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(共22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。
Lead-in
What’s the environmental problem in the video
skin and bones
starve to death
what do you guess made the polar bear dead
北极熊
Earth becomes ,and ice ,making it hard for the polar bear to find enough .
warmer
melts
food to eat
Revision 2: Tell the words or phrases from the text (competing questions)
1. Governments need to consider___________ and taking appropriate actions and measures to reduce greenhouse gas emissions.
2. It is our responsibility to _______________ to educate everyone about global warming
3. There is _____________________evidence that the rise in temperature has led to an increase in extreme weather and natural disasters worldwide.
4. Without this process, Earth could not__________ life.
5. This alarming case showed how the increase in temperature had an impact______ Earth's ecology.
making policies
seize every opportunity
strong and comprehensive
sustain
on
Text Reading
Climate Change Requires the World’s Attention
Q1. What's the type of this text
A. News report.
B. Biography.（自传）
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
Skimming: read the text quickly and find the right choice for the two questions
1. What is the type of this passage
A. Argumentation
B. Narration
C. Exposition
D. Advertisiment
2.According to the title, can you predict what aspects are included in the following essay
Because in the expository text, the authors sometimes use some graphs or diagrams in their essays in order to be more objective and scientific.
Part 1:
(para.1-2 )
Part 2:
(para. 3)
Part 3:
(para. 4)
Part 4:
(para. 5)
D: The evidence of dramatic climate change that had an impact on Earth’s ecology
B: The causes of the increase in the global average surface temperature
A: The results of the rise in temperature
C: The solutions to reducing greenhouse gas emissions
Match the main idea with each part.
Evidence (para.1-2)
1.What evidence of climate change can you find
Evidence 1:
Evidence 2:
Evidence 3:
a warming ocean and atmosphere
melting ice
rising sea levels
climate
change
Evidence 4:
a dead polar bear
Read for structure
Find out the topic sentence of each paragraph.
Paras.1&2
Para.3
Para.4
Para.5
Expository Essay
problem
Paras.1&2
Para.3
Para.4
Para.5
cause
consequence
solutions
What is the author’s purpose of writing this text
The author’s purpose is to inform the reader and inspire them to do whatever they can to deal with this problem.
CLIMATE CHANGE REQUIRES THE WORLD'S ATTENTION
气候变化需要全世界的共同关注
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.
P1
毫无疑问
=as well as 和……一起
剧烈变化
1.There is little doubt_____Earth is getting warmer and warmer .
2.According to the graph, We doubt _____ the global temperature will fall in 2024.
language learning: Find the difference
that
Whether
fact
question
What information can we get from the graphs
Thinking
5.climate change
2.starvation
3.longer
food-seeking travel
4.lack of food
1.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.
Para2
The rise in the temperature
extreme weather
& natural disasters
serious damage, costing human lives
extreme rainstorms, heatwaves
lead to
results
examples
What are the consequences of the global temperature rise
Consequences (para. 4)
What are the solutions to reduce greenhouse gas emissions
01
The governments:
02
Individuals:
make policies
take appropriate actions and measures.
reduce our “carbon footprint” by…
educate everyone about global warming
Solutions (para. 5)
Group discussion
As a student, what can we do to reduce our “carbon footprint”
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
P3
全球平均表明温度
温室效应
短波辐射
甲烷和二氧化碳
使地球的气候温暖宜居
后置定语
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.
p3
维持生命
大量的
困在大气层中
While-Reading: read for the details（Para3）
Read Para 3 and find information about “greenhouse effect”.
__________ greenhouse effect
_________ greenhouse effect
causing Earth’s surface temperature ______________ if too much heat energy is _______
natural
man-made
warm
habitable
to rise quickly
trapped
keeping Earth’s climate
_______ and __________
How the greenhouse effect works in natural and man-made situations
greenhouse effect
natural greenhouse effect
man-made
(human enhanced) greenhouse effect
keeping Earth’s climate warm and habitable
causing Earth's surface temperature to rise quickly
Comprehending
Para 3

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