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1、Book3Unit4学案WarmingupLanguagepoints【原句1】Inoursolar________eightplanetscirclearoundthesun.在我们的太阳系中有八颗行星围绕着太阳转。1).____________n.[c]系统；体系；制度；方法_______________adj有系统的;有条理的Eg:Heintroducedusawell-designedrailwaysystem.Theeconomicsystemaffectsthewholecountries.Underthene
2、wsystem,peopleloveourcountry..(1)The____________(教育系统)operatesverydifferentlyintheUSandChina.(2)太阳系包括太阳和它的八颗行星。_______________________________________________________________________________(3)在新制度下，农民工(migrantworkers)将受益很多。_______________________________systemati
3、ceducationalsystemThesolarsystemincludesthesunanditseightplanets.Underthenewsystem,migrantworkerswillbenefitalot.Reading一．语法填空（根据课文内容完成短文）Nooneknowshowtheearthbegan,asithappenedsolongago.However,accordingtoa1._______(wide)acceptedtheory,theuniversebegan2.______a"B
4、igBang"thatthrewmatterinalldirections.Afterthat,atomsbegantoformandcombinetocreatestarsandotherbodies.Forseveralyearsafterthe"BigBang",theearthwasstilljustacloudofdust.Whatitwastobecomewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglo
5、be.Theearthbecamesoviolent3.______itwasnotclearwhethertheshapewouldlastornot.Itexplodedloudlywithfireandrock.Theywereintimetoproducecarbon,nitrogen,watervapourandothergases,4._______weretomaketheearth'satmosphere.5.______isevenmoreimportantisthatastheearthcooledlo
6、w,waterbegan6._________(appear)onitssurface.WaterhadalsoappearedonotherplanetslikeMarsbut,7._______theearth,ithaddisappearedlater.Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothe8._________(develop)oflife.Whatmanyscientistsbelieveisthatthecontinuedpresen
7、ceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.Thisproduced9.______chainreaction,whichmade10._______possibleforlifetodevelop.widely,with,that,which,What,toappear,unlike,development,a,it二．Languagepoints:【原句1】However,accordingtoawidelyacc
8、eptedtheory,theuniverse____________a"BigBang"thatthrewmatterinalldirections.然而，一种普遍为人们所接受的理论是：宇宙起源于一次大爆炸，这次大爆炸将物质投射到四面八方。1).__________________从/以……开始Eg:
