unitlessonNaturaldisasterPPT課件

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

2、EruptionTyphoon/HurricanesTsunamiForest FiresDroughtLandslide The 7.0 magnitude strong earthquake, happened in Sichuan Lushan on April 20th, has been touching the whole Chineses hearts.It was on a grand scale. Thousands of people lost their wives, children The separation from their families made the

3、m 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. L

4、ushan earthquakeVocabulary 1.grand adj big and very impressive巨大的 2.scale n the size or level of sth規(guī)模，大小 3.separation n the condition of being separated分離，分開. 4.rough adj unpleasant or difficult艱難的 5.mountainous adj having many mountains多山的 6.slip v fall off 滑落 7.slide v to move smoothly over a sur

5、face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 破爛的 10.construct v build 建造Nature is turning on usTask1:Summary main idea of each paragraphTask2:Complete the gaps in the text with sentencesTask3: Practise and Expanding Task 1

6、:Reading Main idea : Natural disasters are getting worse because of human activities. Examples show natural disasters become common An example of volcanic eruption & earthquake show their threat to our world. Causes of natural disastersUrbanization &industrialization Overpopulation in cities makes m

7、ore people in the danger of natural disasters Experts predict that natural disasters will get worsePara 1:Para 2:Para 3:Para 4:Para 5: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? Certa

8、in 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 sen

9、tences 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

10、 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.

11、(1)_ Storms have been getting worse everywhere too, with a growing number of hurricanes hitting the US, and Central America.b 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 already been

12、in armed conflict over water, and reduced rainfall in the west of the US has resulted in huge forest fires.fParagraph 3 So why is nature beginning to turn on us? (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 gr

13、owth in the developing world.g 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 been caused by the huge amounts of carbon dioxide produced by factories and vehicles,and the destruction o

14、f the worlds forests.eParagraph 5The worst eruption in human history was probably Mt Tambora in 1815,in Indonesia.Dust from the volcano rolled across the earths skies and pretty much cancelled the following summer in Europe and America.(5)_ “It reduced temperatures by maybe 6 in some places and the

15、whole planet was sent into winter for years. And there are about two of these events every 100,000 years”aPart IIIStructure Analysis1. This catastrophe is still very fresh in the minds of people worldwide who have not yet got over their separation from loved ones lost in the tsunami.譯文：譯文： 在世界各地許多人的

16、心目中, 那場災(zāi)難仍然記憶尤新。他們還沒有從海嘯中喪失親人的打擊中恢復(fù)過來。Task 3: Text summary Fill in the blanks about the text.In the last _ years , there are more and more disasters such as _ , _, thunderstorms, earthquakes, _, volcanic _and _ fires all over the world. Why are so many disasters ? One of the reasons is over- _. ten

17、floodstsunamistyphoons eruptions forest population_ addition, _ change and global _ caused by factories, vehicles and deforestation can lead _ the disasters or make them worse. At present, volcanoes and earthquakes are more _ with the fast _ of people . Inclimate warmingtodangerous growthEarthquakes

18、 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 Read the text again and answer these questions. 1. What is the attitude of the journalist towards the future ? Pessimistic. 2. Who are most likely to be the victims of natural disasters? Poor people.3. Why are there now more hurricanes,