2021新高考英语一轮复习学案必修3Unit4Astronomythescienceofthestars

Unit4Astronomy：thescienceofthestars1．astronautn.宇航员2．telescopen.望远镜3．universen.宇宙4．rocketn.火箭5．orbitn.(天体等的)运行轨道6．monitorvt.监测；监控7．datan.资料；数据8．gravityn．万有引力9．planetn．行星10．theouterspace外太空11．weathersatellite气象卫星12．spaceshuttle航天飞机1．mannedspaceship/spacecraft载人飞船2．technologicalrevolution科技革命3．spacestation太空站；空间站4．driverlesscars无人驾驶汽车5．explorespace探索太空6．flyingcar飞行汽车7．haveaccesstospacetravel能到太空旅游8．landonthemoon登月9．potentialbreakthrough潜在的突破10．launch/sendupasatellite发射卫星1．Inventorshavebeentryingtomakeflyingcarssincethe1930s.自从20世纪30年代以来，发明家一直在试图制造飞车。2．Thejourneytoouterspaceandotherplanetsisnotadreamanymore.去外太空和其他星球的旅行不再是个梦。3．Thankstoadvancedtechnology,weareexpectedtomakegreaterachievementsinotherfields,whichwillbringconvenienceineveryaspectofpeople'slife.因为先进的科技，我们会在其他领域取得更大的进步，给人们生活的方方面面带来便利。1．It_was_the_first_time_thathumanbeingshadplantedplantsinspace.那是人类第一次在太空种植植物。2．Great_achievements_have_been_madebyChinainspaceexplorationinthepastdecades.在过去的几十年中，中国在太空探索方面取得了巨大的成就。3．Human_beings_have_been_in_spacesincethemiddleofthelastcentury.Butthosehumanbeingsaresimplyafewastronauts.自20世纪中叶以来，人类已经踏入太空，但是这些人只是为数不多的宇航员而已。教材单词写准并记牢高考与教材Ⅰ.重点单词1．atmospheren.大气层；气氛2．fundamentaladj.基本的；基础的3．thusadv.因此；于是4．gentleadj.温和的；文雅的5．climaten.气候6．crashvi.&vt.碰撞；坠落7．pulln．&vt.拉(力)；拖；牵引力8．floatvi.&vt.(使)浮动；(使)漂浮n.漂浮物9．systemn.系统；体系；制度10．theoryn.学说；理论Ⅱ.拓展单词1．globen.球体；地球仪；地球→globaladj.全球性的；全世界的2．violentadj.猛烈的；激烈的；强暴的→violencen.暴力→violentlyadv.暴力地；猛烈地3．unlikeprep.与……不同；不像adj.不同的→likevt.喜欢prep.像→dislikevt.不喜欢；讨厌→likelyadj.可能的4．harmfuladj.有害的→harmn．&vt.伤害→harmlessadj.无害的5．existvi.存在；生存→existencen.存在；生存6．puzzlevt.&vi.(使)迷惑；(使)为难n.谜；难题→puzzledadj.困惑的→puzzling7．religionn.宗教；宗教信仰→religiousadj.宗教上的；信奉宗教的；虔诚的8．biologyn.生物学→biologistn.生物学家→biologicaladj.生物的；生物学的9．reactionn.反应；回应→reactv.反应Ⅲ.阅读单词1．solaradj.太阳的；日光的2.chainn．链子；连锁；锁链3．dissolvevt.&vi.溶解；解散4.acidn5．multiplyvi.&vt.乘；增加6.gravityn.万有引力；重力7．extinctadj.灭绝的；绝种的8.exhaustvt.用尽；耗尽；使精疲力尽9．satelliten.卫星；人造卫星10.spaceshipn.宇宙飞船11．physicistn.物理学家12.oxygenn.氧1.(2019·江苏卷)Unlike(like)traditionalgyms,app­backedgymsofferpeopleflexibleoptionstoexercise.2．(2018·全国卷Ⅲ)Wangbelievestraditionsshouldnotbesealedinglassboxesatmuseums.“Thatisonlyevidencethattraditionsonceexisted(exist)，”hesaid.3．(2018·全国卷Ⅱ)Isawthereweretwoinstructorsonboardandamanlyingacrossthemiddle.Hewasshakingviolently(violent)．4．(2017·全国卷Ⅰ)WhatIsawwaspletelyunlike(like)anythingIhadexperiencedinthepast.Thisnewnessjustleftmewantingmore.教材短语写准并记牢高考与教材1.in_time及时；终于2．lay_eggs下蛋3．give_birth_to产生；分娩4．in_one's_turn轮到某人；接着5．prevent...from阻止；制止6．cheer_up感到高兴；感到振奋7．depend_on依靠；取决于8．break_out突发；爆发9．watch_out_for密切注视；当心；提防10．block_out挡住(光线)11．get_the_hang_of熟悉；掌握；理解12．react_to对……作出反应1.(2019·浙江卷)TheywerenotsurehowtheAmericanswouldreact_to(对……作出反应)thenewtypeofmusic.2．(2018·全国卷Ⅱ)Ifyoulike,asqueezeoffreshlemonjuiceonthebananaswillprevent_them_(from)_turning_brown(阻止它们变成棕色)．3．(2017·浙江卷)Herfriendscametohelpherwhenthewarbroke_out(爆发).教材句式写准并记牢高考与教材1.so...that句型Theearthbecameso_violent_thatitwasnotclearwhethertheshapewouldlastornot.地球变得如此激烈动荡以至于不知道这个固体形状是否会继续存在下去。2．betodosth.结构Theywereintimeto_producecarbon,nitrogen,watervapourandothergases,whichweretomaketheearth'satmosphere.它们最终产生了碳、氮气、水蒸气和其他多种气体，从而形成了地球的大气层。3．makeitpossibletodosth.结构Thisproducedachainreaction,whichmade_it_possible_for_life_to_develop.这就形成了一个连锁反应，使生命发展成为可能。4．倍数表达法ButwhenItriedtostepforward,IfoundIwascarriedtwice_as_far_asontheearthandfellover.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，然后我摔倒了。5．nowthat引导原因状语从句Walkingdoesneedabitofpracticenow_thatgravityhaschanged.既然重力改变了，行走的确需要一些练习。1.(2019·全国卷Ⅲ)Onourwaytothehouse,it_was_raining_so_hard_that(雨下得如此大以至于)wecouldn'thelpwonderinghowlongitwouldtaketogetthere.2．(2018·北京卷)Iexplainedeverystepoftheprocessindetail,which_made_it_possible_for_them_to_understand_how_to__make_tea(这让他们理解如何泡茶成为可能)．3．(2018·全国卷Ⅱ)Theshortfilmtellsaboutthedevelopmentofourschool.Nowourschoolis_three_times_as_big_as_that_ten_years_ago(是十年前的三倍大).1．形容词＋un­前缀变否定词①like→unlike不同的②able→unable不能……的③lucky→unlucky不幸的④believable→unbelievable不可相信的⑤certain→uncertain不确定的⑥clear→unclear不清楚的⑦fortable→unfortable不舒服的⑧fair→unfair不公平的⑨willing→unwilling不情愿的⑩usual→unusual不寻常的2．后缀­ist名词荟萃①biologist生物学家②tourist旅游者；游客③physicist物理学家④scientist科学家⑤psychologist心理学家3．“太空”单词集锦①astronomern．天文学家②astronomyn．天文学③astronautn．宇航员④satelliten．卫星⑤atmospheren．大气层⑥universen．宇宙⑦gravityn．万有引力⑧planetn．行星⑨spaceshipn．宇宙飞船4．“动词＋from”短语一览①keep/stop/prevent...from阻止；制止②separate...from把……和……分离开③differfrom与……不同④sufferfrom受……苦⑤hearfrom收到……的来信5．“动词＋out”短语荟萃①blockout挡住(光线)②breakout突发；爆发③findout查出；弄明白④look/watchout当心；提防⑤putout扑灭⑥runout用完⑦letout泄露；发出(声音)高频词汇精讲1．intime及时；终于Theywereintimetoproducecarbon,nitrogen,watervapourandothergases.它们最终产生了碳、氮气、水蒸气和其他多种气体。intimefor...刚好赶上……intimetodosth.及时做某事innotime立刻；马上atnotime决不(放在句首时，句子用部分倒装)atatime每次；一次atonetime曾经；一度atthesametime同时attimes有时fromtimetotime有时；偶尔takeone'stime从容不迫；慢慢来killtime消磨时间(1)单句语法填空①Theproblemwashardbutheworkeditoutintime.②AllthesegiftsmustbemailedimmediatelysoastobereceivedintimeforChristmas.③Wearrivedinthesummer,justintimeto_enjoy(enjoy)themidnightsun.(2)写作运用Asaproverbgoes,“Wherethereisawill,thereisaway.”Oureffortswillpayoffin_time.常言道：有志者事竟成。我们的努力迟早会有所回报。2．harmfuladj.有害的Whatmanyscientistsbelieveisthatthecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.很多科学家相信，由于地球上长期有水存在，使得地球得以把有害气体和酸性物质溶解在海洋里。(1)beharmfulto对……有害harmlessadj.无害的(2)cause/doharmto...对……造成伤害/有害meannoharm无恶意thereisnoharmindoingsth.做某事没有害处(1)单句语法填空①Themedicineisharmful(harm)tochildrenbutdoesnoharmtoadults.