Module3Unit2Wehavenotfoundlifeonanyotherplanetsyet课件英语八年级下册

Hasshefoundlifeonotherplanets？Module3JourneytospaceUnit2Wehavenotfoundlifeonanyotherplanetsyet.Numbertheparagraph12345Readp.1.2.3andanswerthequestions1.Howlonghastherebeenlifeontheearth?.

2.Whatdosevenotherplanetshaveincommon(共同点)withtheearth?.

3.Whydon’tscientiststhinkthey’llfindlifeontheotherplanets?.

4.Howdoscientistsknowthesegalaxiesareveryfaraway?.

1.Howlonghastherebeenlifeontheearth?Hundreds

ofmillionsofyears.

数亿年life√life×scientiststhink2.Whatdosevenotherplanetshaveincommon(共同点)withtheearth?

Theyallgoaroundthesun.theearththesuntheearthTheearthgoesaroundthesun.Sevenotherplanetsalsogoaroundthesun.Mercury水星Venus金星Mars火星Jupiter木星Saturn土星Uranus天王星Neptune海王星3.Whydon’tscientiststhinkthey’llfindlifeontheotherplanets?Becausenoneofthemhasanenvironmentlikethatoftheearth.

Whatdoes“them”and“that”referto(指代）?“them”refersto“sevenotherplanets”.“that”refersto“environment”.它们(其他七个行星)都没有像地球那样的环境。3conditions①thetemperature②water③air8______planetsSun____________solarsystemotherstars(恒星)andplanets___________________________GalaxyortheMilkyWay

(银河系)othergalaxies________Universesmallbig4.Howdoscientistsknowthesegalaxiesareveryfaraway?Theirlighthastotravelformanyyearstoreachus.lightyear——光年

是一个天文学上的长度单位，用来表示光在真空中一年所传播的距离。它大约等于9.46万亿千米，常用于衡量宇宙中天体之间的距离。vast(辽阔的)expansive(浩瀚的)...5.Wherehavescientistssentspaceship?(多选题)A.TheplanetMars.B.Outsidethesolarsystem.C.OtherstarsinourGalaxy.6.Howdidwriterendthepassage?A.BylistingnumbersB.ByaskingquestionsC.BygivingexamplesReadpara.4.5andchoose.Withsomanystarsintheuniverse,arewealone?Istherelifeinspace?Havetherebeenvisitorstotheearthfromotherplanets?Whyhasnoonecommunicatewithus?Whydoesthewriterendthepassagewithsomanyquestions?

(引发读者的进一步思考)Toletthe

readersthinkaboutthequestion:Isthereanyotherlifeintheuniverseoroutthereinspace?Readthepassageandchoosethebesttitleforit.1.Anyoneoutthere?2.Lifeontheearth3.Thesunandthe

otherstars4.ThestarsatnightAfterreading,whereisthispassageprobablyfrom?AsciencemagazineAsciencefiction

(科幻小说)Whatkindofwritingstyleisthispassage?Popularscienceexpositorywriting(科普说明文)1.Theearthisastar.2.Thesunisastar.3.Thereismorethanonegalaxyintheuniverse.4.Thelightfromthestarsinothergalaxieshastravelledforalongtimetoreachus.5.Scientistshavereceivedmanymessagesfromspace.6.Spaceshipshavevisitedmostoftheuniverse.Readthepassageagainandcheck(√)thetruesentences.planet.partnot√√√anyP213Task5China’sfirstlunarprobe,Chang’e-1in2007(中国首颗月球探测器-嫦娥一号)

China’sfirstlunarrover，YuTuin2013(中国首辆月球车---玉兔号月球车)Thelargestintheglobalplanetprobes,Tianwen1in2021(全球行星探测器中重量最大的----天问一号)Oneoftheworld’sthreemajorsatellitenavigationsystems，BDSin2020(全球第三个成熟的卫星导航系统---北斗卫星导航系统)Ourtargetisthestarrysea.We’llnevergiveup.星辰大海，永不止步--《人民日报》已经有...数亿的...任何其他的+n(单/复)绕着...转这儿已经有...太阳系银河系数亿的许多其他的+n(复)遥远的Itisimpossibletodosth做某事是不可能的足够远adj/advenoughtodosth足够...去做某事在太空中=nobody没有一个人与某人交流Completethepassagewiththewordsandexpressioninthebox.communicate

environment

none

solarsystem

universe Istherelifeonotherplanets?Therearesevenotherplanetsinour(1)___________,but(2)______ofthemhasa(n)(3)____________likethatofthe

earth.Spaceshipsfromtheearthhavedonesurveys

oftheotherplanets,buttheyhavenotfoundanylife

there.Whyhasnoonefromotherplanetstriedto(4)_____________