Unit 3 Conservation Reading Club 2课件(共31张PPT) 北师大版(2019)选择性必修第一册

(共31张PPT)
Unit 3
NATURE IS TURNING ON US
To read about natural disasters.
To read for general understanding.
To read for specific information and understanding words in context.
What kind of natural disasters can you think up
tsunami
typhoon/ hurricane
landslide
volcanic eruption
forest fires
earthquake
thunderstorm
drought
flood
drought
earthquake
flood
forest fire
hurricane
landslide
tsunamis
typhoon
volcanic eruption
旱灾
地震
洪水, 水灾
森林火灾
飓风
滑坡, 山崩
海啸
台风
火山爆发
caused by people
made worse by people
natural
Which of the disasters mentioned above do you think are:
Caused by people:
Forest fire
(in many cases, wildfires are started by human activity such as unattended campfires or cigarette butts)
Made worse by people:
Drought
(human activities such as excessive water use and deforestation can exacerbate drought conditions)
Flood
(urbanization and poor land management practices can increase the likelihood and severity of flooding)
Hurricane
(climate change caused by human activities is contributing to more intense and frequent hurricanes)
Landslide
(deforestation, mining, and other activities that alter the natural landscape can trigger landslides)
Natural:
Earthquake
Tsunami
Typhoon
Volcanic eruption
It's worth noting, however, that even disasters that are considered “natural” can have human causes or be made worse by human activities in some way. For example, human-induced climate change is contributing to more extreme weather events, including hurricanes and droughts, and poor urban planning can exacerbate the impacts of earthquakes and tsunamis.
What is the general idea of the text
A. Volcanic eruption and earthquakes have been a threat in certain parts of the world.
B. In the last few years we have seen environmental disasters on a grand scale, and experts are predicting far worse to come.
C. There has been terrible flooding in many parts of the world.
D. A professor predicts the natural disasters could become worse in the future.
Complete the diagram with facts about natural disasters around the world.
Natural
Disasters
Reduced rainfall
Volcanic eruptions
Landslides
Hurricanes and typhoons
Earthquakes
central Italy, in 2016
Asia, Europe and South America
in Somalia and Kenya, in 2017
Canada in 2016
Indonesia, in 2016
Mt Tambora in Indonesia, 1815
Mocoa in Colombia, in 2017
US, Central America
1
1. Why are landslides and earthquakes more dangerous now
Because around half the world’s population lives in cities. Many people in cities and towns are at risk from landslides and a great number of people live at risk from earthquakes too.
Read the text again and answer these questions.
2. What could be the biggest threat to the planet in the future
A volcanic eruption.
It might send the planet into winter for years.
3. What effects might this threat have
According to the author, why is nature turning on us
2
First, overpopulation results in heavy building using local materials without proper planning, which can contribute to landslides or collapse during earthquakes. Next, global warming, caused by factories and vehicles, and the destruction of forests cause climate change and extreme weather conditions.
Is the author’s attitude positive or negative towards the future Find evidence from the text.
The author has a negative point of view.
He believes that environmental disasters will get worse, after speaking to experts. He says “Experts are predicting worse to come.”, “Most disaster experts believe that things could get a lot worse.”, “He warns that the world has not seen the worst yet.”, and “There are about two of these events every 100,000 years…”
3
Do you agree with the author Why What is your attitude towards the future
4
I agree with the author that things will get worse. The writer presents a lot of facts of disasters in the text. In recent years there have been more natural disasters than in the past, so I think this will continue unless we can manage to stop or reverse global warming.
Work in pairs. Discuss these questions.
1. What natural disaster had happened in your memory
2. What were the results of the disaster
3. What do you think governments can do to help prevent natural disasters
4. What organisations do you know that provide aid after
disasters, or work for the environment
5. What can we do to improve the environment and help
victims of natural disasters
In the last few years we have seen environmental disasters on a grand scale, and experts are predicting worse to come. Jin Li reports on our Earth's changeable weather patterns.
Thunderstorms, floods, earthquakes, typhoons, volcanic eruptions, tsunamis, and forest fires have become increasingly common. There have been terrible floods in Asia, Africa, America and Oceania. Storms have been getting worse everywhere too, with more hurricanes hitting the US and Central America. Reduced rainfall has affected Africa for years, with severe droughts in Somalia and Kenya in 2017,as well as many other zones becoming drier. Reduced rainfall in Canada resulted in a huge forest fire in May 2016.Volcanic eruptions and earthquakes have always been a threat.
大规模的环境灾难
专家们预测（情况）会变得更糟。
变得越来越普遍
导致了一场巨大的森林火灾
In 2016,there were three volcanic eruptions at almost the same time in Indonesia. There have been serious earthquakes in many parts of Asia, Europe and South America. A massive earthquake hit central Italy in August 2016, killing at least 247 people.
