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(共29张PPT)
UNIT 3
Environmental Protection
Reading and Thinking
1. What can you see in the picture
2.What is the cause of this phenomenon
The ice is melting.
Global warming
Lead-in
the rise of sea level
dying animals
drought
extreme weather
What consequences may global warming bring about
Lead-in
Climate Change Requires The World’s Attention
What do we need to do
Pre-reading
Match the main idea with each paragraph
Para 1
Para 2
Para 3
Para 4
Para 5
A problem of climate change.
The causes of the increase in the global temperature.
The consequences of the rise in temperature.
The solutions to reducing greenhouse gas
emissions.
An exact example of climate change.
Read for Main Idea
problem
consequence
causes
solutions
Read for Structure
CLIMATE CHANGE REQUIRES THE WORLD'S ATTENTION
We have known about climate change for decades. There is little doubt that Earth is getting warmer and warmer (see the graph). A warming ocean and atmosphere along with melting ice and rising sea levels provide evidence of a dramatic change in the global climate.
What can we infer from the graph about global surface temperature from 1920 to 2016
A. The temperature remained stable throughout the period.
B. The temperature showed a steady upward trend after 1980.
C. The temperature reached its peak in 1960.
D. The temperature decreased significantly before 1940.
What is the problem about climate change
The ________ is getting warmer and warmer.
Evidence 1: _______________________________
Evidence 2: ______________
Evidence 3: ___________________
Earth
a ocean and atmosphere
ice
sea levels
climate
change
warming
melting
rising
Read for Details
Para.1
1. 几十年来
2. 毫无疑问……
3. 变得越来越暖
4. 为……提供证据
5. 剧烈的变化
6. 全球气候
Para.1
1. for decades
2. there is little doubt that…
3. get warmer and warmer
4. provide evidence of…
5. a dramatic change
6. global climate
In 2013, a lot of people were shocked by a news photo of a dead polar bear that was found on Norway's Arctic island of Svalbard. According to the scientists who found its body, all that remained of the polar bear was “skin and bones”. An expert who has studied polar bears for many years said that from the position of its dead body, the bear appeared to have starved and died. Experts claimed that low sea-levels (caused by climate change) meant the bear could not hunt seals as before, so it had to travel greater distances in order to find food. This alarming case showed how the increase in temperature had an impact on Earth's ecology.
Why did the polar bear in the photo starve to death according to the text
A. It was hunted by human beings.
B. It lost its way in the Arctic.
C. Climate change reduced sea ice, making it harder to hunt seals.
D. It suffered from a serious disease.
climate change
starvation
longer
food-seeking travel
lack of food
low sea-ice level
What is the root cause
lead to； cause; account for
The following reasons proved the death of the polar bear. Put them in a correct order.
Read for Details
Para.2
1. 被……震惊
2. ……所剩下的一切
3. 饿死
4. 低海冰水平
5. 导致某物做……
6. 跋涉更远的距离
7. 对……产生影响
8. 地球生态
Para.2
1. be shocked by…
2. all that remained of…
3. starve and die
4. low sea-ice levels
5. cause sth. to do…
6. travel greater distances
7. have an impact on…
8. Earth’s ecology
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.
What is the main difference between the "natural" greenhouse effect and the "man-made" one
A. The natural one is harmful, while the man-made one is beneficial.
B. The natural one keeps Earth habitable, while the man-made one causes rapid temperature rise.
C. The natural one is caused by burning fossil fuels, while the man-made one is a natural process.
D. The natural one traps no heat, while the man-made one traps all heat.
Para.3
Keeping Earth’s warm and habitable
“Natural” greenhouse effect
“man-made” greenhouse effect
Causing Earth’s surface temperature to rise quickly if too much heat energy is trapped
Greenhouse effect
What are the causes of the increase in the global temperature
Read for Details
1. 全球平均地表温度
2. 指的是；涉及
3. 短波辐射
4. 释放回太空
5. 更长的波长
6. 温室气体
7. 留住部分热量
8. 使……温暖宜居
9. 维持生命
10. 大量的……
11. 燃烧化石燃料
12. 导致……快速上升
Para.3
1. global average surface temperature
2. refer to…
3. short-wave radiation
4. release back into space
5. longer wave lengths
6. greenhouse gases
7. trap some of the heat
8. keep…warm and habitable
9. sustain life
10. huge amounts of…
11. burn fossil fuels
12. cause…to rise quickly
There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather and natural disasters worldwide, not only causing serious damage, but also costing human lives. Climate scientists have warned that if we do not take appropriate actions, this warming trend will probably continue and there will be a higher price to pay. In fact, news reports are frequently broadcast about extreme rainstorms and heatwaves causing deaths and economic losses.
