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1、Unit2Unit2WehaventfoundlifeonotherWehaventfoundlifeonotherplanetsyet.planetsyet.galaxygalaxyplanetplanetsolarsystemsolarsystemuniverseuniversestarstarIcanseeplanetsmallstaruniversegalaxysolarsystemlarge1.Readthepassageandchoosethebesttitlea.Anyoneoutthere?b.Lifeonearthc.Oursolarsystemd.Thestarsatnig
2、htHavewefoundlifeonotherplanetyet?Scientiststhinkthattherehasbeenlifeonearthformillionsofyears.However,wehaventfoundlifeonotherplanetsyet.Whynot?TheEarthisaplanetanditgoesaroundthesun.Eightotherplanetsalsogoaroundthesun.Noneofthemhasanenvironmentwithair,sopeopleandthingscannotgrow.Thesunanditsplanet
3、sarecalledthesolarsystem.Thesolarsystemisasmallpartofourgalaxy.Thestarsweseeatnightarethesunsinothersolarsystems.Therearemorethan200billionstarsinourgalaxy,calledtheMilkyWay,andoursunisonlyoneofthem.Scientisthavediscoveredmanyothergalaxiesintheuniverse.Theyarealongwayawayandtheirlighthastravelledfor
4、manyyearstoreachus.Itishardtounderstandhowlargetheuniverseis.scientistshavesentlotsofspacecrafttolookatotherplanetsinoursolarsystem,andsomespacecrafthavegonebeyondthesolarsystem.However,noonehasdiscoveredanylifeinspaceyet.Butwhyhasnoonefromotherplanetssentusamessage?Havetheytriedtosendinformationtou
5、s?Withsomanystarsintheuniverse,arewealone,oristherelifeoutthereinspace?Wedontknowyet.1.TheEarthisastar.2.TheSunisastar.3.Thereismorethanonegalaxy.4.OurgalaxyispartoftheMilkyWay.Check()thetruesentences 5.Thelightfromstarshastakenalongwaytoreachus.6.Scientistshavefoundlifeonotherplanets.7.Theyvereceiv
6、edmanymessagesfromspace.8.Theyvevisitedmostoftheuniverse.e.g.Theoldmanwasaloneinthehouse,andhefeltverylonely.这位老人一个人在屋里位老人一个人在屋里,他感到非常他感到非常孤独。孤独。Importantanddifficultpoints1.aloneadj.&adv.withoutanyotherpeople独自独自(的的);单独独(的的)2.lonelyadj.寂寞寂寞;孤独孤独Shelivesalone,butshedoesntfeellonely.她独自住着她独自住着,但并不感到孤
7、独但并不感到孤独。2.beyondprep.morethansth.超出超出;除除之外之外Wehavelearnedbeyond3,000words.我们已经学了我们已经学了3000多个单词。多个单词。e.g.Itssaidthatmorethanoneplanetgoaroundthesuninthesolarsystem.据说在太阳系里不止有一颗行星绕太据说在太阳系里不止有一颗行星绕太阳转。阳转。3.morethan意思是意思是“多于多于”,同义词同义词为为over,反义词组反义词组lessthan.4.noone意思是意思是“没人没人”,是两个单词。是两个单词。noone=nobody,
8、指人指人;做主语时做主语时,谓语谓语动词只能用单数动词只能用单数,不能用复数。不能用复数。noone后面不能接后面不能接of。e.g.Noonetoldusaboutthat关于那件事没人告诉过我们。关于那件事没人告诉过我们。none也有也有“没人没人”之意之意,而且还有而且还有“没没有物有物”之意之意,不过是指三人或三人以上不过是指三人或三人以上的人或物。的人或物。做主语时做主语时,其谓遇动词用单其谓遇动词用单复数都可以。复数都可以。none一般可与一般可与of连用。连用。e.g.Noneofyouhaventfinishedthework.你们都没有完成这项工作。你们都没有完成这项工作。5
9、.5.somanysomany意思是意思是意思是意思是“那么多的那么多的那么多的那么多的”修饰可数修饰可数修饰可数修饰可数名词复数名词复数名词复数名词复数,经常与经常与经常与经常与thatthat从句搭配从句搭配从句搭配从句搭配,构成构成构成构成“somany+somany+可数名词复数可数名词复数可数名词复数可数名词复数that”that”句型。句型。句型。句型。e.g.Therearesomanystarsintheskythatnonecancountout.天空中这么多的星星天空中这么多的星星,没有人数得清。没有人数得清。e.g.Heatesomuchfoodthathecouldnt
