1、The Violence of Naturereading and writingflooda lot of water in an area which is usually drythunderstorma lot of rain falling quickly,with loud noises and flashes of lighta lot of rain falling quickly,with loud noises and flashes of lightlightingA flash of light which happens during a thunderstormA
2、flash of light which happens during a thunderstormhurricanea very strong wind or stormtornado a column of air that turns very quickly a column of air that turns very quicklyTask 1According to the writing style of the passage,the purpose of it is to _A.tell a story B.present an opinionC.introduce a t
3、hing D.report a piece of newsWhat is a tornado?What is a tornado?Where does it occur?Where does it occur?How strong is it?How strong is it?How often does it happen?How often does it happen?W h e n d i d t h e w o r s t W h e n d i d t h e w o r s t tornado occur?tornado occur?W h e r e d i d t h e w
4、 o r s t W h e r e d i d t h e w o r s t tornado occur?tornado occur?What are the influence of What are the influence of the worst tornado?the worst tornado?Information about TornadoesInformation about Tornadoesa rotating column of aira rotating column of airin the USin the USmore than 400km per hou
5、rmore than 400km per hour800 each year800 each year19251925Missouri Illinois IndianaMissouri Illinois Indiana700 deaths 2700 injured700 deaths 2700 injuredDefinitionDefinitionPlacePlacePowerPowerFrequencyFrequencyA typical exampleA typical exampleIntroduce a natural disasterIntroduce a natural disas
6、terTask 2Find out the words to describe a natural disasterNouns:Verbs:Adjectives:Phrases:1.Winds of 200 kilometers _(每小时)and five-meter-high waves hit the city.2.There are _(平均地)six Atlantic hurricanes each year and they usually _(影响)the east coast of the US from Texas to Maine.3.Hurricanes are stro
7、ng tropical storms,and they usually _(发生)in the southern Atlantic Ocean,the Caribbean Sea and the Gulf of Mexico.per hourper houron averageon averageaffectaffectoccuroccurTask 34.The disaster _(杀死)6,000 people in a population of 37,000 and _(摧毁)3,600 buildings.5.There are_(猛烈的)winds of 120 kilometer
8、s per hour or more,which _(造成)huge waves,heavy rain and floods.6.The worst hurricane disaster of all time _(发生)on the 8th September 1900 in Galveston,Texas.killedkilleddestroyeddestroyedviolentviolentcausecauseoccuroccurTask 3a tidal wave/tsunamia tidal wave/tsunamicausecauseunderunderwater earthwat
9、er earthquakequakespeedspeed800 km/hour800 km/hourfrequencyfrequencyevery 6 or 7 yearsevery 6 or 7 yearsplaceplacethe the Pacific and Indian Pacific and Indian OceanOceanthe worst tsunamithe worst tsunamiDec.26th.2004Dec.26th.2004Southeast AsiaSoutheast Asia290,000 deaths290,000 deathstsunamitsunami
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