②Theymaynotbeabletohelpbutthereisnoharminaskingthem.③Apparently,youwerecrackingaharmless(harm)joke,butshewasterriblyscared.④Thesedays,breakingtrafficrulesandlitteringaremon,causing/doingseriousharmtolifeandtheenvironment.(2)一句多译What_is_known_to_usisthateatingtoomuchjunkfoodis_harmful_to_your_health.→It_is_known_to_usthateatingtoomuchjunkfooddoes_harm_to_your_health.众所周知，吃太多垃圾食品对你的健康有害。3.existvi.存在；生存Theylaideggstooandexistedontheearthformorethan140millionyears.它们也产卵，并且在地球上生存了一亿四千多万年。(1)existin存在于……之中existon靠……为生Thereexists/existed...某地有……；存在……(2)existencen.存在；生存eintoexistence产生；成立；开始存在(3)existingadj.现存的；现行的(1)单句语法填空①Thesecustomscameintoexistence(exist)longago.②Thereexistmanyopportunitiesforregionaldevelopment.③Itwasimpossibleforthemtoexistonsuchasmalline.④Theparkingplaceforbikeswasanexisting(exist)problemforalongtimeinourschool.(2)完成句子①Scientistshavemanytheoriesabouthowtheuniversefirstcame_into_existence.关于一开始宇宙是如何产生的，科学家们有多种观点。②Asisknowntous,there_existsagenerationgapbetweentheyoungandtheold.众所周知，年轻人和老年人之间存在代沟。4．inone'sturn轮到某人；接着Thustheyhave,intheirturn,beethemostimportantanimalsontheplanet.因此轮到它们成为地球上最重要的动物。inturn依次地；轮流地byturns交替地taketurnstodo...轮流做……It'sone'sturntodosth.轮到某人该做某事了Itturns/turnedoutthat...结果……完成句子①Theoryisbasedonpracticeandin_turnservespractice.实践是理论的基础，反过来理论又为实践服务。②Ithinkit's_my_turn_to_sendthekidstoschoolthisweek.我想这周该轮到我送孩子们上学了。③Whenitismy_turn,_Iamtooexcitedtospeak.当轮到我时，我激动得都说不出话来了。④It_turned_out_thatthepersonseatednexttomeonthetrainwasoneofmyoldfriends.火车上坐在我旁边的那个人原来是我的一个老朋友。5．prevent...from阻止；制止Theyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.他们把过多的二氧化碳排放到大气层中，这使得地球上的热不能释放到太空中去。(1)prevent/stop/keep...fromdoingsth.阻止……做某事protect...from保护……不受……的侵袭；挡住；防御keep...doingsth.使……一直做某事(2)prevent/keep/stopsb.fromdoingsth.的主动式中，只有keep后面的from不能省略，而在被动式中三个短语的from都不能省略。(1)单句语法填空①Heheldfirmlyontothewheeltopreventhimself(from)being_washed(wash)intothesea.②Theywerepreventedfromgoingonholidaybytheirlackofmoney.(2)写作运用Itishightimethatwedidsomethingtostop/prevent_the_environment_(from)_being_polluted(＝keep_the_environment_from_being_polluted)．到了我们采取措施阻止环境污染的时候了。6.puzzlen.谜；难题vt.&vi.(使)迷惑；(使)为难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。(1)puzzleabout/over冥思苦想；苦苦思索(2)apuzzletosb.一件让某人感到困惑的事情(3)puzzlingadj.令人迷惑的puzzledadj.迷惑不解的；困惑的bepuzzledabout对……迷惑不解(1)单句语法填空①Whenthelittlegirlwasaskedsuchapuzzling(puzzle)question,shestoodtherewithasurprisedlookonherface.②Thismorning,whenIwaswalkingonthestreet,Isawthattwotravelerswerereadingamap,lookingpuzzled(puzzle)．③Thepolicearestillpuzzledabout/overhowtheaccidentcouldhavehappened.(2)完成句子Hislastpaintingsareperhapsthe_most_puzzling,_whichevenpuzzlealltheartists.他最后的绘画也许是最令人困惑的，甚至使所有的艺术家感到困惑。7．pulln.&vt.拉(力)；拖；牵引力Astherocketroseintotheair,wewerepushedbackintoourseatsbecauseweweretryingtoescapethepulloftheearth'sgravity.