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1、Astronomy:thescienceofthestars编号002【学习目标】1.Throughseriesofactivities,thestudentswillbeableto1.speakouttheChinese1meaningsofthewords&phrasesandpronouncethemcorrectly.2.usethewords&phrasescorrectly【教学重点】Enablethestudentstograsptheusagesofsuchimportantnewwordsandexpressionsasvoilen
2、t,unlikefundamental,dissolve,multiply,exist,prevent,intime,layeggs,givebirthto,blockoutandsoon.【教学难点】Howtoenablethestudentstograsptheusagesofkeywordsandunderstandsomedifficultandlongsentences.【知识链接】名词性从句——宾语从句、表语从句;非限定定语从句【自主预习】Wordsvoilent,unlikefundamental,dissolve,multiply,ex
3、ist,preventExpressionsintime,layeggs,givebirthto,blockout,cheerupPatterns1.Itexplodedloudlywithfireandrock,whichwereintimetoproducethewatervapor,carbondioxide,oxygen,nitrogenandothergases,whichweretomaketheearth’satmosphere.2.Nobodyknewthatitwasgoingtobedifferentfromotherplanets
4、goingroundthesun.3.Itallowedtheearthtodissolveharmfulgases,whichhadbecomepartoftheearth’satmosphere,intotheoceansandseas.4.Thisencouragedthedevelopmentofearlyshellfishandallsortsoffish.5.Theyproducedyounggenerallybylayingeggs.【自学检测】Readthetextcarefullyandfillintheblanks:Theearth
5、wasjustacloudof____afterthe“BigBang”.Theearth______loudlywithfireandrock.Theywerein_____toproducemanythings,whichweretomaketheearth’satmosphere.Astheearthcooleddown,waterbegantoappearonitssurface.Itallowedtheearthtodissolve______gases.Thenlifebegantodevelop.Thefirstsmallplants__
6、____andfilledtheoceansandseaswithoxygen.Thisencouragedthe_______ofearlyshellfishandfish.Landanimalssuchasinsects,reptilesanddinosaursandsononappearedaftergreenplantsappeared.Smallcleveranimals__allovertheearth.Theyareputtingtoo___carbondioxideintotheatmosphere,which___heatfromth
7、eearthintospace.Whetherlifewillcontinueontheearthformillionsofyearstocomewill_____onwhetherthisproblemcanbesolved.【预习疑问】【课堂探究】Task1Readthetextaloudandthenuseownwordstoretellit.Task2Thefollowingaresomeimportantwordsandphrases.Trytobeclearabouttheirmeaningsandreadthemcorrectly.Per
8、mit;account;stare;patiencevoilent,unlikefundame
