高中英语-Unit 4 Astronomy 英语 高中 李燕教学课件设计

Unit4Astronomy:thescienceofthestarsI.Studyaims:Knowledgeaim:(知识目标)Studentsarefamiliarwithvariousexpressionandhaveagoodcommandofthedevelopmentofthelife.Abilityaim:（能力目标）Studentscanfigureouttheimpliedmeaningwhilereadingandlistening.Emotionaim:（情感目标）Studentsrealizetheimportanceoftheprotectingourenvironmentandlovingourearthandlife.AncientChinesehadtheirownideasabouthowlifebeganontheearth.Doyouknowthesestories?Howlifebeganontheearth?Nuwamakeshumanbeingfromtheclay(粘土).PanguseparatestheskyfromtheearthReligiousBeliefsAccordingtoBible,Godcreatedtheworldinsevendays.

Day5:Godcreatedlivingthingsintheairandsea.Day6:

Godcreatedthelandanimalsandthefirstman.Day7:GodrestedandcalledthisdayHoly.

thescientificexplanationaboutthebeginningoflife

HowLifeBeganontheEarth

What’sthewritingstyleofthetext?A.Narrative记叙文B.Explanation说明文C.Essay散文11111111111111111111111111111111111111111111111111111111PassagestructureMainbodyPara2:Para3:

Para5:Awidelyacceptedtheoryabouttheformationoftheuniverse.Theformationoftheearth.Theimportanceofwaterforlife.Thedevelopmentofplantsandanimalsontheearth.Thearrivalofhumansandtheirimpactontheearth.matchthemainideaofeachpara:Para1:

Para4:

Thetextcanbedividedinto________Partone:Thedevelopmentof______Parttwo:Thedevelopmentof______.Lifeinthe______Lifeonthe______Orderofwriting:_______twoparts

time

Passagestructure

earth

life

water

land

Careful--readingAfterthe“BigBang”,whathappenedontheearth?Stage1:Thedevelopmentoftheearth(1)AftertheBigBang,whatwastheearthlike?

acloudofdust

asolidglobeexplodedwithfireandrock

producedwatervapourandgases(2)Whathappenednext?(3)Whatdidthewatervapourandgasesform?theearth’satmosphereWaterappeared(4)Whatappearedastheearthcooleddown?waterisimportantforthebeginningoflifeontheearth.

Stage2:Para4-5Thedevelopmentoflifesmallplantsappearsinwater1.Whatlifedevelopedafterwaterappeared?Shellfishandallsortsoffish2.Whatlifedevelopedinwaternext?

greenplantsbegantogrowonland

insectsappeared3.Whataboutthelifeonland?

amphibians

forests4.Whatlifedevelopednextonland?

reptilesappeared

dinosaurdeveloped5.Whatlifedevelopedafterforestsappeared?mammalsonlandsmallcleveranimals7.Whatlifedevelopedaftermammals?

1.Whoarethesmallcleveranimalswithhandsandfeet?

2.Aretheytakingcareoftheearthwell?Why?

?

Becausetheyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.Theearthmaybecometoohottoliveon.WhatwillhappenwhenweputtoomuchCO2intotheatmosphere?greenhouseeffectglobalwarminganimalswilldieoutplantswilldieoutTherewillbenolifeontheearthDiscussionriseofthesealevelicebergsandglaciersmeltWhydidtheplantsgrowbeforetheanimalscame?2.Whyisitwrongtoshowfilmswithdinosaursandpeopletogether?Pair-workBecauseplantsprovideoxygenandfoodforanimals.Becausedinosaursdiedoutlongbeforehumanbeingdevelopedontheearth.课文缩写语法填空Attheverybeginning,theearthwasjustacloudof①________(energy)dust.Thenthedustcombinedintoaballmovingaroundthesun.Afterthat,itexplodedloudlywithfireandrock,②________(produce)watervapour,carbon,nitrogenandothergases,③________intheendmadetheearth’satmosphere.Thentheearthcooleddown,andwater,oneoftheearth’sspecialqualities,appearedandstayedontheearth,whichmade④________possibleforlifetobegin⑤________(develop).energeticproducingwhichittodevelop

summary

Somesmallplantsgrowinginthewaterappearedontheearth’ssurface,⑥________(follow)bylandanimals,⑦________(include)insects,amphibians,reptilesandthemostimportantanimals⑧________(call)dinosaurs.Finallydinosaursdisappearedallofasuddenandsomesmallcleveranimalswithhandsandfeetappearedandspreadall⑨________theearth.Inplaceofdinosaurstheybecame⑩________mostimportantanimalsontheplanet—thatis,humanbeings.followedincludingcalledovertheAsastudent,whatlittlethingscanwedofortheearthtopreventGlobalwarming?DiscussionplanttreesrecyclerubbishsavewatergreentravelWhetherlifewillcontinueontheearthdepe