高中英语 Unit22 lesson 1 教学课件 北师大版选修8
buying energyenergyefficient light bulbs
Language points
1. Scientists have reported that human beings are causing changes in the Earth’s climate---something
The Greenhouse Effect
Without this greenhouse heating, the Earth's average temperature would be only about -73 C (-100 F); even the oceans would be frozen under such conditions, such as the Moon and the Mars. Moon Mars
What effect will global warming have on the sea and the living things in the sea?
What will happen with global warming?
Will global warming affect the life of North Polar Bear?
5) How can we help solve the problem of global warming? We can make small changes like taking public transport, recycling, using low-flow shower heads, buying light bulbs that use less energy, using recycled paper and switching off the lights when we leave a room.
Reading
Before you start
Which countries do you think contribute more to global warning? a) developed countries b) developing countries more industry and technology
6) What are the would-be consequences of global warming? It will cause more frequent flooding, heat waves and droughts. And serious diseases will spread and industries that rely on nature such as fishing will be badly affected. It will cause the polar ice to melt, raising sea levels, and flooding many islands and cities.
2. They claim that gases pumped into the Earth’s atmosphere by the factories and vehicles have been speeding up the process of global warming and affecting our climate. What is the function of the underlined part “pumped…vehicles”?
What Are Greenhouse Gases? Some greenhouse gases occur naturally in the atmosphere, while others result from human activities. Naturally occurring greenhouse gases include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Certain human activities, however, add to the levels of most of these naturally occurring gases .
Look at the pictures and what do you know about global warming.
The Greenhouse Effect The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, and methane, for example) trap energy from the sun. Without these gases, heat would escape back into space and Earth’s average temperature would be about 60ºF colder. Because of how they warm our world, these gases are referred to as greenhouse gases.
Lesson 1 Global Warming
Appreciation of a film trailer
Words preview
consensus beyond claim relevant ray bounce pin n. 一致的意见 prep. 超出 vt. 声称 adj. 有关的 n. 光线 vi. 反弹 vt. 固定
previously _________ seen as _________________. beyond our control
beyond 在那边 超出 在那边/超出 超出……的范围 的范围 This book on literature is beyond our reach. This bicycle is beyond repair.
Owing to the rise in atmospheric carbon dioxide caused by modern industrial societies' widespread combustion of fossil fuels (coal, oil, and natural gas), the greenhouse effect on Earth may be intensified and long-term climatic changes may result.
Words preview
agriculture coincidence condemn drought federal reservation sacrifice n. 农业 n. 巧合 vt. 宣判死刑 注定毁灭 宣判死刑,注定毁灭 n. 旱灾 adj. 联邦的 n. 保留 存疑 保留,存疑 vt., vi. 牺牲 献出 牺牲,献出
Taking public transport like buses can reduce greenhouse gas emissions.
And taking train can also help a reduction of greenhouse gas.
Buy the recycled products
3) By how much has the global average temperature increased in the last 100 years? By 1ºF (One degree Fahrenheit) 4) Are greenhouse gases necessary for life on Earth? Yes, they are. Because they trap heat from the sun in the Earth’s atmosphere. Otherwise the Earth would be cold and unsuitable for life.
Words preview
advocate recycle substitute threaten pancake hurricane vt. 主张 提倡 主张,提倡 vt. 回收利用 n. 代替品 代用品 代替品,代用品 vt. 威胁 n. 薄煎饼 n. 飓风
Expressions preview beyond one’s control 超出 超出……的控制， 的控制， 的控制 不受……的控制 不受 的控制 look ahead 展望未来 refer to 指,意即 意即 in turn 依次 lead to 引起,导致 引起 导致 take action 采取行动 ahead of 在……前面 前面
It is used as attributive (定语 定语). 定语 speed up 反义 slow down 反义: affect have a bad effect on sth. 3. Global warming ________ an refers to average increase in the Earth’s temperature that, in turn, _______ leads to climate change.
What will happen to penguins because of global warming?
