Module3Unit2课件英语八年级下册

中国航天全纪录Module3Unit2Wehavenotfoundlifeonanyotherplanetsyet.Learningaims（学习目标）1.Tomasterthekeywordsandexpressions.

掌握重点单词和词组。2.TounderstandandusePresentPerfectbetter.更好地理解并使用现在完成时。3.Todofurtherthinkingandwritingaboutthetopic.对有关话题进行拓展性思考和写作。水星金星火星木星土星天王星海王星Doyouknowthem?planets行星star恒星Thesunanditsplanetsarecalled_____________thesolarsystem太阳系

Oursolarsystemisasmallpartof

________________________银河系.theGalaxy/theMilkyWayTherearemany________（星系）inthe_________（宇宙）galaxiesuniversePuttheminorder:small—large.galaxyplanetsolar

systemuniverse行星太阳系星系宇宙Sohowlargeistheuniverse?Readthepassagequicklyandmatch:Para.1___________Para.2&3____________Para.4___________Para.5_____________Thescientists’progress(进程)B.Thescientists’questionsC.ThesolarsystemandtheuniverseD.ThelifeonearthandotherplanetsABCDReadingtip1:keywordsLearningguidance1Carefulreading:Para11.Howmanyyearshastherebeenlifeontheearth?Hundredsofmillionsofyears.A.百万年B.千万年C.亿万年2.However,wehavenotfoundlifeonanyotherplanetsyet.(ReadPara2andanswer)Becausenoneofthemhasanenvironment

likethatoftheearth.So________________________________________________________________.scientistsdonotthink(theywillfindlifeontheotherplanets)That’swhyLearningguidance2Theearthisa______.Eightplanetsgoesaroundthe_____.Thesunanditseightplanetsarecalled________________.Ourgalaxyiscalled__________________.therearebillionsof______intheGalaxy.starsthesolarsystemtheGalaxyortheMilkyWayplanetsun数十亿颗恒星Oursunisonlyoneofthestars.starplanets(goaround)thesolarsystemtheMilkyWaygalaxyRetellplanet(goaround)universe?Thestarslooksmall.Theyarefaraway.Lightyear光年:Theirlighthastotravelformanyyearstoreachus.Howfar?Carefulreading:Para3Thedistancethatthelightwalksinoneyear.Sohowlargeistheuniverse?Itisimpossibletoimagine.Scientistshavesentspaceships______Marsthemoonoutsidethesolarsystem??Weshouldbeproudofthem,especiallytheastronauts.Howgreatthescientistsare!Carefulreading:Para4?QuestionswithsomanystarsintheuniverseArewealone?Istherelifeoutthereinspace?Havetherebeenvisitorstotheearthfromotherplanets?

alienThealiensareafraidofus.Thelanguagesaredifferent.Carefulreading:Para5Workhardandgettheanswers.Watchthevideopronunciation

and

intonation注意语音和语调Readaloud！5minsYouhavewontheticketstoMars!Congratulations!Whathavethescientistsjustreceived?1.Wherehasthespaceshiplanded?(Mars)IthaslandedonMars.

2.Whathasthespaceshipdiscovered?(peopleonMars)3.WhyhavethepeopleonMarsnotsentusamessage?(donotknowhowto)IthasdiscoveredpeopleonMars.Theydonotknowhowtosendusamessage.Theydono