Module+3+Journey+to+space+Unit+2+We+have+not+found+life+on+any+other+planets+yet 外研版英语八年级下册+

Unit2Wehavenotfoundlifeonanyotherplanetsyet.Writing1.成百万年2.在其它的行星上

3.绕太阳转4.他们中没有人

5.被叫做6.太阳系

7.一小部分8.几十亿的星星

9.在宇宙中10.许多其他的星系11.距离好远12.不得不，必须13.足够远14.如此多15.和某人联系millionsofyearsonanyotherplanetsgoaroundthesunnoneofthembecalledthesolarsystemasmallpartofbillionsofstarsintheuniversemanyothergalaxiesfarawayhave/hastofarenoughsomanycommunicatewithsb.KeyphrasesSpaceshipsfromtheearthhavedonesurveysoftheotherplanets,buttheyhavenotfoundanylifethere.Whyhasnoonefromotherplanetstriedto(4)_____________withus?Itistruethatscientistshavenotdiscoveredlifeonotherplanetsinthe(5)_________yet,butsomescientistsbelievethattheywillfinditsomeday.Completethepassagewiththewordsandexpressioninthebox.communicateenvironmentnonesolarsystemuniverseIstherelifeonotherplanets?Therearesevenotherplanetsinour(1)____________,but(2)______ofthemhasa(n)(3)______________likethatoftheearth.solarsystemnoneenvironmentcommunicateuniverse

4WritingLookatthepicturefromasciencestoryforchildrenandanswerthequestions.Whathavethescientistsjustreceived?(amessagefromoneofourspaceships)Theyhavejustreceivedamessagefromoneofourspaceships.1.Wherehasthespaceshiplanded?(Mars)IthaslandedonMars.

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

4.WhyhavethepeopleonMarsnotvisitedusontheearth?(donotknowhowto)WritingWriteapassagetodescribethepicture.UseyouranswerstothequestionsinActivity5tohelpyou.WehavejustreceivedamessagefromourspaceshiptoMars……Possibleversion:We’vejustreceivedamessagefromourspaceshiptoMars.Ourspaceshiphasdiscoveredaliensthere.Theyhaveneversentusamessagebecausetheydon’tknowhowtocommunicatewithus.Theyhavenotvisitedtheearthbecausetheydon’tknowhowtoflytoourplanet,andtheyprefer(比较喜欢)lifeonMars.Theylookveryhappyontheirplanet.TheyhaveusedpartsfromtheotherspaceshipsfromtheearthtomakeTVs,radiosandsoon.Itisperfecttolivethere.Doyouwanttolivethere？注意：none与noone（nobody）的区别：none既可指人也可指物，通常与表范围的of短语连用；noone(=nobody)只能指人，不能与of短语连用。如：_________ofthereasonswastrue.A.NoneB.NooneC.All

(2)none与数量有关，可回答howmany问句，表示“一个也没有”；而noone表示“什么人也没有”，可回答who问句。如：-Whoareyouspeakingto?-_________.-Howmanystudentsarethereintheroom?-_________.ANooneNoneKeypoints(3)noneof…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数that是指示代词。为避免重复，可用that或those来代替前面已提到过的人或事物；

Theairinthecountrysideisfresherthan_________inthecity.

Thestreetsinthecityarewiderandthebuildingsaretallerthan________inthecounty.Theenvironmentismuchcleanerthan________inthecity.

thatthosethatHowever,nospaceshiphastraveledfarenoughtoreachotherstarsinourGalaxy.然而，没有一个航天器去到足以到达我们银河系其他恒星那么远的地方。

…enough…todo

adj./adv.+enough+todosth.足够…，可以…not+adj./adv.+enough+todosth.不够…，不可以…(1)我们有足够的钱花。

Wehave___________________________.(2)他跑得够快，很快追上了我们。

Heran__________________catchupwithussoon.(3)他年龄不够大，照顾不了自己。

He_______________________________________.

enoughmoneytospendfastenoughtoisn’toldenoughtolookafterhimselfScientiststhinkthattherehasbeenlifeontheearthfor

hundredsofmillionsofyears.However,wehavenotfoundlifeonanyotherplanetsyet.成百上千数百万亿万ExplanationPara.1Theearthisaplanetanditgoesaroundthesun.Sevenotherplanetsalsogoaroundthesun.Noneof

themhasanenvironmentlikethatoftheearth,soscientistsdonotthinktheywillfindlifeonthem.Thesunanditsplanetsarecalled

thesolarsystem,andoursolarsystemisasmallpartof

amuchlargergroupof

starsandplanets,calledthegalaxyor

theMilkyWay.TherearebillionsofstarsintheGalaxy,andoursunisonlyoneofthem.绕着转它们中没有一个becalled被叫做一小部分一个大的多的星群几百亿noneof…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数Para.2Scientistshavealsodiscoveredmanyothergalaxiesintheuniverse.Theyareveryfarawayandtheirlighthastotravelformanyyearstoreachus.Sohowlargeistheuniverse?Itisimpossibletoimagine.这简直无法想象Itis+adjforsb.todosth.reach=arriveat/in+地点=gettoScientistshavesentspaceshipstotheplanetMarstotakephotos.Theyhaveevensentspaceshipstotraveloutsidethesolarsystem.However,nospaceshiphastravelledfar

enoughtoreachotherstarsinourGalaxy.sendsthtosp.发送…到adj./advenoughtodosth足够…做某事Para.3Scientistshavealwaysaskedthequestions:withsomanystarsintheuniverse,arewe

alone,oristherelifeoutthereinspace?Havetherebeenvisitorstotheearthfromotherplanets?Whyhasnoone

communicatedwithus?Wedonotknowthe