(共47张PPT)
Period 1 Reading and Thinking
Unit 3 Environmental protection
选择性必修三
人教版（2019）
To discuss climate change
To learn to identify the style of this text and infer the writer’s purpose
To learn to draw a diagram
To think about how we can do to deal with climate change
Learning objectives
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
1. What’s happening in the photo
A large piece of ice breaking off a large glacier or ice sheet.
2. What does this photo make you think of
the problem of global warming.
Look and discuss
Lead in
What other consequences may global warming bring about
Global Warming
natural disasters
the rise of the sea level
insect outbreaks
threatening ecosystems
extreme weather
economic losses
coastal cities submerged
wildfires
Brainstorming
Lead in
Lead in
Climate Change Requires
the World’s Attention
Lead in
1. What kind of reading passage is it How do you know
Look at the title and pictures and discuss the questions
Pre-reading
It’s an exposition.The authors sometimes use some graphs or diagrams in their essays in order to convince their readers. These graphs and diagrams often come from scientific research reports and other reliable resources.
2.Who are the target readers
Researchers, climate experts or students.
Look at the graph and answer the question.
Pre-reading
1.What is the graph about What information
can you get from
2.In which year did the temperature start to increase quickly Why
3.What do you think may have caused the global temperature rise
Look at the graph and answer the questions.
Pre-reading
1.What is the graph about
2.What information can you get from
The graph shows the change in the Global Surface Temperature between 1920 and 2016.
It shows the temperature anomaly, which shows how much the temperature has risen above what it would usually be at a base level.
3.In which year did the temperature
start to increase quickly Why
4.What do you think may have caused the global temperature rise
Look at the graph and answer the questions.
Pre-reading
In 1992. Since then, the modernization of industrial technology has accelerated, living standards have risen, and greenhouse gas emissions have increased.
I think it’s caused by increased greenhouse gas emissions and air pollution.
1. Have you ever seen the photo before
Pre-reading
I haven't seen this photo, but I have seen photos like it.
2.What might be the story behind it
The story is that the polar bear starved to death because it could not find enough to eat.
Look at the picture and answer the questions.
What other consequences may global warming
bring about
animals dying
gobal warming
the rise of
the sea level
economic losses
unpredictable future of human
extreme weather
natural
disasters
coastal cities submerged
Pre-reading
Listne to the tape,divide the structure of the article and complete the general idea of each part.
Reading
Part Paragraph Main idea
1 The ___________of dramatic climate change that had an impact on Earth's ecology
2 The __________ of the increase in the global average surface temperature
3 The______________ of the rise in temperature
4 The ____________to reducing greenhouse gas emissions
1-2
evidence
3
4
5
cause
consequences
solutions
Reading
Read the first and second paragraphs and answer the questions.
1.What happened to the polar bear in the photo
2.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.
Reading
Read the first and second paragraphs and answer the questions.
3.Can you use your words to describe how climate change have influenced the polar bear's life
climate change
low sea-ice levels
bears could not hunt
its dead body found
starved to death
had to travel greater distances to find food
Read the third paragraph and analyse the structure of it.
Reading
Greenhouse effect
natural
greenhouse effect
man-made
greenhouse effect
keeping Earth’s climate warm and habitable
causing Earth’s temperature to rise quickly if too much heat energy is trapped
4.Why is the “natural”greenhouse effect important and necessary
5.What are the consequences of high greenhouse gas emissions
Read the third paragraph and answer the questions.
Reading
The "natural" greenhouse effect is important because it warms the Earth9s surface and keeps it habitable.
High greenhouse gas emissions lead to more heat energy being trapped in the atmosphere and rising temperatures.
Learn the tips and answer the questions.
Reading
Draw a diagram
Diagrams are very useful tools that can be used to brainstorm ideas,map out processes, show cause and effect relationships,explain a new idea or concept, and so on.
When you read an essay about scientific issues, you can try drawing a diagram,which will not only allow you to visualise the problems more clearly but also can help demonstrate your creative thinking and problem-solving.
6.What is a diagram Have you ever seen any diagrams in your physics or geography coursebooks
Diagrams are used to brainstorm ideas,map out processes, show cause and effect relationships,explain a new idea or concept, and so on.
Yes, I have.
Learn the tips and answer the questions.
