初中八年级英语课件Wehaventfoundlifeontheotherplanet

Module3Journeytospace

Unit2Wehaven’tfoundlife

ontheotherplanetsyet.外研版八年级下册Wehaven’tfoundlifeontheotherplanetsyet.Let’swatchavideoandtalkaboutwhatyouknowaboutthespaceship点击画面播放TheEarthisaplanetandit___________(围绕着……转)thesun.Learnthenewwords.goesaround行星astar恒星Pre-readingSevenotherplanetsalsogoaroundthesun._____(没有一人;没有一个;一点儿也没有)ofthemhasan___________(环境)likethatoftheearth,soscientistsdonotthink

theywillfindlifeonthem.NoneenvironmentThesunanditsplanetsarecalled____________________(太阳系).thesolarsystem太阳的，与太阳有关的/əu//ə/Therearebillionsof

(数以亿计的)starsinthe_________(星系),andoursunisonlyoneofthem.GalaxyReadthepassagequicklyandchoosethebesttitleforit.1.Anyoneoutthere?2.Lifeontheearth3.Thesunandotherstars4.Thestarsatnight√

Thefirstandlastparagraphsmayhelpyougetthemainidea.FastreadingWhile-reading1.ReadP1-2,andchoosesthebestanswers.(1)Howlonghaslifebeenontheearth?()a.Hundredsofyears.b.thousandsofyears.c.Hundredsofmillionsofyears.(2)Howmanyplanetsdoesthesunhave?()a.Sevenb.Eightc.Nine

cbCarefulreadingWhile-reading2.ReadP2-3,andcompare.galaxy＜＜＜solarsystemsununiverseWhile-readingCarefulreading3、ReadP4--5,andcheckthetruesentences.(1)Scientisthaven’tsentspaceshipstotraveloutsidethesolarsystem.()(2)Totheuniverse,scientistshavemanyquestionswithoutanswers.(

)√×haveWhile-readingCarefulreading1.TheEarthisastar.2.TheSunisastar.3.Thereismorethanonegalaxy.4.Thelightfromstarshastakenalongwaytoreachus.5.They’vereceivedmanymessagesfromspace.6.They’vevisitedmostoftheuniverse.aplanet.haven’thaven’t

4.ReadcarefullyandsayTrue(T)orfalse(F).Why?Tip：通览全文，“对症下药”While-readingCarefulreading5.Mind-mapmayhelpyougettheoutlineofthepassage.Readparagraphs2-5againtocompletetheMind-map.While-readingCarefulreadingOurgalaxy(The__________)Other________(morethan200______stars)The____________Other______haveno______,sopeopleandthingscan’t_________.SunSome_________havegone______thesolarsyetem.MilkyWaystarsbillionsolarsystemplanetsairgrowspacecraftbeyondSpaceshipsfromtheearthhavedonesurveysoftheotherplanets,buttheyhavenotfoundanylifethere.Whyhasnoonefromotherplanetstriedto(4)_____________withus?Itistruethatscientistshavenotdiscoveredlifeonotherplanetsinthe(5)_________yet,butsomescientistsbelievethattheywillfinditsomeday.Completethepassagewiththewordsandexpressioninthebox.communicateenvironmentnonesolarsystemuniverseIstherelifeonotherplanets?Therearesevenotherplanetsinour(1)____________,but(2)______ofthemhasa(n)(3)______________likethatoftheearth.solarsystemnoneenvironmentcommunicateuniverse

Post-readingDoyouwanttoknowmoreaboutthespace?Post-readingPost-readingTheuniverseisthenamethatweusedescribethecollectionofallthethingsinspace.Itissohugethatitssizeishardtoimagine.ItismadeupofmanybillionsofstarsandplanetsDistancesinspacearehuge.Theyareusuallymeasuredinlightyears.Onelightyearisthedistancethatlighttravelsinayear.Lighttravelsataspeedof300,000kmpersecondAgalaxyisalargegroupofstars.Galaxiesaresobigthatitcantakearayoflightthousandsofyearstotravelacrossone.Thecloseststartotheearthisthesun.Arayoflighttakeseightminutestotravelfromthesuntotheearth.Therearebillionsofstarsineverygalaxy,Astarcanproduceheatandlight.Somestarsaremuchbrighterthanothers.Theyhavedifferentcolorstoo.Thecolorofastardependsonhowhotitssurfaceis.Starscanbered,orange,yellow,whiteorblue.Blueonesarethehottestofall.练有所得一学习能能力构建1.Theunderlinedword"Distances"inParagraph2probablymeans_______A.距离B.面积C.范围D.体积2.Howlongdoesittakearayoflighttotravelfromthesuntotheearth?A.Twominutes.B.FourminutesC.FiveminutesD.Eightminutes

3._________arethehottestofallstarsA.RedstarsB.BluestarsC.OrangestarsD.Yellowstars4.WhichofthefollowingisTRUEaccordingtothepassage?A.AplanetcanproduceheatandlightB.Theuniverse'ssizeiseasytoimagine.C.ThereareasmallgroupofstarsineverygalaxyD:Theuniverseismadeupoflotsofstarsandplanets.Activity1

Trytodescribetheuniverseinyourownwords.思有所悟

---思维品质培养Whatdoyouknowabouttheearth?Activity2Trytoimaginelivingontheotherplanet,andwriteapassage