So why is nature beginning to turn on us One answer is overpopulation. The population of the world is growing at the rate of 10,000 people an hour, nearly 90 million a year. Most of the growth is in the developing world. Poor people in agricultural areas often move to the cities. They build homes from whatever materials they can find. These homes can easily collapse during earthquakes or slip and slide downhill in landslides, especially after heavy rain. On top of that, there is the added aspect of global warming.
那么，大自然为什么开始报复我们呢？
一个原因是
人口过剩。
农业地区
除此之外，还有全球变暖这一额外的因素。
以…的速度
This has mainly been caused by the huge amounts of carbon dioxide produced by factories and vehicles. The destruction of the world's forests plays a part, too. As a result, a hotter ocean causes stronger winds. Atlantic hurricanes are 40% stronger now than they were 30 years ago.
Landslides and earthquakes are even more dangerous now than in the past because around half of the world's population now live in cities. Many people in cities and towns in South America and Asia are at risk from landslides. In April 2017, the city of Mocoa in Colombia was hit by a landslide, leaving many dead and injured. A great number of people live at risk from earthquakes too. These have claimed more than 1.6 million lives in the last hundred years.
也有大量的人生活在地震的风险中。
在过去的一百年里，地震已经夺去了 160 多万人的生命。
大量的
起作用
大西洋飓风
近半成
被袭击（遭遇）
Most disaster experts believe that things could get a lot worse. Professor Hou Ming of Peking University studies volcanoes. He warns that the world has not seen the worst yet. The worst eruption in human history was probably Mt Tambora in 1815, in Indonesia. Dust from the volcano rolled across the Earth's skies. There was no summer in Europe and America the following year. But evidence shows that 73,000 years ago there was a much greater eruption." It reduced temperatures by maybe 6℃ in some places, and the whole planet was sent into winter for years. And there are about two of these events every 100,000 years..."
变得更糟
使温度降低…… 幅度
陷入了长达数年的冬季
Storms have been getting worse everywhere too, with more hurricanes hitting the US and Central America.
各地的暴风雨也越来越严重，更多飓风将袭击美国和中美洲。
介宾复合结构：介词with+名词+现在分词，在句中作伴随状语
e.g. *He fell asleep at the desk with his radio still working beside him.
*With the temperature rising so fast, all the ice in the polar areas will soon melt.
1) “with+名词/代词+现在分词”
现在分词所表示动作的发出者为前面的名词/代词, 通常表示这个动作正在进行。
2) “with+名词/代词＋动词不定式”
动词不定式所表示的动作发出者为前面的名词/代词发,通常表示这个动作还没有发生。
e.g. *With a lot of work to do, he was not allowed to go out.
*With a lot of things to buy, she had to ask her husband to go to the supermarket with her.
3) “with+名词/代词+过去分词”
过去分词所表示动作的承受者为前面的名词/代词。
e.g. *A young man was brought in with his hands tied behind.
*With his key locked in the house, she had to wait for her husband at the door.
4) “with+名词/代词+介词短语”
在句中常用作伴随状语或方式状语。
e.g. *The teacher came into the classroom with some books in his hand.
*The soldiers marched to the front, with guns on their shoulders.
5) “with+名词/代词+副词”
副词主要是由介词转化而来的副词，如on, in, over, out, up, down, off, away等。
e.g. *He fell asleep with the light still on in his room.
*He had to go to bed with the last TV play over.
6) “with+名词/代词+形容词”
形容词表示前面名词/代词所处的状态。
e.g. *The little boy came back with his hands red and cold.
*In hot summer days many people will sleep with the window open.
【语境应用】单句语法填空。
1) With his foot ________ (bite) by the snake, the old man
beat it to death.
2) With the woman ________ (lead) the way, we had no
trouble finding Smith’s house.
3) With so much homework ________ (do), the boy stayed up
late into the night.
4) You’d better sleep with the window ________ (open) so as to
let in fresh air.
5) A middle-aged woman came into the doctor’s office ________
a baby in her arms.
bitten
with
to do
open
leading
完成句子。
6) The woman walked on ____________________________ (孩
子在她的怀里哭)．
7) ____________________________________________ (周围有
那么多的蚊子围着她飞来飞去), she couldn’t fall asleep the
whole night.
with her baby crying in her arms
With so many flies flying up and down around her
8) ___________________________ (由于还有许多的问题要解
决), the meeting may last another hour.
9) ________________________ (由于还有一些额外的工作要
做), the workers are not allowed to leave.
With so many problems to settle
With some extra work to do
Write a short passage in 80 words to express your attitude towards the future and things we need to do to protect the environment.