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(共33张PPT)
Lead in
What’s wrong with the polar bear
Lead in
What’s wrong with the polar bear
What caused the polar bear’s sufferings
Food shortage
Declining living space
Rising sea level
The polar bear is starving.
Why do they happen
greenhouse effect
global warming
What are the results of global warming
flood
typhoon
melting ice
Lead in
drought
What are the results of global warming
Lead in
the rise of sea level
wildfire
extinction of animals
Pre-reading
1. Skim the text quickly and answer the following questions:
(1) What's the type of this text
A. A narration
B. An exposition
C. An argumentation
D. A science fiction
(2) In which part of a newspaper or magazine may we find this passage
A. Entertainment B. Economy
C. Education D. Environment
The aim of an exposition is to present information or to explain something.
Pre-reading
C.Earth is getting warmer and warmer.
A.An alarming case about a bear starved to death.
B.We need to do something to reduce greenhouse gas emissions.
Para.1
Para.4
Para.3
Para.2
Para.5
D.Why is Earth getting warmer and warmer
E.The rise in temperature has caused natural disasters.
match the main ideas
Part 1: evidence/phenomenon
Part 1: evidence/phenomenon
Part 2: causes
Part 3: consequences/influences
Part 4: solutions
Para. 1
What evidence of climate change can you find
Climate change
Evidence 1: ___________________________________________
Evidence 2: ___________________________________________
Evidence 2: ___________________________________________
melting ice
rising sea levels
a warming ocean and atmosphere
Para. 2
Put the following sentences into the right order.
① A polar bear’s dead body was found
② Starved to death
③ Low sea-ice levels
④ Climate change
⑤ The bear could not hunt seals
⑥ Had to travel greater distance to find food
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”.
Understand difficult sentence
Para. 2
that引导定语从句
挪威
北极
斯瓦尔巴
who引导定语从句
that引导定语从句
2013年，很多人被一张_________________________________
____一只北极熊尸体新闻照片所震惊。
根据____________________科学家的说法，这只北极熊只剩下“皮包骨头”了。
现的
在挪威北极地区的斯瓦尔巴群岛上发
发现这只北极熊尸体的
Understand difficult sentence
Para. 2
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.
who引导定语从句
that引导宾语从句
位置
挨饿
一位________________专家说，
从它尸体的位置看，这只熊似乎是饿死的。
研究北极熊多年的
Understand difficult sentence
Para. 2
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.
V-ed作后置定语
that引导宾语从句
宣称
海豹
专家称，
___________________低海冰水位
意味着这只熊无法__________捕猎海豹，
所以____________它不得不去更远的地方。
由于气候变化造成的
像以前那样
为了找到食物
phenomenon 现象
cause 原因
Para 1-2
Para 3
The earth is getting warmer and warmer.
Para. 3
There are 2 kinds of greenhouse effect, one is _________, the other is _________. ________ is good for the Earth, because it can ______________ and ______________________________.
But _________ is a problem, because it can _____________ and __________________________. _________________ will cause the increase of man-made greenhouse gases.
natural
man-made
Natural
trap some heat,
keep the earth warm and habitable
man-made
trap more heat
cause the temperatures to rise
Burning fossil fuels
Read Para. 3 and fill in the blanks.
Para. 3
Why global temperature is rising
Discussion
Because we have more man-made greenhouse gases, which trap more heat from the earth, making it not being able to be released to the outer space.
Understand difficult sentence
Para. 3
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.
that引导同位语从句
“自然”温室效应指的是这个事实：
来自太阳的热量进入大气层，
并________________使地球表面升温。
热量____________被释放回太空。
以短波辐射的形式
以更长的波长
大气层
表面
短波
辐射
释放
波长
phenomenon 现象
cause 原因
Para 1-2
Para 3
The earth is getting warmer and warmer.
consequences 结果
Para 4
too much man-made greenhouse gases
Para. 4
The rise in temperature
led to
example
results
extreme rainstorms, heatwaves
serious damage, costing human lives
extreme weather/ natural disasters
Para. 4
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.
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.
Understand difficult sentence
Para. 4
that引导同位语从句
全面的
灾害
破坏
V-ing作结果状语
有力且全面的证据表明：
气温上升已导致世界范围内极端天气和自然灾害的增加，
不仅造成严重的破坏，而且还致人丧命。
phenomenon 现象
cause 原因
Para 1-2
Para 3
The earth is getting warmer and warmer.
consequences 结果
Para 4
too much man-made greenhouse gases
serious damage, costing human lives
actions 措施
Para 5
Para. 5
Government Individuals
Make policies
Take appropriate actions and measures
Restricting the amount of CO2
Educate everyone about global warming
Para. 5
What can we do to restrict the amount of CO2 in our daily life
Group discussion
Choose a bike or public transport instead of a car
Reduce you meat consumption
Para. 5
What can we do to restrict the amount of CO2 in our daily life
Group discussion
Switch off the lights when leaving the room
Reduce, reuse, repair and recycle
Para. 5
How to reduce carbon footprint
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.
Understand difficult sentence
Para. 5
-ing作后置定语
我们有责任抓住每一个机会，去教育每个人有关于全球变暖及其原因和影响，
因为这是__________________________最严重的问题。
影响我们这个星球上所有人的
以及
post-reading
People are so selfish. They only care about the economic growth.
How greedy and selfish people are！
How greedy and selfish people are！
post-reading
Are you greedy and selfish
post-reading
Sometimes we shouldn’t be so self-centered. We should focus more on protecting the Earth than our own comfort and convenience. Because being humble might be the key to ensuring our civilization’s survival.
有时候我们不要那么的以自我为中心，从保护地球的角度出发，而不是个人的喜恶出发，这种谦卑，可能正是文明存续的转机
Key phrases and expressions
Summary
along with…
have an impact on
provide evidence
greenhouse effect
refer to…
cause damage
restrict the amount of
seize the opportunity
似乎
和；连同
对...产生影响
提供证据
温室效应
指的是
造成损害
抓住机会
限制…的量
appear to do

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