高中英语 Unit5《The Power of nature》学案3 新人教版选修6.doc

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1、Unit5ThePowerofNature知识网络图语言探究类别新课标要求掌握的项目话题Talkaboutnaturaldiasters重点单词Diaster;bored;boring;bore;effort;volcano;volcanologist;volcanology;consider;bore;risk;vary;warn;absolute;reserve;crystal;swallowguarantee;erupt;impressive重点短语burntotheground;makeone’sway;beenthusiastic(about);ma

2、keanefforttodosth;atrisk;givebirthto;comparewith;takesb.bysurprise;unfortunately;amazed;fantastic重点句型1.Haveyoueverconsideredhowweakhumansarecomparedwithavolcano,hurricaneorearthquake?2.Sometimesworkingindoors…,I’mneverbored.3.Manyhouseshavebeencoveredwithlavaorburnttotheground.4.Wes

3、lowlymadeourwaytotheedgeofthecrater.5.Today,IamjustasenthusiasticaboutmyjobasthedayIfirststarted.6.Shemadeanefforttobenicetoherboss.7.Havingcollectedandevaluatedtheinformation,Ihelpotherscientiststopredictwherelavafromthevolcanowillflownextandhowfastitwillflow.语法V-ing形式作状语作文writeaco

4、mpositiononnaturaldisasters.学能目标Learnsomeinformationaboutnaturaldisasters.Knowhowtouse–ingformasadveribal.技能目标Learnabouttheusageof–ingformasadveribal.自主探究About100yearsago,peopleworldwidebeganburningmorecoalandoilforhomes,factories,andtransportation.Burningthesefossilfuelsreeasescarb

5、ondioxideandothergreenhousegasesintotheatmosphere.TheseaddedgreenhousesgasseshavecausedEarthtowarmmorequicklythanithasinthepast.Howmuchwarminghashappened?Scientistsfromaroundtheworldtellusthatduringthepast100years,theaverageglobalairtemperaturehasrisenmorethan0.6°C(1.0°F).Thismaynot

6、soundlikeverymuchchange,butevenonedegreecanaffecttheEarth.Belowaresomeeffectsofclimatechangethatweseehappeningnow.·Sealevelisrising.Duringthe20thcentury,sealevelrose10-20cm(4-8inches)duetomeltingglaciericeandexpansionofwarmerseawater.Inthe2用心爱心专心next100years,sealevelmayriseasmuchas8

7、5cm(33inches).Thisisathreattopeoplelivingnearthecoast,wetlands,andcoralreefs.·Arcticseaiceismelting.ThesummerthicknessofArcticicebergsisabouthalfofwhatitwas50yearsago.Thismeltingicemaysomedaycausechangesintheworld’soceancurrents.·Sea-surfacetemperaturesarewarming.Someanimals,suchasc

8、orals,cannotliveinw