随着火箭升空，我们被重重地向后推在座位上，因为我们在尽力地逃离地球的引力。pullup拔出；(使)停止pullin(火车)进站；(船)靠岸pullout驶出；退出pullover驶向路边pulldown拆毁；摧毁pullthrough康复；痊愈(1)单句语法填空①Thefathersawthetrainhissonwasonpullout,_withhiseyesfulloftears.②Anewhospitalhasbeenplannedtobebuilthere,andtheyaregoingtopulldownthatoldbuilding.③Everyonewasveryconcernedwhetherhewouldpullthroughornot.④Itwasgoingtorain,sotheymanagedtopullinthetractorinsidetheshed.(2)完成句子You'llfindtheoldmaninthegardenasusual,pulling_upweeds.你会像平时一样在花园里找到这个老人，他在拔草。8.cheerup感到高兴；感到振奋Icheeredupimmediatelyandfloatedweightlesslyaroundinourspaceshipcabinwatchingtheearthbeesmallerandthemoonlarger.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。cheersb.up使某人振作起来cheersb.on(比赛中)以喝彩声鼓励某人；为某人加油Cheers干杯！(1)单句语法填空①Theygatheredroundtheswimmingpoolandcheeredheron.②Let'sgotothefootballgameandcheerforourfavoriteteam.(2)完成句子①WhenIdobadlyinstudy,sheencouragesmeandtriestocheer_me_up.当我学习不好的时候，她鼓励我，并试图使我高兴起来。②Idohopeshecancheer_upandacceptthechallengeoflifebravely!我真心希望她能振作起来，勇敢地接受生活的挑战！9．breakout突发；爆发Wewatched,amazedasfirebrokeoutontheoutsideofthespaceshipastheearth'sgravityincreased.我们惊奇地看着，随着地球引力的增加，宇宙飞船的外层起火燃烧。breakoff折断；突然停止；暂停breakinto闯入；破门而入breakdown分解；发生故障；失败；毁掉breakthrough有进展，有突破breakaway脱离；放弃；逃跑breakin打断；闯入用break短语的适当形式填空①Afirebroke_outinthelowerstoreyduringthemidnightandsoonthewholebuildingwasinflames.②Thehusbandandwifearealwaysquarrellingandtheirrelationsarebreaking_up.③Shebroke_downwhensheheardthenews,butquicklyrecovered.④Scientiststhinktheyhavebroken_throughintheirattempttofindthecausesofmanymajordiseases.⑤Lastnightsomebodybroke_intoMrWhite'shouseandtookawayalotofthings.10．watchoutfor密切注视；当心；提防Heclimbedthemountaincarefully,allthetimewatchingoutforlooserocks.爬山时，他步步小心，怕踩到松动的石头。watchover照看；监督；保护keepawatchon注意；密切注视beonthewatch(for)提防；警惕；当心(1)单句语法填空①I'malwayswatchingoutformistakesthatImayhavemissedbefore.②WillyouwatchovermyclotheswhileIhaveaswim?③Pleasekeepaclosewatchonthechildrenwhiletheyareinthepool.(2)完成句子Roadsignswarndriverstowatch_out_forthemooseorotherbiganimalsthatcanwalkintotheroad.路标警示司机要当心出现在路上的大角麋或其他大型动物。重点词汇点拨1．atmospheren．大气层；气氛inafriendlyatmosphere在友好的气氛中thepollutedatmosphere被污染的空气①Creatinganatmospherewhereemployeesfeelpartofateamisabigchallenge.②Theconversationwascarriedoninacordialandfriendlyatmosphere.2．unlikeprep.与……不同；不像(1)It'slike/unlikesb.todosth.做某事实在像/不像某人(2)likeprep.像；类似(反义词unlike)v．喜欢somethinglike几分像……；大约(3)dislikevt.&n．不喜欢；讨厌Daydreamsareoftenverysimpleanddirect,quiteunlike(like)sleepdreams,whichmaybehardtounderstand.3．fundamentaladj.根本的；基本的；基础的；必不可少的befundamentalto...是……的基础Asweknow,hardworkisfundamentaltosuccess.4．layv.放置；搁；下(蛋)；产(卵)layaside把……搁置一旁laydown把……放下；制定layoff(因没有工作而)解雇；停止做layout摆出；铺开；布置；设计①Ilaid(lay)mybookaside,turnedoffthelightandwenttosleep.②Thewifeemployedapanytolayouttheapartment.5．