Read the text and answer these questions. 1) What is global warming? Global warming refers to an average increase in the Earth’s temperature that, in turn, leads to climate change. 2) What human activities are causing global warming? Industry, agriculture, the cutting down of forests, the increase in transport and the burning of fuels are causing global warming.
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北师大版高中英语选修8课件Unit 22 Environmental Protection 22.1(1)
难堪的地球母亲
Take.Take.Take.The relationship between a child and a mother always seems to follow such a pattern.Like a child endlessly asking,we humans,throughout history,have been continually demanding what we desire from nature.
4.加快速度
speed up
5.展望未来
look ahead
6.提及,参考
refer to
7.依次,轮流
in turn
8.把……加起来
add up
-12-
Warm-up & Lesson 1 Global Warming 一二三四五六
晨读晚诵
预习导引
核心归纳
9.at risk 有危险,处于危险中
10.a number of 一些,许多,大量的
一二三四五六
四、根据课文内容选择正确答案
1.The main purpose of the first paragraph is
.
A.to introduce the topic of global warming to the readers
B.to remind the readers of human activities in the past
-5-
Warm-up & Lesson 1 Global Warming
晨读晚诵
预习导引
核心归纳
单词注释 导读诱思
1.Choose two verbs to describe the relationship between a child and
高中英语选修8北师大版课件：Unit+22 Environmental+Protection+22
晨读晚诵
索取,索取,再索取。孩子和母亲的关系似乎永远都是这一种形 式。人类和自然母亲的关系又何尝不是如此呢?
Nature Is Our Mother
难堪的地球母亲 Take.Take.Take.The relationship between a child and a mother always seems to follow such a pattern.Like a child endlessly asking,we humans,throughout history,have been continually demanding what we desire from nature.
Now,standing here at the threshold6 of the 21st century,we cannot help thinking of our posterity7.Nature is not only the mother of the present generation,but also the mother of the generations to come.How severely our posterity will criticize us if we leave them a barren8 and lifeless mother?How much more they will appreciate us if we give them a world of harmony to inherit9?Let us start respecting and caring for nature from now on.Let us start the campaign of creating a mutually10 beneficial relationship between people and nature right from thisபைடு நூலகம்moment.With this new start,we have no reason to doubt that our children,and our children’s children will live in a brand new age of green trees,clean air,crystal water,blue sky and an even more promising world!
索取,索取,再索取。孩子和母亲的关系似乎永远都是这一种形 式。人类和自然母亲的关系又何尝不是如此呢?
Nature Is Our Mother
难堪的地球母亲 Take.Take.Take.The relationship between a child and a mother always seems to follow such a pattern.Like a child endlessly asking,we humans,throughout history,have been continually demanding what we desire from nature.
Now,standing here at the threshold6 of the 21st century,we cannot help thinking of our posterity7.Nature is not only the mother of the present generation,but also the mother of the generations to come.How severely our posterity will criticize us if we leave them a barren8 and lifeless mother?How much more they will appreciate us if we give them a world of harmony to inherit9?Let us start respecting and caring for nature from now on.Let us start the campaign of creating a mutually10 beneficial relationship between people and nature right from thisபைடு நூலகம்moment.With this new start,we have no reason to doubt that our children,and our children’s children will live in a brand new age of green trees,clean air,crystal water,blue sky and an even more promising world!
北师大课标版高中英语选修8Unit 22 Lesson 1(共30张PPT)
to humans.
C. Greenhouse gases do more good than harm
to humans.
D. Proper greenhouse gases are quite
necessary to the earth.
2) Which of the following is NOT mentioned as
polar melting
skinny polar bear
Shrinking ocean
wildness
flooding
drought
Poverty
natural disasters volcanic eruptions Earthquakes
How much do you know about
global warming?
1. What is it?
2. What’s the impact of it? 3. What has caused it? 4. What can we do to slow it down?
p6 2
II. Match the meanings of following words.
the result of global warming?