What does the author imply by "a higher price to pay" in Paragraph 4
A. People will have to pay more for energy.
B. The economic losses from extreme weather will be greater.
C. More human lives will be lost and more severe damage will occur.
D. The cost of reducing greenhouse gas emissions will be high.
The rise in the temperature
extreme weather & natural disasters
serious damage, costing human lives
extreme rainstorms, heatwaves
led to
results
examples
Q1:What are the consequences of high greenhouse gas emissions
Q2. Why did the author mention the climate scientists’ warning
Because global warming needs everyone’s attention and it is essential that we take appropriate actions.
Read for Details
Para.4
1. 有力且全面的证据
2. 导致……的增加
3. 极端天气
4. 自然灾害
5. 造成严重破坏
6. 夺去人类生命
7. 采取适当行动
8. 变暖趋势
9. 更高的代价
10. 播报新闻报道
11. 经济损失
Para.4
1. strong and comprehensive evidence
2. lead to an increase in…
3. extreme weather
4. natural disasters
5. cause serious damage
6. cost human lives
7. take appropriate actions
8. warming trend
9. a higher price to pay
10. broadcast news reports
11. economic losses
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 is the author’s main purpose in writing the last paragraph
A. To blame governments for not taking action.
B. To explain the causes of global warming.
C. To call on individuals and governments to take action against climate change.
D. To predict the future of global climate.
What can be done to solve the global warming
policies
actions and measures
carbon footprint
educate
Para.5
Read for Details
1. 温室气体排放
2. 导致进一步变暖
3. 持久的变化
4. 需要……的关注
5. 制定政策
6. 采取适当行动和措施
7. 减少温室气体排放
8. 减少某人的“碳足迹”
9. 限制……的数量
10. 抓住每个机会做某事
11. 成因与影响
Para.5
1. greenhouse gas emissions
2. result in further warming
3. long-lasting changes
4. require the attention of…
5. make policies
6. take appropriate actions and measures
7. reduce greenhouse gas emissions
8. reduce one’s “carbon footprint”
9. restrict the amount of…
10. seize every opportunity to do…
11. the causes and impacts
课文用一只北极熊饿死的案例，揭示全球变暖的严峻现实。它解释了温室效应：自然温室效应维持地球宜居温度，而人类燃烧化石燃料引发的人为效应，正导致气温急剧上升。这引发了极端天气和自然灾害，造成巨大损失。文章呼吁政府采取行动，并号召个人减少碳足迹，共同应对气候变化这一全球难题。
The passage uses the case of a starved polar bear to show the serious reality of global warming. It explains the greenhouse effect: the natural one keeps Earth habitable, while the man-made one from burning fossil fuels causes a sharp rise in temperature. This leads to extreme weather and natural disasters, causing great damage. It urges governments to take action and calls on individuals to reduce our carbon footprint to deal with this global problem.
What can we do to reduce
“carbon footprint”
Post-reading
What is “carbon footprint”
Sort the garbage
Avoid single-use plastic bags
Volunteeer to plant trees
Encourage peers to participate in it
End wasting resources
Advocate for change
Ride a bike or walk to school
Turn off all electric devices when necessary
Heat reduction
What can we do
Post-reading
1. Lucid waters and lush mountains are valuable as "mountains of gold and silver".
青山就是金山银山。
2. If we don't save water, the last drop of water will be our tear.
如果我们不节约用水，那么最后一滴水将会是我们的眼泪。
3. Only by changing the way we treat the environment can we get along well with it. Only by saving the environment can we save ourselves.
我们只有政变对待环境的方式，才能和它好好相处。我们只有拯救环境，才能拯救自己。
More English Idioms
Where is my home
绿水青山，
就是金山银山。
Post-reading
Earth provides enough to satisfy every man’s needs, but not every man’s greed.
— Mohandas K. Gandhi
地球所提供的物质财富足以满足每个人的需求，却不足以满足每个人的贪欲。
——莫罕达斯·卡拉姆昌德·甘地
Proverbs

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