________(find) on Norway’s Arctic island of Svalbard. Experts said that it was low sea-ice levels (3)______(cause) by climate change(4)____ killed the polar bear. Scientists often mention that the “man-made” greenhouse effect is a big problem. (5)____ rise in temperature has led to an increase in extreme weather and natural disasters worldwide,(6)_______(cause) serious damage and costing human lives. The further global warming resulted(7)_____the continued greenhouse gas emissions(8)________(require) the attention of people all over the world. Governments need to make policies and take measures (9) ________(reduce) greenhouse gas emissions. As individuals, we should also reduce our “carbon footprint” by restricting the amount of carbon dioxide our (10)________(lifestyle) produce.
which
was found
caused
that
The
causing
from
Summary
requires
to reduce
lifestyles
Group discussion
As a student, what can we do to reduce our “carbon footprint”
1. Turn off the light, switch, pull the plug if don’t use.
2. Walk or cycle to school.
3. Recycle cans, bottles, plastic bags and so on.
4. Buy things made from recycled materials.
5. Plant more trees.
6. Talk with family and friends about global warming.
......
Earth provides enough to satisfy every man’s needs, but not every man’s greed.
— Mohandas K. Gandhi
地球能满足每个人的需要，但不能满足每个人的贪婪。
We should cherish what we have and do whatever we can to make the world a better place, leaving the green mountains and blue waters for our offsprings.
　　As we know, Earth is getting warmer and warmer, which results in a warm ocean and atmosphere,(1) and rising sea levels.(para.1) In 2013, a(2) was found on Norway’s Arctic island of Svalbard. Experts said that it was low sea-ice levels (3)______(cause) by climate change that killed the polar bear.(para.2) Scientists often mention that the “man-made” greenhouse effect is(4) . (para.3) The rise in temperature has led to an increase in(5) and natural disasters worldwide,(6)_______(cause) serious damage and costing human lives.(para.4) The continued greenhouse gas emissions will result in further global warming , which (7)________(require) the attention of people all over the world. Governments need to (8) and take measures to reduce greenhouse gas emissions. As individuals, we should also reduce our
(9) by restricting the amount of carbon dioxide our lifestyles produce. (para.5)
caused
causing
Post-reading
melting ice
dead polar bear
extreme weather
a big problem
requires
make policies
“carbon footprint”
In the recent years, China has made great achievements in environmental protection, but there is a long way to go. So you should design a poster with your partners to call on all people to take part in environmental protection action according to this passage.
Demands: clear theme; novel design
Homework
Para. 1
climate changes
There is little doubt that...
along with
provide evidence
a dramatic change
1.气候变化
2. 毫无疑问...
3. 和；连同
4. 提供证据
5. 一个巨大的变化
Para. 1
climate changes
There is little doubt that...
along with
provide evidence
a dramatic change
1.气候变化
2. 毫无疑问...
3. 和；连同
4. 提供证据
5. 一个巨大的变化
1. There is little doubt that Earth is getting warmer and warmer.
There is little doubt... 几乎没有疑问的是……
There is no doubt that... 毫无疑问的是……
There is some doubt whether... 对……值得怀疑
that引导同位语从句，解释说明doubt的具体内容
注意：doubt前有否定意义的词修饰时，其后的同位语从句由that引导；doubt前有肯定意义的词修饰时，其后的同位语从句由whether或if引导。
The “natural” greenhouse effect refers to the fact _____ heat from the sun enters the atmosphere and warms Earth’s surface as short-wave radiation. (P26 ~ P27)
that
同位语从句：大多由从属连词_____引导,常常跟在order, report, wish, decision, suggestion, belief, doubt, fact, hope, message, news等抽象名词的____，一般用来解释或说明这些名词的具体含义或内容。
that
后面
即学即用
1. They expressed the hope _______ they would come over to China soon.
2. Word has come _______ some American guests will come to our college for a visit next week.
3. He can’t answer the question _______ he got the money from his home yesterday.
4. Do you have any idea _______ is actually going on in the classroom
5. The problem ________ we should have the meeting in the hall now must be decided at once.
that
that
how
what
whether
2. A warming ocean and atmosphere along with melting ice and rising sea levels provide evidence of a dramatic change in the global climate. (P26)
句式分析
along with 连接前后两个主语时，谓语动词应和________那个主语保持一致，即“就远原则”。
前面的
海洋和大气变暖，以及冰层融化、海平面上升，都为全球气候急剧变化提供了依据。
1. A library with five thousand books _________ (offer) to the nation as a gift.
2. All but one _____ (be) here just now.
3. WeChat, as well as Ding Talk, __________ (play) an important part in daily communication nowadays.
is offered
were
is playing
即学即用
Para. 2
be shocked by
appear to do =seem to do
the alarming case
have an impact/effect/influence on…
1. 被...震惊
2. 似乎
3. 令人惊恐的案例
4.对...产生影响
3. According to the scientists who found its dead body, all that remained of the polar bear was “skin and bones”.
who引导的定语从句，修饰先行词scientists
that引导的定语从句，修饰先行词all, that不能用which代替
句意：根据发现北极熊尸体的科学家的说法，这只北极熊只剩下了“皮和骨头”。
【2018-北京】5. She and her family bicycle to work, _________ helps them keep fit.
【2018-天津】2. Kae, ________ sister I shared a room with when we were at college, has gone to work in Australia.