Reading
Draw a diagram
Diagrams are very useful tools that can be used tc brainstorm ideas,map out processes, show cause and effect relationships,explain a new idea or concept, and so on.
When you read an essay about scientific issues, you can try drawing a diagram,which will not only allow you to visualise the problems more clearly but also can help demonstrate your creative thinking and problem-solving.
7.When do authors use diagrams in their writing What's the benefit of using diagrams
When explaining about scientific issues, authors can try drawing a diagram.
It will not only allow you to visualise the problems more clearly but also can help demonstrate your creative thinking and problem-solving.
Read the third paragraph and find out the information related to Activity 3.
Reading
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.
Read the third paragraph and create a diagram describing how the greenhouse effect works.
Reading
Earth
Sunlight
Reflected
sunlight
Heat released
back into
space
Heat reflected
back to
Earth’s
surface
Atmosphere
Read the fourth paragraph and analyse the structure of it.
Reading
The rise in
temperature
extreme weather/
natural disasters
extreme rainstorms,
heat waves
serious damage,
costing human lives,
economic losses
led to
example
results
Reading
8.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.
Read the fourth paragraph and answer the questions.
Reading
9.What examples of extreme weather and disasters do you know Can you make a list
There are sadly many examples of extreme weather and disasters I know of, such as the extreme rainfall in France and the drought in East Africa in 2014. There were also heatwaves on nearly every continent due to climate change.
Read the fourth paragraph and answer the questions.
Read the fifth paragraph and answer the question.
Reading
10.What is the author's purpose of writing this text
11.How can individuals reduce "carbon footprint”
By restricting the amount of carbon dioxide our lifestyles produce.
The author’s purpose is to inform the reader and inspire them to do whatever they can to deal with this problem.
Read the fifth paragraph and answer the question.
Reading
12.Do you think climate change is the result of human activity Give your reasons .
13.What writing techniques does the author use in order to achieve his/her purpose
I do think that climate change is the result of human activities because the majority of scientists also think so, and also because global temperatures have followed the rise in global emissions and population.
Use charts, examples, explanations,questions,
comparisons, and leave a question at the end of your essay.
Discuss the question in groups.
Post-reading
1. Do you think climate change is the result of human activity Give your reasons.
2. Who do you think should take responsibility for dealing with climate change What can we do
Work in plete the tasks.
Post-reading
1. Do you think climate change is the result of human actity Give your reasons.
I do think that climate change is the result of human activities because the majority of scientists also think so, and also because global temperatures have followed the rise in global emissions and population.
Work in plete the tasks.
Post-reading
2. Who do you think should take responsibility for dealing with climate change What can we do
I think we all need to take responsibility for dealing with it. Individuals can change their behaviour and try to reduce their carbon footprint, while companies and governments can do the same on the larger scale.Here is a mind map about the measures to pay attention to it：
Post-reading
Complete the mind map.
switch off lights at
homes and businesses
for an hour
recycle bottles/
paper/plastic bags
buy the recycled
products
take public
transport
buy things that are economic with energy
be LOHAS (lifestyles of health and sustainability )
giving people a voice on the planet’s future
give people a voice on the planet’s future
Language points
Important words
1.starve
【热点品味】starve vi. &vt. (使)挨饿； 饿死；缺乏……的
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.一位研究北极熊多年的专家说，从它尸体的位置看，这只熊似乎是挨饿而死的。
She’s starving herself to try to lose weight.
These animals will starve to death if not given food soon.
【热点归纳】
starve to death 饿死
starve for sth. 渴望获得某物；缺乏
starve to do sth. 渴望做某事
starvation n. 饿死
Important words
Language points
单句语法填空
①They’ll either die from the cold or starve __________ death.
②When will the dinner be ready We ______________ (starve).
③He looks forward to the day when no one will die of _____________ (starve).
are starving
to
starvation
Language points
Important words
2.release
release vt. &n. 排放；释放；发布
The heat is released back into space at longer wave lengths.热量以较长的波长释放回太空。
The contraction of muscles uses energy and releases heat.
When is the best moment to release the date of the election to the newspapers
release a book/ a new film 发行书/新影片
release information 透露消息
release from 从……释放
release… of 解除，使放出
release to 向……发行
Important words
Language points
单句语法填空
①The patient asked the doctor to give him something that would release him _______ his pain.
