Module3Unit2课件英语八年级下册

Module3JourneytospaceUnit2Wehavenotfoundlifeonanyotherplanetsyet.Newwordsuniversegalaxysolarsystemlightenvironment在远方太阳的不可能的系统群组环境宇宙交流outimpossiblesystemsolaruniverseenvironmentgroup星系galaxy没有一人光线lightnone那个thatoutlightenvirnmentnonesystemgroupsolarimpossibleuniversethatgalaxy1.3.2.impossiblelightenvironmentIt’sadj.todosth.

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.Mars火星Uranus天王星[ˈjʊərənəs]Neptune海王星[ˈneptju:n]Jupiter木星[ˈdʒu:pɪtə(r)]Saturn土星[ˈsætɜ:n]Mercury水星[ˈmɜ:kjəri]Venus金星[ˈviːnəs]Earth地球地球Earth太阳系由内及外的第三颗行星太阳系中直径、质量和密度最大的类地行星现有45.5亿岁，有一个天然卫星——月球地球表面积5.1亿平方千米，其中71%为海洋，29%为陆地地球的卫星—月球地球唯一的天然卫星月球是太阳系中体积第五大的卫星平均半径约为1737.10千米，相当于地球半径的0.273倍月球与地球的平均距离约38.44万千米，大约是地球直径的30倍。月球的年龄大约有46亿年。月球有壳、幔、核等分层结构。Themoonisasatelliteoftheearth.[mu:n]月球[ɜ:θ]地球火星Mars火星上有太阳系已知最大的山奥林帕斯山，最大的峡谷水手号峡谷。质量（地球质量=1）：0.1074火星有两个天然卫星：火卫一和火卫二Activity1:WatchandthinkAreyouproudofChina?Whatdoyouknowaboutspaceexploration?太空探索Activity2:ReadthepassageandchoosethebesttitleforitAnyoneoutthere?2.Lifeontheearth3.Thesunandotherstars4.Thestarsatnight1.Anyoneoutthere?Activity2-Task1:MatchtheparagraphswiththeainideasPara.1 A.Scientistsquestionsaboutlifeintheuniverse.Para.2 B.ThesolarsysemandtheMilkWay.Para.3 C.Lifeontheearthbutnotonanyotherplanets.Para.4 D.SpaceshiptoMarsandoutsidethesolarsystem.Para.5 E.Manyothergalaxiesintheuniverse.Activity2-Task2:ReadPara.1-2andchooseScientiststhinkthattherehasbeenlifeontheearthforhundredsofmillionsofyears.However,wehavenotfoundlifeonanyotherplanetsyet.(1)therebe句型表示“在某地有某物或某人”

therebe句型的现在完成时即把“be动词”写成现在完成时结构，即：therehave/hasbeen

(2)hundredsofmillionsof数亿……

Wepaidhundredsofmillionsofdollarsintaxes.

我们交纳了数亿美元的税金。Activity2-Task2:ReadPara.1-2andchooseTheearthisaplanetanditgoesaroundthesun.Sevenotherplanetsalsogoaroundthesun.Noneofthemhasanenvironmentlikethatoftheearth,soscientistsdonotthinktheywillfindlifeonthem.goaround绕着....转Activity2-Task2:ReadPara.1-2andchoosenone表示（三个以上）一个也没有，none作主语时，谓语的单复数形式要根据实际情况来定。如：NoneofthemhasbeentoBeijing.

他们中没有一个人到过北京。（none指代可数名词，强调单一性，谓语用单数形式）Noneofthemwereawareofthedanger.他们都没有意识到危险。（none指代可数名词，强调整体性，谓语用复数形式）Noneofthemoneyishis.这些钱没有他的份儿。（none指代不可数名词，谓语动词用单数形式）Activity2-Task2:ReadPara.1-2andchooseThesunanditsplanetsarecalledthesolarsystem,andoursolarsystemisasmallpartofamuchlargergroupofstarsandplanets,calledtheGalaxyortheMilkyWay.TherearebillionsofstarsintheGalaxy,andoursunisonlyoneofthem.1.becalled被称为...2.apartof......的一部分3.这里的theGalaxy专指“银河系”，也可以称作theMilkyWay。而galaxy则泛指“星系”。Activity2-Task2:ReadPara.1-2andchoose1.Havewefoundlifeonanyotherplanetsyet?A.Yes,wehave. B.No,wehaven’t.2.Howmanyplanetsarethereinthesolarsystem?A.Seven. B.Eight.3.Whydon’tscientiststhinktheywillfindlifeonotherplanets?A.Becauseoftheenvironment.B.Becauseofthescienceandtechnonlogyisnotgoodenough.Activity2-Task2:ReadPara.3and4,checkwhathavewedoneScientistshavealsodiscoveredmanyothergalaxiesintheuniverse.Theyareveryfarawayandtheirlighthastotravelformanyyearstoreachus.Sohowlargeistheuniverse?Itisimpossibletoimagine.1.faraway远离2.for+一段时间3.It’s+adj.todosth.做某事是......的Activity2-Task2:ReadPara.3and4,checkwhathavewedoneScientistshavesentspaceshipstotheplanetMarstotakephotos.Theyhaveevensentspaceshipstotraveloutsidethesolarsystem.However,nospaceshiphastravelledfarenough

toreachotherstarsinourGalaxy.1.outside在外面2.adj./adv.enoughtodosth.到达……程度，会发生某结果Activity2-Task3:ReadPara.3and4,checkwhathavewedoneWehave...discoverothergalaxiessendastronautstotheMarssendastronautstotheMarssendspaceshipstotraveloutsidethesolarsystemActivity3:Check(√)thetruesentences1.Theearthisastar. □2.Thesunisastar. □3.Thereismorethanonegalaxyintheuniverse.□4.Thelightfromthestarsinothergalaxieshastravelledforalongtimetoreachus.□5.Scientistshavereceivedmanymessagesfromspace.□6.Spaceshipshavevisitedmostoftheuniverse.□Activity4:CompletethepassageIstherelifeonotherplanets?Therearesevenotherplanetsinour(1)___________,but(2)_____ofthemhasa(n)(3)___________likethatoftheearth.Spaceshipsfromtheearthhavedonesurveysoftheotherplanets,buttheyhavenotfoundanylifethere.Why