A. Typhoons.
B. Serious diseases.
C. Polar ice melting. D. Heat waves.
p7 3
III. Answer these questions.
1. What is global warming? 2. What human activities are causing global
高三英语 Unit22《Lesson1》课件 北师大版选修8
What will happen to penguins because of global warming?
Read the text and answer these questions. 1) What is global warming? Global warming refers to an average increase in the Earth’s temperature that, in turn, leads to climate change. 2) What human activities are causing global warming? Industry, agriculture, the cutting down of forests, the increase in transport and the burning of fuels are causing global warming.
Look at the pictures and what do you know about global warming.
The Greenhouse Effect The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, and methane, for example) trap energy from the sun. Without these gases, heat would escape back into space and Earth’s average temperature would be about 60ºF colder. Because of how they warm our world, these gases are referred to as greenhouse gases.
高中英语选修8北师大版课件：Unit+22 Environmental+Protection+22
导读诱思 1.Choose two verbs to describe the relationship between a child and a mother.
and 2.Which is the topic sentence of the second paragraph? 3.Which of the following words can describe the writer’s attitude toward the future? A.Passive. B.Active. C.Neutral. D.Unconcerned. 答案:1.take(ask/demand);give(offer/devote) 2.The last sentence:Our ruthless exploitation has permanently impaired our mother earth. 3.B
单词注释 1.erosion /I̍rəʊʒn/ n.流失 2.deforestation /̩diː̩fɒrI̍steIʃn/ n.滥伐森林 3.prosperity /prɒ̍sperəti/ n.繁荣;兴旺,昌盛 4.ruthless /̍ruːƟləs/ adj.无情的,冷酷的;残忍的 5.impair /Im̍peə(r)/ vt.损害;削弱 6.threshold /̍Ɵreʃhəʊld/ n.门槛;开端,入口 7.posterity /pɒ̍sterəti/ n.后代,后世;子孙;后裔 8.barren /̍bærən/ adj.贫瘠的;不结果实的;无效果的 9.inherit /In̍herIt/ vt.& vi.继承 10.mutually /̍mjuːtʃʊəli/ adv.互相地,彼此地
高中英语复习北师大版选修八《Unit 22 The World Wildlife Fund》(共38张PPT)
• provide natural habitats for plants , animals , insects and birds
• produce clean oxygen • keep water • provide abundant natural resources • and so on
The importance of oceans
• be home to many marine animals • provide abundant sea food • ...
Summary
• About two thirds of the Earth's surface is ______(cover) by the seas . Seas are home________ many species. It is also an important source of food. _________ the seas, we could not live. __________(fish) and _________(pollute) are made the oceans in danger. So we need to set up marine_____________(conserve) to protect sea life.
Oceans Problems Consequences Solutions
The main problems of oceans
pollution e
over-fishing
The consequence of marine pollution and overfishing
Trash and toxic chemicals threaten marine species and their habitats.
• produce clean oxygen • keep water • provide abundant natural resources • and so on
The importance of oceans
• be home to many marine animals • provide abundant sea food • ...
Summary
• About two thirds of the Earth's surface is ______(cover) by the seas . Seas are home________ many species. It is also an important source of food. _________ the seas, we could not live. __________(fish) and _________(pollute) are made the oceans in danger. So we need to set up marine_____________(conserve) to protect sea life.
Oceans Problems Consequences Solutions
The main problems of oceans
pollution e
over-fishing
The consequence of marine pollution and overfishing
Trash and toxic chemicals threaten marine species and their habitats.
北师大版高中英语选修8 Unit22 Communcication Workshop参考课件
3 Read these statements. Try to predict the kind of information that is missing. Then listen to the radio programme and complete the notes with one or two words.
3 Noise pollution is generally only a problem urban in areas. 4 Noise pollution in cities is caused transport by industrialization , , and larger urban populations . 5 Television sets stereo systems , can be all air conditioners , and pets sources of noise pollution.
9 Noise pollution can also stop us from
sleeping properly.
