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unit22 lesson 3 Natural disaster


Unit 22 Environmental Protection Lesson 3 Natural Disasters

Teaching objectives
? In this lesson, we will: ? 1. practice reading strategies to complete texts with sentence ga

ps. ? 2. talk about disasters with the help of the learnt vocabulary about natural disasters.

? Besides earthquake, there are many natural disasters, can you name some?

Earthquake Landslide Flood

Drought

Thunderstorm

Natural disasters
Volcanic Eruption

Forest fire

Tsunami

Typhoon

Flood

Thunderstorm

Volcanic Eruption

Typhoon/Hurricanes

Tsunami

Forest Fires

Drought

Landslide

Lushan earthquake
? The 7.0 magnitude strong earthquake, happened in Sichuan Lushan on April 20th, has been touching the whole Chinese’s hearts.It was on a grand scale. Thousands of people lost their wives, children… The separation from their families made them live a rough (or hard) time. ? During the quake, houses fell down. In the mountainous area stones, bricks slip and slide downhill in the landslides. People lived in shabby houses or tents. However Sichuanese are very strong. With the help of the whole nation, they are constructing their homes now.

Vocabulary
? ? ? ? ? ? ? ? ? ? ? 1.grand adj big and very impressive巨大的 2.scale n the size or level of sth规模,大小 3.separation n the condition of being separated分离,分开. 4.rough adj unpleasant or difficult艰难的 5.mountainous adj having many mountains多山的 6.slip v fall off 滑落 7.slide v to move smoothly over a surface滑行 8.landslide n sudden fall of a lot of earth or rocks down a hill, cliff 滑坡,山崩 9.shabby adj old and in bad condition 破烂的 10.construct v build 建造

Nature is turning on us
Task1:Summary main idea of each paragraph Task2:Complete the gaps in the text with sentences Task3: Practise and Expanding

Task 1:Reading
? Main idea : ? Natural disasters are getting worse because of human activities.

? ?

Para 1: Para 2:

?

Para 3:

?
?

Para 4:
Para 5:

? Examples show natural disasters become common ? An example of volcanic eruption & earthquake show their threat to our world. ? Causes of natural disasters— Urbanization &industrialization ? Overpopulation in cities makes more people in the danger of natural disasters ? Experts predict that natural disasters will get worse

Reading strategies
? Read the sentences before and after the gap and look for clues about the missing sentence.

? e.g. is it an example of what is mentioned before? ?

? Certain words may help you: time references (then). pronoun references (it, that), linking words (however).

? Decide which sentence goes in the gap. check that it fits the sentences before and after it.

Use the strategies to complete the gaps in the text(1-5) with these sentence(a-g),There are two extra sentences you do not need. ? A) But evidence shows that 73,000 years ago there was a much greater eruption. ? B) Even Europe has suffered and large areas have been underwater. ? C) This is probably not the most important factor either. ? D) Third, the other bits of land you might have been able to farm are now useless. ? E) On top of that add global warming. ? F) For example, the yellow river, once famous for flooding, failed to reach the sea at all for 226 days in 1997. ? G) One answer is overpopulation.

Task 2: Complete the text
? Paragraph1 ? There has been terrible flooding in Asia, Africa, America and Oceania.(1)____ b Storms have been getting worse everywhere too, with a growing number of hurricanes hitting the US, and Central America.

? Reduced rainfall has affected large areas of Africa for years leaving irrigation canals dry and many other zones are becoming drier.(2)___A number of nations have f already been in armed conflict over water, and reduced rainfall in the west of the US has resulted in huge forest fires.

Paragraph 3
? So why is nature beginning to turn on us? g (3)____ The population of the world is growing at the disturbing rate of 10,000 people an hour, nearly 90 million a year, with most of the growth in the developing world.

? These homes,seldom made of bricks,can easliy fall down in earthquakes or slip and slide downhill in landslides,especially in mountainous areas.(4)___This has mainly e been caused by the huge amounts of carbon dioxide produced by factories and vehicles,and the destruction of the world’s forests.

Paragraph 5
? The worst eruption in human history was probably Mt Tambora in 1815,in Indonesia.Dust from the volcano rolled across the earth’s skies and pretty much cancelled the following summer in Europe and America.(5)___ “It reduced a 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……”

Task 3: Text summary Fill in the blanks about the text.
ten In the last ___ years , there are more and more floods tsunamis disasters such as _____ , ________, typhoons thunderstorms, earthquakes, ________, volcanic _________and forest fires all over _____ eruptions the world. Why are so many disasters ? One population of the reasons is over- __________.

__ In addition, ______ change and global climate warming caused by factories, vehicles and ________ to deforestation can lead ___ the disasters or

make them worse. At present, volcanoes and
earthquakes are more _________ with the dangerous fastgrowth of people . ______

Earthquakes take the lives of 1.6 million

people in the last hundred years. What
is worse, the disaster experts predict

that the things will get _____. worse

Homework
1. Read the passage at least twice. 2. Finish the exercises 5&6 (P11). 3. Work in pairs(2-4).Discuss what can we do to improve the environment and help victims of natural disasters?Please list your suggestions.

谢谢观赏
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