人教版（2019）选择性必修 第三册Unit 3 Environmental Protection Reading and Thinking课件(共48张PPT)

(共48张PPT)
Unit 3 Environmental Protection
CLIMATE CHANGE REQUIRES THE WORLD’S ATTENTION
Reading and Thinking
1.graph
2.melt
3.starve
4.ecology
5.release
6.trap
7.habitable
Check preparation:
8.sustain
9.fossil fuel
prehensive
11.broadcast
12.emission
13.restrict
图；图表；曲线图
(使)融化；熔化；软化
(使)挨饿；饿死
生态；生态学
排放；释放；发布
捕捉
适合居住的
维持；遭受；承受住
化石燃料
全部的；所有的
详尽的
播送；广播；传播
排放物；排放
限制，限定；束缚
Earth provides enough to satisfy every man’s needs, but not every man’s greed.
— Mohandas K. Gandhi
满足某人的需求
n. 贪婪
译：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。——甘地（印度国父）
Look and discuss:
1. Where do you think this photo was taken
The photo is of a large piece of ice breaking off a large glacier or ice sheet. It’s likely to be in the Arctic or Antarctica or somewhere nearby.
2. What does this photo make you think of
The photo makes me think of the problem of global warming.
What is “Global Warming”
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.
1. What happened to the polar bear
2. How do you feel when you see the photo
Watch a video about what happened to the polar bear.
Q1. What's the type of this text
A. News report.
B. Biography(传记).
C. Expository essay(说明文).
D. Argumentation( 议论文).
Q2. In which part of a newspaper or magazine may we find this passage
A. Entertainment
B. Economy
C. Education
D. Environment
Read the text type
Divide the passage into 4 parts and match the main idea with each part.
Part 1 (Para. ____)
Part 2 (Para. ____)
Part 3 (Para. ____)
Part 4 (Para. ____)
The cause of the increase in the global average surface temperature.
The solutions to reducing greenhouse gas emissions
The evidence and effect of dramatic climate change in global climate.
The consequences of rise in temperature.
1-2
3
4
5
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.
了解
气候变化需要全世界的关注
关注
气候变化
几十年来
毫无疑问
海洋
大气层
和
融化的
海平面上升
证据
急剧的
Para 1: 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
Para 2: An example of climate change
The news photo of a dead polar bear was taken in Norway’s Arctic of Svalbard in 2013.
The polar bear was “little more than skin and bones”.
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 dead 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-ice 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.
对...感到震惊
+定从
挪威的北极圈斯瓦尔巴群岛
根据
+定从
+定从
剩下
皮包骨
+定从
专家
+宾从
位置
好像
挨饿
声称
+宾从
海冰面降低
意味着
海豹
像从前一样
长途跋涉
为了
令人震惊的案例
+宾从
对...有影响
生态
Norway's Arctic island of Svalbard
Para 2: An example of climate change
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
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.
全球平均表面气温
提及
关键的气候过程
温室效应
+非定从
常见的含义
天然的
人造的
v.使变暖
+同位语从句
热量
大气层
指的是
表面
以短波辐射的形式
be released into...
被释放到...
以更大的波长
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.
温室气体
甲烷
CO2
v.留住
适合居住的
维持
+时间状从
产生
大量的
额外
by doing sth.通过做某事
燃烧化学燃料
热能
被困在...
上升
导致
Read Para 3 and find information about “greenhouse effect”.
__________ greenhouse effect
_________ greenhouse effect
causing Earth’s surface temperature ______________ if too much heat energy is _______
keeping Earth’s climate _______ and __________
natural
man-made
warm
habitable
to rise quickly
trapped
Para. 3
the difference between natural greenhouse effect and man-made greenhouse effect
How does greenhouse effect work
Read paragraph 3 and create a diagram describing how the greenhouse effect works.
Heat released back into space
Heat reflected back to Earth’s surface
Reflected sunlight
Atmosphere
Sunlight
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.