10 Noise pollution can have a very negative effect on
how
well
we
concentrate at work and can therefore affect
Noise made by aircraft
Noise pollution
Any unwanted man-made sound that penetrates the
environment is noise pollution. Noise pollution can be
北师大高中英语选修八Unit22Lesson1教学课件
高中英语课件
madeofcanruohanxing
英语：Unit22 lesson 1 教学课 件（北师大版选修8）
Lesson 1 Global
Warming
Appreciation of a
film trailer
Words preview
consensus beyond claim relevant ray bounce pin
n. 一致的意见 prep. 超出 vt. 声称 adj. 有关的 n. 光线 vi. 反弹 vt. 固定
Words preview
agriculture coincidence condemn drought federal reservation sacrifice
n. 农业 n. 巧合 vt. 宣判死刑,注定毁灭 n. 旱灾 adj. 联邦的 n. 保留,存疑 vt., vi. 牺牲,献出
_p_r_e_v_io_u__sl_yseen as _b_e_y_o_n_d_o_u__r_c_o_n_t_r_o_l .
beyond 在那边/超出……的范围
This book on literature is beyond our reach. This bicycle is beyond repair.
2. They claim that gases pumped into the Earth’s atmosphere by the factories and vehicles have been speeding up the process of global warming and affecting our climate. What is the function of the underlined part “pumped…vehicles”?
madeofcanruohanxing
英语：Unit22 lesson 1 教学课 件（北师大版选修8）
Lesson 1 Global
Warming
Appreciation of a
film trailer
Words preview
consensus beyond claim relevant ray bounce pin
n. 一致的意见 prep. 超出 vt. 声称 adj. 有关的 n. 光线 vi. 反弹 vt. 固定
Words preview
agriculture coincidence condemn drought federal reservation sacrifice
n. 农业 n. 巧合 vt. 宣判死刑,注定毁灭 n. 旱灾 adj. 联邦的 n. 保留,存疑 vt., vi. 牺牲,献出
_p_r_e_v_io_u__sl_yseen as _b_e_y_o_n_d_o_u__r_c_o_n_t_r_o_l .
beyond 在那边/超出……的范围
This book on literature is beyond our reach. This bicycle is beyond repair.
2. They claim that gases pumped into the Earth’s atmosphere by the factories and vehicles have been speeding up the process of global warming and affecting our climate. What is the function of the underlined part “pumped…vehicles”?
高中英语复习北师大版选修八《Unit 22 The World Wildlife Fund》(共38张PPT)
Forests
Problems and its causes
Importance
Solutions
The main causes of deforestation
forest fires illegal logginge climate change
The importance of forests
Summary
• Forests are the _________(nature) habitats for species of plants and animals. __________(forest) is biggest problem we are facing now. It is caused by __________(law) logging , forest____(fire) and climate change. The world's forests are _______(disappear) at______rate of 146,000 square meters ________(year). To protect _______(exist) forest, the WWF _______(spend)$40million a year and plant new trees in ________(deforest) areas.
Oceans
Problems
Consequences
Solutions
The main problems of oceans
pollution e
over-fishing
The consequence of marine pollution and overfishing
北师版选修8配套课件 Unit22-Period Ⅰ
教 学 方 案 设 计
street lights had a higher number of mates than males living in dark forests.
课 前 自 主 导 学
菜
BS· 英语 教 学 目 标 分 析
选修
Artificial light at night has deadly consequences for many animals active at night. Millions of insects, for example, die each year due to the attraction to street lamps. Although artificial light does not always have such deadly
教 学 方 案 设 计
consequences of light pollution on wild populations of animals have not received enough attention.
课 前 自 主 导 学
菜
BS· 英语 教 学 目 标 分 析
选修
Scientists have now shown that permanent night lighting alters the reproductive (生殖的) behavior of birds. In those habitats that are affected by artificial light, males started to sing earlier and females advanced their breeding (繁殖) activities. Moreover, males occupying territories with