Book 3 Unit 4 Astronomythe science of the stars.docx
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Book 3 Unit 4 Astronomythe science of the stars.docx
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Book3Unit4Astronomythescienceofthestars
Book3Unit4 Astronomy:
thescienceofthestars
Ⅰ.关键词汇
1.Thehenwasoldanditstopped____________(下蛋)eggs.
2.Theidea____________(存在)onlyinthemindsofusyoungpeople.
3.Doyouthinkoureducation____________(制度)needsimproving?
4.The____________(气候)ofsouthernFloridaattractsthousandsoftouristseachwinter.
5.Withoutpracticetherewouldbeno____________(理论).
6.ProfessorLihassolvedthe____________(难题)andeveryoneischeering.
7.Mars’__________(万有引力)isonlyabout38%ofEarth’s.
8.Raisingyourchildtotellthedifferencebetweenrightandwrongisoneofthef____________tasksofparenthood.
9.用harm的适当形式填空
(1)Airpollutionwillgetworseandthiswillbe____topeople,forexample,itcancausecancer.
(2)Rubbishcanbechangedinto____________things.
(3)Don’t____________youreyesbyreadinginthedimlight.
10.Lastnightwehadadiscussion,whichbecamemoreandmore____________.Finallywereachedanagreementthatwewillneveruse____________whateverhappens.(violent)
关键短语
1.________________下蛋
2.________________ 及时,终于
3.________________产生;分娩
4.________________轮到某人;接着
5.________________阻止;制止
6.________________挡住(光线)
7.________________感到高兴;感到振奋
8.________________既然
9.________________突发;爆发
10.________________密切注视;当心;提防
重点句式
1.________________wasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.
随后它会变成什么没有人知道,直到38~45亿年前,这团尘埃才慢慢地形成一个固体的球状物。
2.Theearthbecame____________itwasnotclearwhethertheshapewouldlastornot.
地球变得如此猛烈,以至于它的形状能否持久还不清楚。
3.Thisproducedachainreaction,which__________________.
这就产生了一系列的反应,使得生命有可能发展了。
4.Wewatched,________________ontheoutsideofthespaceshipastheearth’sgravityincreased.
我们惊奇地看着,随着地球引力的增加,宇宙飞船的外层燃烧起火。
5.ButwhenItriedtostepforward,IfoundIwascarried_________ontheearthandfellover.
而当我试着向前迈步时,我发觉我被送出很远,步子的跨度竟是在地球上的两倍,因而我摔倒了。
6.“...walkingdoesneedabitofpractice________________gravityhaschanged.”
“……既然重力改变了,走路也确实需要练一练了。
”
Ⅱ.知识详解
1.exist vi. 存在,生存
(回归课本P26)Theylaideggstooandexistedontheearthformorethan140millionyears.
它们也生蛋,在地球上生存了一亿四千多万年。
[例句探源]
①Theycan’texistonthemoneyhe’searning.
______________________________________________________
②Thereexistsagoodwaytosolvetheexistingproblemingeography.
_______________________________________________________
③Nooneknowshowthisworldcameintoexistence.
_______________________________________________________
[即境活用]
1.完成句子
(1)巴基斯坦在战后就以一个独立的国家存在了。
Pakistan________________________________________________countryafterthewar.
(2)就我所知,他们收入微薄,几乎无法维持生活。
AsfarasIknow,theyarepaidhardlyenough________________________.
2.puzzle n. 谜;难题 vt.&vi. (使)迷惑;(使)为难
(回归课本P27)Howlifebeganonearthisoneofthebiggestpuzzlesthatscientistsfoundhardtosolve.地球生命如何起源是科学家们觉得很难解决的最大的难题之一。
[例句探源]
①Whatpuzzlesmeiswhyheleftthecountrywithouttellinganyone.
_______________________________________________________
②Thepolicearestillpuzzlingabout/overhowtheaccidentcouldhavehappened.
_______________________________________________________
③Scientistshavebeentryingtosolvethispuzzleforyears.
_______________________________________________________
④HelookedpuzzledsoIrepeatedthequestion.
_______________________________________________________
[即境活用]
Ex.Shelostheartsinceshefailedintheexam.Shefelt________aboutherfuture.
A.puzzle B.puzzling
C.puzzledD.puzzles
3.pull n.&vt. 拉(力);拖;牵引力
(回归课本P30)Astherocketroseintotheair,wewerepushedbackintoourseatsbecauseweweretryingtoescapethepulloftheearth’sgravity.
随着火箭的升空,由于我们在努力挣脱地球的引力,我们被向后推在座位上。
[例句探源]
①Hepulledthedooropenandrushedout.
_______________________________________________________
②Thepolicecarsignaledtoustopullin.
_______________________________________________________
③Wewavedasthetrainpulledoutofthestation.
_______________________________________________________
④ThedoctortoldmethatIwouldpullthrough.
[即境活用]用pulldown;pullin;pullout;pullthrough填空:
(1)Houseswere________tomakewayforanewhighway.
(2)Cheerup!
Takemoreexerciseeverydayandyouwill________.
(3)John________behindmeandparked.
(4)Becarefulwhenyou________ofthedriveway.
4.intime 及时;终于,总有一天
(回归课本P25)Theywereintimetoproducecarbon,nitrogen,watervapourandothergases,whichweretomaketheearth’satmosphere.
最终产生了碳、氮气、水蒸气和其他多种气体,从而形成了地球的大气层.
[例句探源]
①Thekidswillbeleavinghomeinnotime.
_______________________________________________________
②Willyoubebackintimefordinner?
_______________________________________________________
③Ishouldbebackintimetowatchtheshow.
______________________________________________________
④Thecompanyfiredhimfornotcomingtoworkontime.
