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1、Unit4Astronomy:thescienceofthestarsThesecondperiodWarmingup,Pre-reading,Reading主备人：余莉备课时间：上课时间组长签字：知识与技能：1.Enablestudentstoimprovetheirlisteningskillsandreadingability.2.Enablestudentstounderstandthedevelopmentofgravityandhowgravityaffectsusindifferenttimesandplaces.情感态度与价值
2、观：Arousestudents’interesttosearchforthemysteryofspace.过程与方法：Teachingmethods:skimming,scanning,discussing.Teachingprocedures:课前自主学习：1.重点词汇和短语Astronomy_________,atmosphere________,system________,violent_______,solid________,Explode__________,carbon_________,dioxide_________,o
3、xygen_______,surface________,Planet_________harmful__________,development_________,spread_______,method_____,solarsystem________,intime________,prevent…from_________,dependon____________2.重点句子（在文章中找到这些句子，并翻译下面这些句子。）1.Whatitwastobecomewasamysteryuntilthedustbegantoslowlycomb
4、ineintoaballmovingaroundthesun.P25_______________________________________________________________________________2.It’sexplodedloudlywithfireandrock,whichwereintimetoproducethewatervapour,carbondioxide,oxygen,nitrogenandothergases,whichweretomaketheearth’satmosphere.P25____
5、___________________________________________________________________________3.Itallowedtheearthtodissolveharmfulgases,whichhadbecomepartoftheearth’satmosphere,intotheoceansandseas.P25_______________________________________________________________________________4.Whetherlife
6、willcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.P26_______________________________________________________________________________TeachingproceduresStep1.leadinInoursolarsystemeightplanetscirclearoundthesun.Whatarethey?(Note：According
7、tothepresentdayscientificstudy,thereareonlyeightplanets,withthePlutoexcluded.)Keys:TheSun,Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus,andNeptune.Step2.SkimmingReadingstrategy(策略):Gothroughthepassagequicklytogetthemainideaofeachparagraph.Don’tworryaboutthedetailsandnewwor
8、ds.Skimthepassageandmatchthemainideawitheachparagraph.Para.1Theformation(形成)ofthee
