2019-2020年高二英语Unit10自然灾害教案 苏教版

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1、2019-2020年高二英语Unit10自然灾害教案苏教版【Part1BackgroundKnowledge背景知识】TropicalcyclonesareknownastyphooninthewesternPacificandashurricaneintheAtlantic.Thesestormsmostoftendevelopinthelateraummerandautumnoverjustnorthandsouthoftheequator.IntheAtlanticoceanthereare

2、usuallyaboutsixhurricanesandtensmallertropicalstormseachyear.Butthereisnowaytoknowforsurehowmanystormswillhappeneachyearandhowseveretheywillbe.IntheUnitedStates,expertsatthegovernmentagency,theNationlaHurricaneCenternearMiamiWatchforthedevelopmentofse

3、vereweatherandwarnpeopleaboutthestorms.TheNationalHurricaneCenterdependsmainlyonmodernsatellitestoobservedevelopingstorms.ItalsousesinformationcollectedbypassengerairplanesandshipsandbyAmericangovernmentairplanes.Satellitepicturesgivethescientistsagre

4、atideaaboutweatherinalargearea.Scientistsuselputerstoincreasethesizeofpicturesthatshowadevelopingstorm.Theystudythesepicturestolearnmoreaboutthestorm’sdirectionandspeed.TheNationalHarricaneCenter’sadivisoriesareconcernedmainlywithshipsintheoceanwhilea

5、stormismovingoverthewater.Butthecenter’sexpertsaremostfamousfortheirworkwhenahurricanebeginsmovingtowardsland.AtfirsttheNationalHurricaneCentermakespublicweatheradvisorieseverysixhours.Butasastormgetsclosertoland,theweatherwarningsaremadeeverythreehou

6、rs.Expertsatthecenterareondutytwenty-fourhourseachdaytoprovidenewwarnings.【Part2KeyLanguagePoints重点难点】1．动词observe的用法▲observe在本课中意为“观察”“注意到”，后面跟名词、名词性从句或复合宾语。如：(1)Asachild,helikedtoobservethebehaviorofbirds.在童年时代，他喜欢观察鸟的习性。(2)Iobservedthatthewasverypal

7、eandaskedhimwhatwasthematterwithhim.我发现他脸色苍白，问他哪里不舒服。(3)Ihaveneverobservedhimdootherwise.我从未看到过他有另外的做法。(4)Thedetectiveobservedthemantryingtoforcethedooropen.侦探看到那个人想强行打开门。▲observe可作“评论”“说……”解释。如：(5)“Badweather,”thecaptainobserved.“坏天气”，船长说道。(6)Heobser

8、vedtomethatourworkwasverywelldone.他对我说我们的工作完成得很好。(7)Ihavelittletoobserveonwhathasbeensaid.对所谈的这些，我提不出什么意见。(8)Heobservedthattheweathermightcontinuedryforsometime.他说这干旱的天气可能还要延续一段时间。▲observe还有“遵守”“庆祝”“纪念”之意。如：(9)Theserulesmustbestrictlyobserved.