②The prisoner has served his sentence and ________________ (release) tomorrow.
③On the peak, she burst into tears, ____________ (release) all her emotions.
from
will be released
releasing
Language points
Important words
3. trend
trend n. 趋势；趋向；动向
Climate scientists have warned that if we do not take appropriate actions, this warming trend will probably continue and there wil be a higher price to pay. 气候科学家警告说，如果我们不采取适当的行动，这种变暖趋势可能会继续下去，并将付出更高的代价。
The underlying trend of inflation is still upwards.
The youth like to follow the latest trends in fashion.
set a/the trend 开风气之先，带领新潮流
follow the trend 赶时髦
the trend in… ……的时尚
the trend of… ……的形势
the trend to… ……的倾向
Important words
Language points
完成句子
①The event ____________________ public opinion.
这件事改变了舆论的趋向。
②There is __________________ earlier retirement.
提早退休者有增加的趋势。
changed the trend of
a growing trend to
Language points
Important phrases
1. refer to
提到，谈及，说起；查阅；有关，针对
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.“自然”温室效应是指太阳的热量以短波辐射的形式进入大气层，使地球表面变暖。
She always referred to Ben as “that nice man”.
“In fact，tradition also refers to the things that have been developing and that are still being created，”he said.
(1)refer to… as… 把……称作……
refer… to… 将……送交给……(以求获得帮助等)
(2) reference n. 言及；提及；参考；查阅
Important phrases
Language points
单句语法填空
①While giving the English speech, one is not allowed to refer _____ the notes.
②You’d better write down the phone number of that restaurant for further ____________ (refer).
to
reference
Language points
Important phrases
2.result in
导致
Continued greenhouse gas emissions will result in further warming and long-lasting changes to the global climate.
持续的温室气体排放将导致进一步变暖和全球气候的长期变化。
The talks resulted in reducing the number of missiles.
The accident resulted in three people being killed.
result in“导致”与lead to“导致”同义，且in与to皆为介词，两短语可互换。
result from 因……而引起；因……而导致
as a result 结果；因此(作状语)
as a/the result of 由于……；因为……
without result 毫无结果
Important phrases
Language points
单句语法填空
①His laziness resulted in his failure；that is to say, his failure resulted _______ his laziness.
②As we all know, success results _______ hard work and failure often lies _____ laziness.
from
from
in
1．You can’t see your sister _________ (挨饿)without trying to help her!
2．__________ (放开) the dog. He has been chained up for hours.
3．Running costs are coming down because of cheaper _______ (燃料).
4．Will this light shelf __________ (承受)the weight of all these books
5．The rise in violent crime is a disturbing new ________ (趋势).
Exercise
Release
starve
fuel
sustain
trend
单词拼写
6．I listen to the sports news ____________ (广播) on the radio station every day.
7．The long skirt ___________ (限制了) her movements.
8．The government must make new ___________ (政策) to reduce unemployment.
9．We must ________ (抓住) all opportunities to accelerate development.
10．Buses run _____________ (频繁地) from the city to the airport.
Exercise
restricted
broadcast
policies
seize
frequently
单词拼写
There is little doubt that Earth 1.____________ (get) warmer and warmer. The “man-made”greenhouse effect has contributed to the climate change.
There is strong and comprehensive evidence that the rise in temperature has led to 2.___ increase in extreme weather and natural 3.____________ (disaster) worldwide，not only causing serious damage，but also costing human lives. Climate scientists have warned that 4._____ we do not take appropriate actions, this warming trend will 5.___________(probable) continue and there will be a higher price to pay.
disasters
is getting
an
if
probably
课文语法填空
Exercise
Continued greenhouse gas emissions will result6._____ further warming and long-lasting changes to the global climate，7.________ requires the attention of people all over the world. Governments need to consider making policies and taking appropriate actions and measures 8.___________ (reduce) greenhouse gas emissions.
We as individuals can also reduce our “carbon footprint” by 9.________ (restrict) the amount of carbon dioxide our lifestyles produce. It is our 10.________________(responsible) 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.
in
restricting
which
to reduce
responsibility
课文语法填空
Exercise
https://www.21cnjy.com/help/help_extract.php