全面的
证据
+同位语从句
导致
极端天气
自然灾害
严重破坏
使人类丧命
+宾从
+条件状从
采取适当行动
趋势
付出更高的代价
频繁报道
暴风雨
热浪
经济损失
Read Para 4 and sort out the text information relationship.
The rise in temperature
extreme weather / natural disasters
extreme rainstorms, heatwaves
serious damage, costing human lives, economic losses
leads to
examples
results
Q1. What are the consequences of the global temperature rise
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
持续的
排放
导致
进一步的
持续的
需要...的关注
全世界
政府
考虑
制定方针
采取行动和措施
减少温室气体排放
作为个人
碳足迹
省略that的定从
限制
...的数量
我们有责任去做某事
抓住机会做某事
教育
和
+原因状从
严重问题
影响
What is “carbon footprint”
What can we do to help reduce the global warming
Para 5.
Discuss
What else can we do to help
solutions
Read the text and answer the questions.
1. What happened to the polar bear in the photo Why did the writer write about it
The polar bear in the photo died of starvation. The writer wrote about it because it showed one of the effects of rising temperatures due to climate change.
2. Why is the “natural” greenhouse effect important and necessary
The “natural” greenhouse effect is important because it showed one of the effects of rising temperatures due to climate change.
3. What are the consequences of high greenhouse gas emissions
High greenhouse gas emissions lead to more heat energy being trapped in the atmosphere and rising temperatures.
4. Why did the author mention the climate scientists’ warning
The author mentioned the climate scientists’ warning because it is essential that we take action and so it needs to be brought to everyone’s attention.
5. What is the author’s purpose of writing this text
The author’s purpose is to inform the readers and inspire them to do whatever they can to deal with this problem.
课文语篇研读（全优P81）
Ⅱ.阅读课文，选择正确选项
(　　)1.Why does the author mention the photo of the dead polar bear in the second paragraph
A．To introduce the topic of this text.
B．To show us the cold weather in the arctic.
C．To show the temperature increase in the arctic.
D．To tell us the importance of warmth.
【答案】A
(　　)2.The weather on Earth is getting hotter and hotter mainly because of ________.
A．natural greenhouse gases
B．man-made greenhouse gases
C．low sea-ice levels
D．short-wave radiation
【答案】B
(　　)3.What cause(s) extreme weather on Earth
A．Sea level rise.
B．Human activities.
C．Temperature rise.
D．Burning of fossil fuels.
【答案】C
(　　)4.What does the author express in the last paragraph
A．Shows us some tips in protecting the environment.
B．Requires us to seize the opportunities to protect Earth.
C．Shows us our responsibilities in protecting the environment.
D．Gives some suggestions to the government and individuals.
【答案】D
(　　)5.What’s the author’s purpose of writing this text
A．To call on our attention to environmental protection.
B．To remind us of the increasing temperature on Earth.
C．To show us some endangered animals in the polar areas.
D．To tell us different kinds of greenhouse gases on Earth.
【答案】A
Ⅲ.课文语法填空
In 2013，a photo shocked the whole world，in which a dead polar was nothing but “skin and bones”. It was obvious 1.______ the polar bear had been starved to death. This alarming case showed that the increase in temperature had an impact 2.________ the ecology on Earth.
【答案】1.that　2.on
With the increasing number of population on Earth，more fossil fuels 3.________(burn) in our daily life，4.________(make) greenhouse gases increase rapidly. There is strong evidence that the rise in temperature has already resulted in extreme weather and natural disasters worldwide,5.____ cause not only serious damages, 6.________ also cost human lives. Scientists are afraid that such situations will continue in the future and more extreme rainstorms and heat waves will take place more 7.______(frequent) on Earth.
【答案】3.are burned　4．making
5.which　6.but　7.frequently
Therefore，scientists appeal to governments to make appropriate policies and actions 8.________(reduce) greenhouse gas emissions. As to us individuals，we should also do 9.______ we can to produce less greenhouse gases in our life. It is our 10. ________(responsible) to promote people’s awareness of protecting Earth as we have but only one in this universe.
【答案】8．to reduce　9.what/whatever
10．responsibility