课件35张PPT。Lesson 3 Unnatural DisastersLook at the following pictures and what are happening in the pictures? earthquakesdroughts tsunami floods volcanic eruptions hurricanes forest fires typhoonlandslides What do you think causes the disasters, people or nature?Discussion unnatural 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, floods and droughts ? Overpopulation and mismanagement of the world’s resources.4. Why are volcanoes and earthquakes more dangerous now ? Because half the world’s population lives in cities within range of volcanic eruptions and earthquakes. 5. What could be the biggest threat to the planet in the future? A volcanic eruption. 6. What effects might this threat have? It might plunge the planet into winter for years.Fill in the blanks about the text.In the last ___ years , there are more and more disasters such as _____ , _____, windstorms, earthquakes, _____, volcanic _____and _____ fires all over the world. Why are so many disasters ? One of the reasons is over- _____. ten floodsdroughtstyphoons eruptions forest population__ addition, _____ change and the spectre of global _____ caused by the mismanagement of the world’s resources can lead to the disasters or make them worse. Inclimate warmingAt present, volcanoes and earthquakes are more _____ with the fast _____ of people . Earthquakes take the lives of 1.6 million People in the last hundred years. What is worse, the disaster professionals predict that the things will get _____.dangerous growthworse Language Points Important phrases1. on record 2. result in 3. wipe out 4. turn on 5. at the rate of 6. quantities of 7. for instance 记载下来的，有记录的产生。。。结果，导致 区别于 result from消除，毁灭打开，攻击，袭击以…速度 at the speed of大量 a quantity of for example 8. within the range of 9. at risk 10. in some degree 11. plunge into 12. on top of …在…范围内有危险，冒险在某种程度上说使陷入，遭受。。。in additionWith 的复合结构: with +n./pron. + adj./ adv./prep phrases /n /doing / done /to do with + object + object complement With 的复合结构在句子中可以做伴随状语,也可以做原因状语和后置定语 e.g. He walked along with his head down/ with his face red He is waiting for you with a magazine in his hand. With you monitor in my class, I will be in charge of the class easily.With nothing to do, I will go to the cinema . With his work finished, he went back home. He lay there, with his eyes looking at the sky. Who lives in the room with the light on?(1) 他站在那里,手被帮在一棵树上。 He stood there, with his hands tied to a tree. (2) 他头高昂着走了进来. He came in with his head high.wipe out: (1) get rid of / remove: 清除, 除去 e.g. Wipe out these unhappy things between you and her . (2) destroy completely : 毁灭, 消灭 e.g. At last, the army led by Mao Zedong wiped out the enemies . A dise ... ...
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