八年級(jí)英語下冊(cè) Module 3 Unit 2 We have not found life on any other planets yet課件 （新版）外研版.ppt

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Module3,Journeytospace,Unit2,Wehavenotfoundlifeonanyotherplanetsyet.,earth,moon,Revision,spaceship,astronaut,spacetravel,ScientistshavesentspaceshiptoMars.Thejourneyhastakenseveralmonths.,Astronautshavealreadybeentothemoon.,NoonehasbeentoMarsyet,becauseMarsisveryfaraway,muchfartherthanthemoon.,LotsofscientistsareworkinghardinordertosendastronautstoMarsoneday.,ScientiststhinkthattherehasbeenlifeontheEarthforhundredsofmillionsofyears.However,wehavenotfoundlifeonanyotherplantsyet.,Readthepassage.,TheEarthisaplantanditgoesaroundthesun.,Sevenotherplanetsalsogoaroundthesun.Noneofthemhasanenvironmentlikethatoftheearth,soscientistsdonotthinktheywillfindlifeonthem.,Thesunanditsplanetsarecalledthesolarsystem,andoursolarsystemisasmallpartofamuchlargergroupofstarsandplanets,calledtheGalaxyortheMilkyWay.,TherearebillionsofstarsintheGalaxy,andoursunisonlyoneofthem.,Scientistshavealsodiscoveredmanyothergalaxiesintheuniverse.Theyareveryfarawayandtheirlighthastotravelformanyyearstoreachus.Sohowlargeistheuniverse?Itisimpossibletoimagine.,ScientistshavesentspaceshiptotheplanetMarstotakephotos.Theyhaveevensentspaceshipstotraveloutsidethesolarsystem.,However,nospaceshiphastravelledfarenoughtoreachotherstarsinourGalaxy.,LookatthepictureandtalkaboutwhatyouknowaboutChinesespaceships.Shenzhou-9isamannedspaceship.,Workinpairs,Listenandread,Readthepassageandchoosethebesttitleforit.1.Anyoneoutthere?2.Lifeontheearth3.Thesunandotherstars4.Thestarsatnight,1.Theearthisastar.2.Thesunisastar.3.Thereismorethanonegalaxyintheuniverse.,Check()thetruesentences.,4.Thelightfromthestarsinothergalaxieshastravelledforalongtimetoreachus.5.Scientistshavereceivedmanymessagesfromspace.6.Spaceshipshavevisitedmostoftheuniverse.,Completethepassagewiththewordsandexpressioninthebox.,Istherelifeonotherplanets?Therearesevenotherplanetsinour(1)_,but(2)_ofthemhasa(n)(3)_likethatoftheearth.,solarsystem,none,environment,Spaceshipsfromtheearthhavedonesurveysoftheotherplanets,buttheyhavenotfoundanylifethere.Whyhasnoonefromotherplanetstriedto(4)_withus?Itistruethatscientistshavenotdiscoveredlifeonotherplanetsinthe(5)_yet,butsomescientistsbelievethattheywillfinditsomeday.,communicate,universe,1.ScientiststhinkthattherehasbeenlifeontheEarthforhundredsofmillionsofyears.科學(xué)家認(rèn)為地球上的生命已經(jīng)有億萬年了。millionsof數(shù)百萬hundredsof數(shù)百thousandsof成千上萬billionsof數(shù)十億,Languagepoints,e.g.TherearebillionsofstarsintheGalaxy,andoursunisonlyoneofthem.銀河系中有數(shù)十億顆恒星，我們的太陽只是其中的一個(gè)。