普通高中課程標(biāo)準(zhǔn)實(shí)驗(yàn)教科書(shū)—英語(yǔ)必修三[外研版]practisingplanModuleFourSandstormsinAsiaPeriod5Speaking—Puttingthetextintoadialogue■GoalsTopracticespeakingEnglish■ProceduresStep1:ReadingaloudtothetapeYouaregoingtoreadaloudthetexttothetape.Whilereadingaloudpayenoughattentiontothepronunciation,stress,pausesandintonationbythenativespeaker.Step2:PuttingthetextintoadialogueYouaretoputthetextWhatIsaTornado?…intoadialogueandthenactitoutinpairsA:Whatisatornado?B:Atornadoisarotatingcolumnofairfromathunderstormtotheground.A:Howviolentisit?B:Themostviolenthavewindsofmorethan400kilometersperhour.A:Wheredotheyoccur?B:AlmostallofthemoccurintheUS.A:Whichpartofit?B:TheycomeintheareafromTexasinthesoutheasttoSouthDakotainthenorth.A:Howstrongisatornado?B:Tornadoescanpickupcars,trainsandevenhousesandputthemdowninthenextstreetoreveninthenexttown.A:Howterribletheyare!B:Theycanbemoreterrible.Theycantakethefuroffthebackofacatandthefeathersoffachicken.Theycandestroyhouses,butleavethefurnitureinsideexactlywhereitwas.A:Thentheyarestrange,too.Bythewayhowmanytornadoesarethereinayear?B:Onaverage,thereare800tornadoesintheUSeachyear.A:Arethereanydeathscausedbythem?B:Yes,thereare.A:Theycauseabout80deathsand1,500injuries.B:Whatistheworsttornado?A:Theworsttornadoofalltimeoccurredin1925.ItaffectedthreeUSstates:Missouri,IllinoisandIndiana.B:Howmanydeathsdiditbringtotheplaces?A:Bythetimeitended,morethan700peoplehadbeenkilledand2,700hadbeeninjured.A:Whatisahurricane?B:Hurricanesarestrongtropicalstorms.A:Wheredotheyoccur?B:TheyusuallyoccurinthesouthernAtlanticOcean,theCaribbeanSeaandtheGulfofMexico.A:Theyarestrongwinds,aren’tthey?B:Yes,theyare.Theyareviolentwindsof120kilometersperhourormore.A:Howharmfularethey?B:Theycausehugewaves,heavyrainandfloods.A:Howoftendotheycome?B:ThereareonaveragesixAtlantichurricaneseachyear.A:Whatplacesareaffected?B:TheeastcoastoftheUSfromTexastoMaineisusuallyaffected.A:Whenwastheworsthurricane?B:Theworsthurricanedisasterofalltimeoccurredonthe8thSeptember1900inGalveston,A:Howstrongwasit?B:Windsof200kilometersperhourandfive-meterhighwaveshitthecity.A:Itmusthavecausedmanydeaths.B:Thedisasterkilled6,000peopleinapopulationof37,000anddestroyed3,600buildings.Step3:PuttingthetextEarthquakesAroundthePacificintoadialogueA:Iamtoldthatabout400earthquakesoccurworldwideeveryday,morethanahundredthousandinayear.B:WhataboutChina?A:Chinaissituatedinoneofthemostactiveearthquakeregionsintheworld.B:ThatiswhytherehavebeenmanyterribleearthquakesinChina.WhatisthemostseriousearthquakeinChian?A:ThemostseriousoftheseoccurredinHuaCountyinShaanxiB:Howmanyprovinceswereaffected?A:EightprovincesinCentralChinawereaffected.Itcoveredanareaof800squarekilometers.B:Whataboutthedeaths?A:Insomecommunities,60percentofthepopulationwaskilled.Inall,830,000peoplelosttheirlives.B:IstheUSacountrytroubledwithearthquakes?A:Yes,itis.B:TellmemoreaboutearthquakesintheUS,willyou?A:TheCaliforniaEarthquakeofthe18thofApril1906istheworstearthquakethathaseverhappenedintheUnitedStates.B:Diditoccurinthedaytime?A:Ittookplaceat5:15am,andlastedforonlyaminute.B:Whataboutthenaturaldisaster?A:Itcausedtheworstnaturaldisasterinthenation’shistory.B:Theearthquakebringsfires,too.A:Youareright.FirescausedbytheCaliforniaEarthquakedidthemostdamage.B:Howlongdidthefireslast?A:Thefiresburnedforthreedays,destroyingatotalof25,000buildings.B:Howmanydeathswerecausedbytheearthquakeandthefires?A:About500peoplewerekilledinthecityofSanFranciscoand250,000weremadehomeless.B:ImeanthewholeofCalifornia.A:InthewholeofCalifornia,theearthquakeandfirescausedabout3,000deaths.B:Howareearthquakescaused?Whydotheyhappen?A:The1960earthquakewascausedbyamovementontheSa