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高一外研版英语课件Learningaims1.Learnabouttheoriginanddevelopmentoflifeonearth.2.Masterthenewwordsandexpressionsinthereadingpassage.课前预习FindoutsomeknowledgeaboutastronomybeforeclassWarmingUpThinkaboutthesequestionsandthendiscussthemwithyourpartner.1.Inoursolarsystemeightplanetscirclearoundthesun.Whatarethey?Canyoumatchthenameswiththeplanets?(picturesonpage25)2.Whatinterestsyouinastronomy?Doyouknowanyquestionsthatastronomersareinterestedin?课堂阅读Task1.Pre-reading1.Theoriginoflifeonearthisaquestionthatinterestsastronomers.Whatdoyouknowaboutit?2.Earthreligionandculturehasitsownideasabouthowlifebeganontheearth.Whatdoyouknow?3.Readthetitleandlookatthepictures.Predictwhatthereadingwillbeabout.Thenreaditquicklytocheckifyouareright.Task2.SkimmingSkimoverthepassageandfindthemainideaofeachparagraph.(Matchthemainideaofeachparagraph.)Paragraph1: a.TheimportanceofwaterforlifeParagraph2: b.ThedevelopmentofplantsandanimalsontheearthParagraph3: c.TheformationoftheearthParagraph4: d.AwidelyacceptedtheoryabouttheformationoftheuniverseParagraph5: e.ThearrivalofhumansandtheirimpactontheearthTask3.SkippingPuttheorderofdevelopmentoflifeintoatimeline.1.Insectsandamphibiansappeared. 2.Dinosaursappeared.3.Theearthbecameasolidball. 4.Smallplantsgrewonthewater.5.Reptilesappeared. 6.Plantsbegantogrowondryland.7.Theearthwasacloudofdust 8.Waterappearedontheearth9.Shellfishandotherfishappeared. 10.Theuniversebeganwitha“BigBang”.11.Cleveranimalswithhandsandfeetappeared 12.Mammalsappeared.Task4.DetailedreadingPara1:1.Howdidtheearthbegin?Para2:1.Whatappearedafterthe‘BigBang”?2.Whatismoreimportant?Para3:1.Whywastheearthdifferentfromtheotherplanets?Para4:1.Whydidt