2.However,wehavenotfoundlifeonanyotherplanetsyet.然而，我們還沒有在任何其他行星上發(fā)現(xiàn)生命。,yet用于否定句和疑問句，意思是“還，尚”。notyet的意思是“還沒，尚未”，表示某事物在某一時(shí)間尚未發(fā)生，但未來也許會(huì)發(fā)生。例如：Ihaventlearntanyfartherinformationyet.我還沒有得到進(jìn)一步的信息。Haveyoureceivedherletteryet?你收到她的來信了嗎？,3.TheEarthisaplanetanditgoesaroundthesun.Sevenotherplanetsalsogoaroundthesun.地球是顆行星，它圍繞著太陽轉(zhuǎn)。此外還有七顆行星也圍繞著太陽轉(zhuǎn)。太陽系的其他七顆行星：水星(Mercury)、金星(Venus)、火星(Mars)、木星(Jupiter)、土星(Saturn)、天王星(Uranus)、海王星(Neptune)。,4.Noneofthemhasanenvironmentlikethatoftheearth,soscientistsdonotthinktheywillfindlifeonthem.他們中沒有一個(gè)有像地球這樣的環(huán)境，因此科學(xué)家們認(rèn)為在他們上面找不到生命。noneof表示（三個(gè)以上）一個(gè)也沒有。做主語時(shí)，謂語動(dòng)詞可用單數(shù)或復(fù)數(shù)。,e.g.Noneofushas/havebeentotheMars.我們中沒一個(gè)去過火星。5.oursolarsystemisasmallpartofamuchlargergroupofstarsandplanets,calledtheGalaxyortheMilkyWay.我們的太陽系只是一個(gè)由恒星和行星組成的星系的一小部分，這個(gè)星系比太陽系大得多，稱作銀河系或銀河。,這里的theGalaxy專指“銀河系”，也可以稱作theMilkyWay。而galaxy則泛指“星系”。e.g.Scientistshavediscoveredadistantgalaxy.科學(xué)家們發(fā)現(xiàn)了一個(gè)遙遠(yuǎn)的星系。,6.Sohowlargeistheuniverse?Itsimpossibletoimagine.所以宇宙有多大？我們無從想象。,句型:Itis+形容詞+to+動(dòng)詞原形，意思是“做某事很”e.g.Itisdifficulttoreadthesewords.讀這些單詞很難。,7.Withsomanystarsintheuniverse,arewealone,oristherelifeoutthereinspace?宇宙中有這么多星球，我們是孤獨(dú)的嗎？或者太空中還有其他生命存在呢？,with+名詞+介詞短語，表示伴隨情況，意思是“帶著”。,e.g.Mr.Zhangiscomingwithabookinhishands.張老師手里帶著一書進(jìn)來了。alone在句中作形容詞，不作定語只做表語，也可作副詞。意思是“獨(dú)自地”。e.g.Shewasaloneinthatdarkroom.她獨(dú)自一人呆在那黑屋子里。,Writing,Lookatthepicturefromasciencestoryforchildrenandanswerthequestions.,Whathavethescientistsjustreceived?(amessagefromoneofourspaceships)Theyhavejustreceivedamessagefromoneofourspaceships.1.Wherehasthespaceshiplanded?(Mars),IthaslandedonMars.,2.Whathasthespaceshipdiscovered?(peopleonMars)3.WhyhavethepeopleonMarsnotsentusamessage?(donotknowhowto),IthasdiscoveredpeopleonMars.Wedonotknowhowtosendusamessage.,4.WhyhavethepeopleonMarsnotvisitedusontheearth?(donotknowhowto),Wedonotknowhowtovisitusontheearth.,Writeapassagetodescribethepicture.UseyouranswerstothequestionsinActivity5tohelpyou.WehavejustreceivedamessagefromourspaceshiptoMars_,中考鏈接,1.WheresMrGreen?He_toChangsha.(2013湖南湘西)A.havebeenB.hasgoneC.hasbeen,2.IsTomathome?No,he_totown.(2013天津)A.hasbeenB.hasgoneC.goesD.willgo3.Hepromisedtopickmeupattheschoolgate.However,he_yet.(2011安徽)A.didntarriveB.doesntarriveC.isntarrivingD.hasntarrived,4.Whatistheweatherlikethissummerhere?There_verylittlerain.(2011廣州)A.hasB.hasbeenC.areD.havebeen5.Anumberoftourists_Yangzhoumanytimesbecauseitissuchabeautifulcity.(2013揚(yáng)州)A.havebeentoB.hasbeentoC.hasgonetoD.havegoneto,Thankyou!,