【2018-江苏】23. Self-driving is an area ________ China and the rest of the world are on the same starting line.
【2017·北京卷】31. The little problems ________ we meet in our daily lives may be inspirations for great inventions.
【2017·江苏】28. In 1963 the UN set up the World Food Programme, one of _________ purposes is to relieve worldwide starvation.
which
whose
where
whose
that
4. …the bear appeared to have starved and died.
本句中appear是系动词，to have starved and died是不定式作表语。starve这个动作发生在appear之前，所以用完成式的形式来表达。
starve v. (使)挨饿; 饿死
starve to death 饿死 be starved of/for 缺乏/急需……
They appear to do everything in a rush, with an eye on the clock, as if they had a short time to live.
The run of Ofo customers seeking refunds appears to have started last week.
【语境应用】翻译句子。
1) 那次饥荒 (famine) 中有许多人饿死了。
2) 那个可怜的孩子急需关注。
Many people starved to death because of the famine.
The poor kid is just starved for attention.
Para. 3
global average surface temperature
a key climate process
greenhouse effect
man-made
refer to (referred-referring )
as short-wave radiation
release...into...
keep earth’s climate warm and habitable
sustain life
huge amounts of
be trapped in
1. 全球平均表面温度
2. 一个关键气候过程
3. 温室效应
4. 人造的
5. 指的是
6. 以短波辐射的形式
7. 释放到
8. 地球温度保持温暖并适于居住
9. 维持生命
10. 大量的
11. 被困在
提及；谈到
refer to
1. His report refers to the situation in the Middle East.
2. The writer often refers to a dictionary.
3. The book referred to is not in the library.
5. The "natural" greenhouse effect refers to the fact that heat from the sun enters the atmosphere and warms Earth's surface as short-wave radiation.
参考；查阅
谈到；提到
同位语从句
Para. 4
strong and comprehensive evidence
extreme weather
natural disasters
cause damage
5.cost human lives
6. take appropriate action
7. the warming trend
8. frequently broadcast
9. extreme rainstorms and heatwaves
10. economic losses
1. 确凿且全面的证据
2. 极端天气
3. 自然灾害
4. 造成损害
5. 造成生命损失
6. 采取适当的行动
7. 变暖的趋势
8. 频繁地报道
9. 极端暴雨和热浪
10. 经济损失
6.There is strong and comprehensive evidence that the rise in the temperature has led to an increase in extreme weather natural disasters worldwide, not only causing serious damage, but also costing human lives.
句意：有充分和全面的证据表明，气温升高导致全球极端天气和自然灾害增加，不仅造成严重破坏，而且使人丧命。
同位语从句
现在分词短语作结果状语
Para. 5
Para. 5
result in=lead to=contribute to
result from=because of=due to=
2. consider making policies
3.restrict the amount of carbon dioxide
4. It is our responsibility to do
5. seize the opportunity to do
1. 导致，由...造成
由于
2. 考虑制定政策
3. 限制二氧化碳的量
4. 做...是我们的责任
5. 抓住机会做某事
7. We as individuals can also reduce our “carbon footprint” by restricting the amount of carbon dioxide our lifestyles produce.
restrict vt. to limit or control the size, amount, or range of sth. 限制；限定
eg In future we will restrict the number of students per class to 20.
将来我们将把每个班的学生人数限定为20人。
I restrict myself to one cup of coffee a day.
我限制自己每天只喝一杯咖啡。
Villagers say the fence would restrict public access to the hills.
村民们说栅栏将限制公众进入山区。
Access to the club is restricted to members only.
俱乐部仅对会员开放。
省略了that/which的定语从句，修饰先行词carbon dioxide
8. It is our responsibility to seize every opportunity to educate everyone about global warming,…
seize a chance / an opportunity : to quickly and eagerly do something when you have the chance to 抓住机会/时机
seize vt. 抓住；夺取
(指强烈的感情、愿望等)突然影响或控制(某人)
句意：我们有责任抓住每一个机会，教育每个人了解全球变暖的原因和影响，因为这是影响这个星球上我们所有人的最严重的问题。
Complete the sentences with the correct forms of the words in the box.
broadcast comprehensive ecology starve seize
1. The Amazon basin, known as the “lungs of the world”, not only provides some __________ balance for the planet, but also food and resources for the local natives.
2. Thousands of baby penguins __________ to death because the changing climate forced their parents to leave them and travel long distance in search of food.
3. Many experts link China’s economic success to the ____________ reform that China has undergone since 1978.
4. The speaker said the media should make more ________ that spread awearness of the climate crisis and possible solutions.
5. To deal with climate change, we must _________ the initiative to do whatever is necessary to protect our environment.
ecological
starved
1
comprehensive
broadcast
seize
Complete the passage with the correct forms of the words in the box.
fuel policy release restrict sustain trend
Carbon dioxide is ________ through human activities such as destroying forests and burning fossil ________, as well as natural processes such as volcanic eruptions. The measurements by climate experts show a rising _______ of carbon dioxide emissions. If this continues, our planet will face further environmental disasters. In response to this environmental issue, China is implementing significant _______ and measures to address climate change, aiming to _______ coal consumption, promote a harmonious relationship between man and nature, build a __________ energy system, and advocate a moderate, green, and low-carbon lifestyle.
released
fuels
trend
policies
restrict
sustainable
2