人教版（2019）选择性必修第三册 Unit3 Environmental Protection Reading and Thinking 课件(共31张PPT，内嵌视频)

(共31张PPT)
UNIT 3
Environmental Protection
Reading and thinking
Step 1: Revision
了解
连同...一起
为了
对...有影响
参考；涉及；指的是
导致
采取行动
付出更高的代价
考虑做某事
对...负责
know about
along with
in order to
have an impact on
refer to
result in/ lead to
take actions
pay a higher price
consider doing sth.
be responsible for
Step 2: Learning objectives
1. To know about the climate change and summarize the main idea of each paragraph;
2. To learn about the “greenhouse effect” and create a diagram describing how it works;
3. To analyse the consequences of climate change and enhance the awareness of environmental protection;
4. To voice their personal opinions about how to deal with climate change.
Step 3:Lead-in
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
Other consequences of the global warming
HELP!
Brainstorming
the rise of
sea level
dying
animals
coastal cities submerged
natural disasters
extreme weather
economic losses
Step 4: Prediction
CLIMATE CHANGE REQUIRES
THE WORLD’S ATTENTION
evidence
evidence/ consequence
1. What is the type of this passage
A. Argumentative writing
B. Narrative writing
C. Expository writing
2. In which part of a newspaper or
magazine may we find this passage
A. Entertainment B. Economy
C. Education D. Environment
Step 5:While-reading
Read for main ideas of each paragraphs.
A. the reasons causing the increase in temperature
B. Introduce the present situation about climate change.
C. A real case showed the great impact the increase in temperature had on Earth’s ecology
D. What should we human do about global warming.
E. The serious consequences of global warming
Paragraph 1
Paragraph 2
Paragraph 3
Paragraph 4
Paragraph 5
Read for structure.
Part 1:
(para._____)
Part 2:
(para._____)
Part 3:
(para._____)
Part 4:
(para._____)
The evidence(证据) of dramatic climate change that had an impact on Earth’s ecology
The causes(原因) of the increase in the global average surface temperature
The consequences(结果) of the rise in temperature
The solutions(解决方法) to reducing greenhouse gas emissions
1-2
3
4
5
Evidence
Cause
Consequences
Solutions
Read for structure.
Read for details.
Evidence (para.1-2)
The earth is getting ______________________.
warmer and warmer
climate
change
Evidence 1:
Evidence 2:
Evidence 3:
Evidence 4:
a warming ocean and atmosphere
melting ice
rising sea levels
a dead polar bear
Causes (para.3)
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 temperature to _____ quickly.
habitable
extra
fossil fuels
atmosphere
surface
short
heat
rise
Greenhouse Effect
Read for details.
A diagram describing how the greenhouse effect works
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
Read for details.
Consequences (para. 4)
Q:What are the consequences of the global temperature rise
extreme weather
and
natural disasters
The rise in temperature
lead to
extreme rainstorms, heat waves
example
serious damage,
costing human lives,
economic losses
results
solutions (para.5)
solutions
governments
make policies
take appropriate actions and measures
individuals
reduce our “carbon footprint” by…
educate everyone about global warming
Read for details.
○
1. The evidence of the global climate change doesn’t include ______.
A. warming ocean and atmosphere B. melting ice and rising sea levels
C. more polar bears and seals D. extreme rainstorms and heatwaves
2. Why is the “natural” greenhouse effect important and necessary
A. Because it is short-wave radiation.
B. Because it is long-wave radiation.
C. Because it releases more heat.
D. Because it helps Earth to sustain life.
3. What’s the function of the first paragraph of the text
A. To introduce the topic.
B. To tell us climate change has been known for decades.
C. To show the evidence of climate change.
D. To confirm that Earth is getting warmer and warmer.
○
○
Further comprehension
4. Why is the photo of a dead polar bear mentioned
A. To describe how people were shocked.
B. To show how global warming influenced Earth’s ecology.
C. To study how the bear died.
D. To explain why the bear was starved to death.
5. Why was the polar bear found on the island of Svalard “skin and bones”
A. Because most of it was eaten by seals.
B. Because the climate was hot, drying it to be skin and bones.
C. Because it appeared to have starved to death.
D. Because Earth’s ecology was worse and worse.
6. How do we know there is evidence that the rise in temperature has led to increasing damage
A. We can see it everywhere every day.
B. It is frequently broadcast in news reports.
C. Polar bears died.
D. Not mentioned in the text.
○
○
○
7. Why does climate change require the world’s attention
A. The number of polar bears is smaller and smaller.
B. News reports are often broadcast about extreme rainstorms and heatwaves causing deaths and losses.
C. Governments can force people to reduce “carbon footprint”.
D. It is affecting all of us on the planet and if it is left alone, we will pay an even higher price.
8. What’s the author’s purpose of writing this text
A. To call for people to donate money.
B. To ask people not to kill polar bears.
C. To appeal to people to care Earth’s ecology.
D. To educate people about global warming.
○
○
What is the author’s purpose
The author’s purpose is to arouse our awareness of the problem of the rising temperature and appeal to us to take appropriate actions to deal with climate change.
Step 6: Post-reading Critical thinking
As a student, what can we do to protect the environment in our daily life
Post-reading Group discussion
Don't litter
Take the stairs instead of elevator
Use handkerchief instead of facial tissue
Climate change
Evidence
Solutions
Causes
Effects
government
individuals
extreme weather
natural disasters
Greenhouse effect
natural greenhouse effect
man-made greenhouse effect
A better understanding of climate change
Summary
Step 7: Test for goals
What is causing the increase in the global average surface temperature Climate 1__________(science) often mention a key climate process 2_______ (call) the “greenhouse effect”, 3______ has two common meanings: the 4_______(nature) greenhouse effect and the man-made greenhouse effect. The natural greenhouse effect 5_______(refer) to the fact 6______ heat from the sun enters the atmosphere and warms Earth’s surface 7_____ short-wave radiation. The heat 8____________(release) back into space at longer wave lengths. Greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat, 9________(keep) Earth’s climate warm and 10__________(habit). 11__________ this process, Earth could not sustain life.
scientist
called
which
natural
refers
that
as
is released
keeping
habitable
Without
However, the man-made greenhouse effect has now become 12____ big problem. When people produce huge amounts of extra greenhouse gases by 13________(burn) fossil fuels, more heat energy is trapped in the atmosphere and causes Earth’s surface temperature 14_________
(rise) quickly. There is strong and comprehensive evidence that the rise in temperature 15_________(lead) to an increase in extreme weather and natural disasters worldwide, not only 16_________(cause) serious damage, but also costing human lives. Climate scientists have warned that if we do not take appropriate actions, this warming trend will 17__________(probable) continue and there will be a 18________ (high) price to pay. In fact, news reports are 19___________(frequent) broadcast about extreme rainstorms and 20_____________(heatwave) causing deaths and economic losses.
a
burning
to rise
has led
causing
probably
higher
frequently
heatwaves
Step 8: Assignments
1. 完成《》66页，课文理解。
2. 完成《》课时作业9。