_______________________________________________________
[即境活用]
(1).Willyoubehome________toseethechildrenbeforetheygotobed?
A.ontime B.intime
C.atatimeD.atonetime
(2).________,IlostheartinEnglishlearning,butmyteacheroftensaidtome,“Keeponstudyinghard,andyou’llsucceed________.”
A.Atatime;intime
B.Atatime;ontime
C.Atonetime;intime
D.Atonetime;ontime
(3).(2010年江西景德镇模拟)—Doesheoftenaskyouforhelp?
—Oh,no,only________.
A.allthetime B.atonetime
C.atatimeD.attimes
(4).—IamafraidIcan’treturnthebooktoyoubeforeFriday.
—________.
A.Don’tbeafraidB.Becareful
C.NotatallD.Takeyourtime
5.inone’sturn 轮到某人;接着
(回归课本P26)Thustheyhave,intheirturn,becomethemostimportantanimalsontheplanet.
于是,他们接着成为了这个行星上最重要的动物。
[例句探源]
①Whenitisinmyturn,Iamtooexcitedtospeak.
______________________________________________________②Thecustomerpraisedthemanager,whointurnpraisedhisstaff.
_______________________________________________________
③Alltheoriesarederivedfrompracticeandinturnservepractice.
_______________________________________________________
④Nowitisyourturntolookafterthechildren.
_______________________________________________________[即境活用]
Peopletrytoavoidpublictransportationdelaysbyusingtheirowncars,andthis________createsfurtherproblems.
A.inshort B.incase
C.indoubtD.inturn
6.prevent...from... 防止某事发生
(回归课本P26)Theyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.
他们把过多的二氧化碳释放到大气层中,这使得地球上的热不能释放到太空中去。
[例句探源]
①Guardsstoodatthedoorstopreventanyonefromleaving.
_______________________________________________________
②Oncehehasmadeuphismind,noonecanpreventhimfromcarryingouttheplan.
_______________________________________________________
③Hisadvicekeptmefrommakingaseriousmistake.
_______________________________________________________
[即境活用]
Allpossiblemeans________.However,nothingcan________himdyingoflungcancer.
A.hastried;stop
B.havetried;keep
C.hasbeentried;prevent
D.havebeentried;stop
7.cheerup (使)高兴;使振奋;感到振奋
(回归课本P31)Icheeredupimmediatelyandfloatedweightlesslyaroundinourspaceshipcabinwatchingtheearthbecomesmallerandthemoonlarger.
我立刻感到很高兴,由于失重我在太空舱里飘来飘去,我望着(身后的)地球越来越小,而(前方的)月球越来越大。
[例句探源]
①GiveMaryacall;sheneedscheeringup.
_______________________________________________________
②Thegoodnewscheered(up)everybodywhoheardit.
_______________________________________________________
③ThecrowdcheeredwildlyatthesightofLiuXiang.
_______________________________________________________
④Theydothisinordertoencouragecrowdstocheertheirsportsteams.
_______________________________________________________
[即境活用]
—I’mthinkingofthetesttomorrow.I’mafraidIcan’tpassthistime.
—________!
I’msureyou’llmakeit.
A.Goahead B.Goodluck
C.NoproblemD.Cheerup
8.harmfuladj.有害的==》harmn.&v.损害,伤害
常用结构:
①beharmfulto对……有害
Eg.Smokingisharmfultoyourhealth.吸烟有害健康。
②dosb.harm/doharmtosb.对某人有害
③meannoharm无意伤害别人;没有恶意
④harmone’simage/reputation损害某人的形象/名声
⑤domoreharmthangood弊大于利
⑥Thereisnoharmin(one’s)doingsth.
=Itdoesnoharm(forsb.)todosth.(某人)做某事无害处
[即境活用]
Heisanicedog.Hewon’tdoyouany.(原创)
A.illB.biteC.hurtD.harm
Ⅲ.句型梳理
1【教材原句】 “...walkingdoesneedabitofpracticenowthatgravityhaschanged.”(P31)
“……既然重力改变了,走路也确实需要练一练了。
”
【句法分析】
nowthat由于;既然,引导原因状语从句,有时that可以省略。
[例句探源]
①Nowthatyouhavefinishedyourwork,you’dbetterhavearest.
_______________________________________________________
②Now(that)theweatherisfine,let’sgoforaride.
_______________________________________________________
③Nowyouhavegrownup,youcanmakeupyourmindbyyourself.
_______________________________________________________
[易混辨析]nowthat,since,as,for, because
(1)nowthat既然,与since含义相近,语气较弱,强调人们已知的事实。
(2)since侧重主句,从句表示显然的或已为人所知的理由,
常译为“因为”或“既然”,语气比because稍弱,通常置于句首,表示一种含有勉强语气的原因。
(3)as语气比because弱,所引导的从句表示的是显而易见的原因和理由,从句一般放在主句前。
(4)for是并列连词,表示推断的原因,或对前一分句补充说明理由。
for表示这一用法时需放在两句之间。
(5)because语气最强,一般指事情发生的直接原因,回答提问时,一般放在主句之后。
[例句探源]
①Hewasabsentfromthemeetingbecausehewasillyesterday.
_______________________________________________________
②Sinceyoucan’tanswerthequestion,I’llasksomeoneelse.
_______________________________________________________
③Astherewasnoanswer,wewrotehimagain.
_______________________________________________________
④Itmusthaverainedlastnight,forthegroundiswet.
_______________________________________________________
[即境活用]
(1).________you’vegotachance,youmightaswellmakefulluseofit.
A.Nowthat B.After
C.AlthoughD.Assoonas
(2).—DidyoureturnFred’scall?
—Ididn’tneedto____
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