高中英语 unit22 lesson3 natural disasters课件 北师大选修8.ppt

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1、Lesson 3 Natural Disasters2021/8/11 星期三1Look at the following pictures Look at the following pictures and what are happening in the and what are happening in the pictures?pictures?2021/8/11 星期三2 earthquakes2021/8/11 星期三3droughts 2021/8/11 星期三4tsunami 2021/8/11 星期三5floods 2021/8/11 星期三6volcanic erupt

2、ions 2021/8/11 星期三7hurricanes 2021/8/11 星期三8forest fires 2021/8/11 星期三9typhoon2021/8/11 星期三10landslides 2021/8/11 星期三11What do you think causes the disasters,people or nature?Discussion unnatural2021/8/11 星期三12Read the text again and answer these questions:1.What is the attitude of the journalist to

3、wards the future?Pessimistic.2.Who are most likely to be the victims of natural disasters?Poor people.2021/8/11 星期三133.Why are there now more hurricanes,floods and droughts?Overpopulation and mismanagement of the worlds resources.2021/8/11 星期三144.Why are volcanoes and earthquakes more dangerous now?

4、Because half the worlds 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.2021/8/11 星期三156.What effects might this threat have?It might plunge the planet into winter for years.2021/8/11 星期三

5、16Fill 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 population2021/8/11 星期三17_ additi

6、on,_ change and the spectre of global _ caused by the mismanagement of the worlds resources can lead to the disasters or make them worse.Inclimate warming2021/8/11 星期三18At present,volcanoes and earthquakes are more _ with the fast _ of people.Earthquakes take the lives of 1.6 millionPeople in the la

7、st hundred years.What is worse,the disaster professionals predict that the things will get _.dangerous growthworse 2021/8/11 星期三19Language Points Language Points 2021/8/11 星期三20Important phrases1.on record 2.result in 3.wipe out 4.turn on5.at the rate of 6.quantities of7.for instance 记载下来的，有记录的记载下来的

8、，有记录的产生。结果，导致产生。结果，导致 区别于区别于 result from消除，毁灭消除，毁灭打开，攻击，袭击打开，攻击，袭击以以速度速度 at the speed of大量大量 a quantity of for example 2021/8/11 星期三218.within the range of 9.at risk10.in some degree11.plunge into12.on top of 在在范围内范围内有危险，冒险有危险，冒险在某种程度上说在某种程度上说使陷入，遭受。使陷入，遭受。in addition2021/8/11 星期三22With 的复合结构的复合结构:w

9、ith+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的复合结构在句子中可以做伴随伴随状语状语,也可以做也可以做原因状语原因状语和和后置定语后置定语 2021/8/11 星期三23e.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

10、,I will be in charge of the class easily.2021/8/11 星期三24With 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?2021/8/11 星期三25(1)他站在那里他站在那里,手被帮在一棵树上。手被帮在一棵树上。He stood there,with his han

11、ds tied to a tree.(2)他头高昂着走了进来他头高昂着走了进来.He came in with his head high.2021/8/11 星期三26wipe out:(1)get rid of/remove:清除清除,除去除去e.g.Wipe out these unhappy things between you and her.(2)destroy completely:毁灭毁灭,消灭消灭e.g.At last,the army led by Mao Zedong wiped out the enemies.A disease almost wiped out the

12、 population of the island.2021/8/11 星期三27risk:vt./n.冒险冒险e.g.You are to take risks to get what you want,but you must not risk your life!at risk 处于危险之中处于危险之中,作表语或者状语作表语或者状语2021/8/11 星期三28at/take/run the risk of 冒冒的危险的危险He saved my life at the risk of losing his own.They were ready to run/take the risk

13、 of being taken prisoner by the enemy.2021/8/11 星期三29risk it:冒风险试试冒风险试试 I dont dare to risk it,its too dangerous.2021/8/11 星期三30plunge:vt./vi.投入投入(某物某物)使陷入使陷入;突入突入 Dont plunge your hand into cold water.What plunged the country into the war?2021/8/11 星期三31result in:have as a consequence 造成造成的结果的结果,导致

14、导致e.g.It is their carelessness that resulted in the accident.result from 是由。造成的是由。造成的 e.g.It all resulted from jealousy.2021/8/11 星期三321.After the storm they had to _.2.Many people in the developing world suffer from diseases because they are _.3.Our team was knocked out in the _ of the competition.

15、rebuild undernourishedsemi-final Exercise 6Complete the sentences with words from the above exercise in a suitable form.2021/8/11 星期三334.The bomb was about to go off but the experts managed to _it.5.I _ the question and failed the exam.6.I _ yesterday and arrived an hour late for class.defusemisunderstood overslept 2021/8/11 星期三347.A lot of houses collapsed in the earthquake because of _ construction.8.Floods are not _ these days;they happen more and more often.sub-standardunusual 2021/8/11 星期三352021/8/11 星期三36