earthmoonspaceshipastronautspacetravelScientistshavesentspaceshiptoMars.Thejourneyhastakenseveralmonths.Astronautshavealreadybeentothemoon.NoonehasbeentoMarsyet,becauseMarsisveryfaraway,muchfartherthanthemoon.LotsofscientistsareworkinghardinordertosendastronautstoMarsoneday.ScientiststhinkthattherehasbeenlifeontheEarthforhundredsofmillionsofyears.However,wehavenotfoundlifeonanyotherplantsyet.TheEarthisaplantanditgoesaroundthesun.Sevenotherplanetsalsogoaroundthesun.Noneofthemhasanenvironmentlikethatoftheearth,soscientistsdonotthinktheywillfindlifeonthem.Thesunanditsplanetsarecalledthesolarsystem,andoursolarsystemisasmallpartofamuchlargergroupofstarsandplanets,calledtheGalaxyortheMilkyWay.TherearebillionsofstarsintheGalaxy,andoursunisonlyoneofthem.Scientistshavealsodiscoveredmanyothergalaxiesintheuniverse.Theyareveryfarawayandtheirlighthastotravelformanyyearstoreachus.Sohowlargeistheuniverse?Itisimpossibletoimagine.ScientistshavesentspaceshiptotheplanetMarstotakephotos.Theyhaveevensentspaceshipstotraveloutsidethesolarsystem.However,nospaceshiphastravelledfarenoughtoreachotherstarsinourGalaxy.LookatthepictureandtalkaboutwhatyouknowaboutChinesespaceships.Shenzhou-9 is a manned spaceship.Read the passage and choose the best title for it.1.Anyoneoutthere?2.Lifeontheearth3.Thesunandotherstars4.Thestarsatnight1.Theearthisastar.2.Thesunisastar.3.Thereismorethanonegalaxyintheuniverse.Check () the true sentences.4.Thelightfromthestarsinothergalaxieshastravelledforalongtimetoreachus.5.Scientistshavereceivedmanymessagesfromspace.6.Spaceshipshavevisitedmostoftheuniverse.Complete the passage with the words and expression in the box.communicate environment none solar system universeIstherelifeonotherplanets?Therearesevenotherplanetsinour(1)_,but(2)_ofthemhasa(n)(3)_likethatoftheearth.solarsystemnoneenvironmentSpaceshipsfromtheearthhavedonesurveysoftheotherplanets,buttheyhavenotfoundanylifethere.Whyhasnoonefromotherplanetstriedto(4)_withus?Itistruethatscientistshavenotdiscoveredlifeonotherplanetsinthe(5)_yet,butsomescientistsbelievethattheywillfinditsomeday.communicateuniverse1.ScientiststhinkthattherehasbeenlifeontheEarthforhundredsofmillionsofyears.科学家认为地球上的生命已经有亿万年科学家认为地球上的生命已经有亿万年了。了。millionsof数百万数百万hundredsof数百数百thousandsof成千上万成千上万billionsof数十亿数十亿e.g.TherearebillionsofstarsintheGalaxy,andoursunisonlyoneofthem.银河系中有数十亿颗恒星，我们的太银河系中有数十亿颗恒星，我们的太阳只是其中的一个。阳只是其中的一个。2.However,wehavenotfoundlifeonanyotherplanetsyet.然而，我们还没有在任何其他行星上然而，我们还没有在任何其他行星上发现生命。发现生命。yet用于否定句和疑问句，意思是用于否定句和疑问句，意思是“还，还，尚尚”。notyet的意思是的意思是“还没，尚未还没，尚未”，表示某事物在某一时间尚未发生，表示某事物在某一时间尚未发生，但未来也许会发生。例如：但未来也许会发生。例如：Ihaventlearntanyfartherinformationyet.我还没有得到进一步的信息。