学习内容Unit4Astronomy:thescienceofthestars1.Learningabilitygoals学能目标EnableSslearnhowtotalkaboutthebeginningoflifeontheearth.2.Abilitygoals能力目标a.EnableSstotalkaboutthescienceofthestars,thedevelopmentoflifeandspacetravelandgravityWheredowecomefrom?Howdidtheuniversebegin?Whyistheuniversethewayitwas?Howwillitend?Howmuchdoyouknowaboutuniverse?Doyouwanttohaveaspacetravel?Doyouknowsomethingaboutgravity?b.Understandthetextandanswerthefollowingquestions:Whatwasthereontheearthbeforelifecouldbegin?Whydoscientiststhinktherehasneverbeenlifeonthemoon?Whydidanimalsfirstappearintheseas?Whydidgreenplantshelplifetodevelop?Whyweremammalsdifferentfromotheranimals?c.EnabletheSstounderstandthedetailsaboutthepassage,choosingthecorrectansweraccordingtothetextandputtheorderofdevelopmentoflifeintoatimelineandanswerquestions.3.Teachingmethods教学方法SkimmingandscanningAsking-and-answeringactivitytochecktheSs’understandingofthetext.Individual,pairorgroupworktofinisheachtask.Discussion.【课前预习案】【自主学习】-------学前热身Step1.BesidesEarth,howmanyplanetsarethereintheSolarSystem?具体要求--------ThePlanetisnamedaftertheRomangodofwar.It's查阅书籍distinctiverustcolorisred.Itssurfacefeaturesmanymountains,canyonsand或上网查evenpolaricecapsthatlookalotlikethosehereonEarth.Wearedoing阅八大行someresearchtofindoutwhetherthereislifeformsonit.星的中英--------Sinceithasnoprotectiveatmosphere,thetemperature文名字onthesurfacerangesfromextremelyhotonthesidefacingtheSuntoextremelycoldonthesidethatfacesawayfromtheSun.ItistheclosestplanettotheSun.--------ItisnamedaftertheRomangoddessofloveandbeauty,butthesurfaceisaveryunpleasantplacefeaturingveryhightemperatures,windsthatblowhundredsofmilesperhourandanatmosphereofsulfuricacid.---------Ithasatleastsixty-onemoonsandfeaturestheGreatRedSpot,whichisahuge"storm"thathasbeenobservedfromhereonEarthforoverthreehundredyears.Itisthelargestplanetinoursolarsystem.----------Ithasafascinatingsystemofrings.Ithassomanymoonsthatitislikeaminiaturesolarsystem.-----------Itisoneofthegiantgasplanetsinthesolarsystem.Ithasaveryfaintringsystemthatwedidn'tknowexisteduntiltheplanetwasvisitedbytheVoyagerspacecraft.------------ItwasthelaststoptheVoyagermissionmadebeforeifleftoursolarsystem.Ithaswindsthatblowhundredsofmilesperhourandamoonthatfeatures"geysers"ofnitrogenthateruptandleavedarkmarksonthesurface.Step2.单词识记1._____________n.天文学家11.religionn.___________________2._____________pron，n.&adj.十亿12.theoryn.___________________学法指导3._____________adj.猛烈的，强暴的13.globen.___________________小组合作4._____________n.大气层；气氛14.fundamentaladj.________________熟记单词5._____________n.恐龙15.multiplyv.________________6._____________adv.因此；于是16.oxygenn.________________7._____________n.卫星；人造卫星17.gravityn.________________8._____________n.气候18.extinctadj.________________9._____________n.宇宙飞船19.crashv.________________10.____________v.减少，减轻20.cabinn.________________【课堂探究案】ReadingComprehensionStep1.FastreadingMatchthemainideaofeachparagraph.Paragraph1:ThearrivalofhumansandtheirimpactontheearthParagraph2:TheimportanceofwaterforlifeParagraph3:ThedevelopmentofplantsandanimalsontheearthParagraph4:TheformationoftheearthParagraph5:AwidelyacceptedtheoryabouttheformationoftheuniverseTrueorfalse1.Accordingtoawidelyacceptedtheory,theuniversebeganwitha“Bi...