10、standup.他吃了那么多食物以至于站不起来了他吃了那么多食物以至于站不起来了.somuch“那么多的那么多的”修饰不可数名词。修饰不可数名词。6.Scientiststhinkthattherehasbeenlifeonearthformillionsofyears.科学家认为地球上存在生命已经数万年科学家认为地球上存在生命已经数万年了。了。精讲精讲:这是一个含有这是一个含有that引导的宾语从引导的宾语从句的复合句句的复合句,从句中从句中therehasbeen是是therebe结构的现在完成时态。结构的现在完成时态。millionsof是一个常用短语是一个常用短语,表示表示“数百数百万
11、计的万计的”,指不确切数字指不确切数字,而确切数而确切数字是字是:one,two,three等基数词等基数词+hundred,thousand,million或或billion+可可数名词复数。数名词复数。e.g.Therearefourhundredstudentsinourschool.7.Thesunanditsplanetsarecalledthesolarsystem.太阳和所有围绕它旋转的行星被叫作太阳和所有围绕它旋转的行星被叫作太阳系。太阳系。精讲精讲:本句中的本句中的arecalled是被动语态。是被动语态。被动语态的构成被动语态的构成:be+过去分词。过去分词。e.g.The
12、pictureisdrawnbyhim.Theletteriswrittenbyher.8.Thestarsweseeatnightarethesunsinothersolarsystems.精讲精讲:句中的句中的star,指的是能发光的恒星指的是能发光的恒星,每个恒星包括它的卫星每个恒星包括它的卫星(行星行星)以及行以及行星的卫星星的卫星(如地球的卫星月球如地球的卫星月球)统称一统称一个太阳系。月亮之所以发光是因为它个太阳系。月亮之所以发光是因为它能反射太阳光。能反射太阳光。9.Scientistshavesentlotsofspacecrafttolookatotherplanetsino
13、ursolarsystem,andsomespacecrafthavegonebeyondthesolarsystem.科学家已经发射了许多宇宙飞船去探索科学家已经发射了许多宇宙飞船去探索太阳系中的其他行星太阳系中的其他行星,而且有一些已经而且有一些已经驶向太阳系之外。驶向太阳系之外。I.请根据句意及所给首字母提示写出所缺请根据句意及所给首字母提示写出所缺单词。单词。1.TheEarthisoneofthep_intheuniverse.2.Itsourdutytoprotectthee_.3.Wecantlivewithouta_andwater.4.Peoplefindthatplants
14、cantg_onthemoon.5.Remembertoturnoffthatl_beforeleavingtheroom.ightlanetsnvironmentirrow.请选择正确的选项填空。请选择正确的选项填空。1.Ilikemaths.Mysisterlikesit,_.A.alsoB.eitherC.too2.Ihavemanypenfriends,but_ofthemareforeigners.A.noneB.nooneC.nobodyCA3.Whocantellme_?A.howlongistheriverB.howlongtheriverisC.theriverishowlo
15、ng4.ThenewcolourTV_themtwothousandyuan.A.costB.spentC.took5.IfIhad_dollars,IwouldgivethemtotheChildrensHospital.A.twomillions B.twomillionsofC.twomillionCBA.请阅读下面的短文，判断文后所给句请阅读下面的短文，判断文后所给句子的正子的正(T)误误(F)。Whenwetalkabouttheuniverse,wemeantheEarth,theSun,themoon,starsandspacebetweenthem.Manyofthestars
16、aresofarthatwecannotseethem.ThemoontravelsaroundtheEarth.Ithasalreadybeenvisitedbymaninspaceshuttle.Manycountrieshavesentupman-madesatellitesintospace.TheygoaroundtheEarth.TheyhelpuslearnmoreabouttheEarth.Theyalsohelpussendandreceivemessages.Theymakepeoplefromdifferentcountriesunderstandeachotherbet
17、ter.Sopeoplesaytheworlditselfisbecomingamuchsmallerplace.PeoplecalltheEarth“theglobalvillage”.()1.Thispassageismainlyabouthowlargetheuniverseis.()2.Manhasalreadybeentothemoon.()3.Fewcountrieshavesentman-madesatellitesupintospace.()4.Man-madesatellitescanhelpussendmessages.()5.PeoplecalltheEarth“theglobalvillage”.FTFTTWritethestoryaboutthepictureinActivity6.UsetheanswerstothequestionsinActivity6tohelpyou.Homework