我还没有得到进一步的信息。Haveyoureceivedherletteryet?你收到她的来信了吗？你收到她的来信了吗？3.TheEarthisaplanetanditgoesaroundthesun.Sevenotherplanetsalsogoaroundthesun.地球是颗行星，它围绕着太阳转。此外地球是颗行星，它围绕着太阳转。此外还有七颗行星也围绕着太阳转。还有七颗行星也围绕着太阳转。太阳系的其他七颗行星：太阳系的其他七颗行星：水星水星(Mercury)、金星、金星(Venus)、火星、火星(Mars)、木星木星(Jupiter)、土星、土星(Saturn)、天王星、天王星(Uranus)、海王星、海王星(Neptune)。4.Noneofthemhasanenvironmentlikethatoftheearth,soscientistsdonotthinktheywillfindlifeonthem.他们中没有一个有像地球这样的环境，因他们中没有一个有像地球这样的环境，因此科学家们认为在他们上面找不到生命。此科学家们认为在他们上面找不到生命。noneof表示（三个以上）一个也没表示（三个以上）一个也没有。做主语时，谓语动词可用单数或复有。做主语时，谓语动词可用单数或复数。数。e.g.Noneofushas/havebeentotheMars.我们中没一个去过火星。我们中没一个去过火星。5.oursolarsystemisasmallpartofamuchlargergroupofstarsandplanets,calledtheGalaxyortheMilkyWay.我们的太阳系只是一个由恒星和行我们的太阳系只是一个由恒星和行星组成的星系的一小部分，这个星系星组成的星系的一小部分，这个星系比太阳系大得多，称作银河系或银河。比太阳系大得多，称作银河系或银河。这里的这里的theGalaxy专指专指“银河系银河系”，也，也可以称作可以称作theMilkyWay。而。而galaxy则则泛指泛指“星系星系”。e.g.Scientistshavediscoveredadistantgalaxy.科学家们发现了一个遥远的星系。科学家们发现了一个遥远的星系。6.Sohowlargeistheuniverse?Itsimpossibletoimagine.所以宇宙有多大？我们无从想象。所以宇宙有多大？我们无从想象。句型句型:Itis+形容词形容词+to+动词原形动词原形，意思是意思是“做某事很做某事很”e.g.Itisdifficulttoreadthesewords.读这些单词很难。读这些单词很难。7.Withsomanystarsintheuniverse,arewealone,oristherelifeoutthereinspace?宇宙中有这么多星球，我们是孤独的宇宙中有这么多星球，我们是孤独的吗？或者太空中还有其他生命存在呢？吗？或者太空中还有其他生命存在呢？with+名词名词+介词短语，表示伴随情介词短语，表示伴随情况，意思是况，意思是“带着带着”。e.g.Mr.Zhangiscomingwithabookinhishands.张老师手里带着一书进来了。张老师手里带着一书进来了。alone在句中作形容词，不作定语只做在句中作形容词，不作定语只做表语，也可作副词。意思是表语，也可作副词。意思是“独自地独自地”。e.g.Shewasaloneinthatdarkroom.她独自一人呆在那黑屋子里。她独自一人呆在那黑屋子里。Look at the picture from a science story for children and answer the questions.Whathavethescientistsjustreceived?(amessagefromoneofourspaceships)They have just received a message from one of our spaceships.1.Wherehasthespaceshiplanded?(Mars)IthaslandedonMars.2.Whathasthespaceshipdiscovered?(peopleonMars)3.WhyhavethepeopleonMarsnotsentusamessage?(donotknowhowto)IthasdiscoveredpeopleonMars.Wedonotknowhowtosendusamessage.4.WhyhavethepeopleonMarsnotvisitedusontheearth?(donotknowhowto)Wedonotknowhowtovisitusontheearth.Write a passage to describe the picture. Use your answers to the questions in Activity 5 to help you.WehavejustreceivedamessagefromourspaceshiptoMars _1.WheresMrGreen?He_toChangsha.(2013湖南湘西湖南湘西)A.havebeenB.hasgoneC.hasbeen2.IsTomathome?No,he_totown.(2013天津天津)A.hasbeenB.hasgoneC.goesD.willgo3.Hepromisedtopickmeupattheschoolgate.However,he_yet.(2011安徽安徽)A.didntarriveB.doesntarriveC.isntarrivingD.hasntarrived4.Whatistheweatherlikethissummerhere?There_verylittlerain.(2011广州广州)A.hasB.hasbeenC.areD.havebeen5.Anumberoftourists_Yangzhoumanytimesbecauseitissuchabeautifulcity.(2013扬州扬州)A.havebeentoB.hasbeentoC.hasgonetoD.havegoneto