blockout挡住、遮住(光线等)blockoffsth.封锁；堵住blocksth.in塞满；使……受阻blockupsth.堵塞；挡住ablockof＝blocksof大块/一批……ablockofflats一幢公寓大楼Asaresultofthisevent,agreatdustcloudformedintheskyblocking_outthesunlight.因此，天空中形成的大量灰尘层阻挡了太阳光线。典型句式精析1．Theywereintimetoproducecarbon,nitrogen,watervapourandothergases,whichweretomaketheearth'satmosphere.它们最终产生了碳、氮气、水蒸气和其他多种气体，从而形成了地球的大气层。句中betodo结构表示即将发生某事、计划或安排做某事、要求做某事。“beabouttodo”表示即将做某事，不与任何时间状语连用；“will＋动词原形”表示将来行为，“预见”或“临时考虑”将做某事；“begoingtodo”表示打算/计划好去做某事，或有迹象表明要发生某事(1)单句语法填空①Ifyouareto_win(win)thegame,you'llhavetotrainhard.②Waitformeforamoment,I'maboutto_set(set)out.(2)完成句子Theforeignstudentsareto_hold/holdingapartytocelebrateChristmasDaynextMonday.那些外籍学生下周一打算举行一次晚会庆祝圣诞节。2．Thisproducedachainreaction,whichmadeitpossibleforlifetodevelop.这就产生了一系列的反应，使得生命发展成为可能。这是“makeit＋形容词/名词＋todosth.”句型。该句型中it为形式宾语，指代后面的不定式结构，形容词或名词为宾语补足语。(1)make＋宾语＋宾语补足语eq\b\lc\{\rc\(\a\vs4\al\co1(名词或形容词,不带to的不定式,过去分词,介词短语))(2)常用于这种句型的动词还有：think,consider,find,feel等(1)单句语法填空①PeopleintheWestmakeitaruletobuyChristmaspresentsfortheirrelativesandfriends.②Myparentswouldliketomakemestudy(study)24hoursaday.③Theteacherraisedhisvoicesothathecouldmakehimselfheard(hear)．(2)完成句子TheInternetmakes_it_possible_to_sharethelatestnews.网络使得分享最新消息成为可能。3．ButwhenItriedtostepforward,IfoundIwascarriedtwiceasfarasontheearthandfellover.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，然后我摔倒了。英语中常见的倍数表达法有：(1)A＋be＋倍数＋as＋adj./adv.原级＋as＋B(2)A＋be＋倍数＋adj./adv.比较级＋than＋B(3)A＋be＋倍数＋the＋名词(size/weight...)＋of＋B(4)A＋倍数＋what从句(1)单句语法填空①ItisreportedthattheUnitedStatesusestwiceasmuchenergyasthewholeofEurope.②Theredruleristhreetimesthelength(long)oftheyellowone.③Thepopulationnowinthisvillageisfivetimeswhatitwastenyearsago.(2)完成句子Therearefive_times_as_many_booksinourlibraryasinyours.我们图书馆里的书是你们图书馆里的书的五倍。4.“Ohdear，”Icried,“walkingdoesneedabitofpracticenowthatgravityhaschanged.”“天啊，”我惊呼，“既然引力改变了，走路就确实需要稍微锻炼一下了。”(1)nowthat相当于since，是连词词组，用来引导原因状语从句，口语中经常省略that，只用now，这时now已经失去了“现在”的含义(2)可引导原因状语从句的从属连词(词组)：because,as,since,nowthat,inthat；并列连词：for完成句子Now_that/Sinceyouhavegrownup,youcanmakeupyourmindbyyourself.既然你已经长大了，你可以自己做决定了。Ⅰ.单词拼写1．Thoseanxiousforreformsaythatthepresentsystem(体制)istoonarrow.2．Ihopeyouwillrecoversoonunderthisenjoyableclimate(气候)．3．Accordingtothetheory(理论)ofrelativity,nothingcantravelfasterthanlight.4．Heoftensaysthathedoesn'tbelieveinanyreligion(宗教)andonlybelievesinhimself.5．Atruckwentoutofcontrolandcrashed(碰撞)intothebackofabus.6．Tornadoesareviolent(猛烈的)whirlwindswhichvaryintheirwidthfromafewyardsto1,300feet.7．Asmallboatwasfloating(漂浮)onthesurfaceofthewater.8．Agreatblock(块)ofrockhadfallenfromthecliffandnowblockedtheroad.9．Fromtheseobservationsweconcludethatthemoonhaslittleornoatmosphere(大气层)．10．Someexpertsthinkreadingisthefundamental(基本的)skilluponwhichschooleducationdepends.Ⅱ.单句语法填空1．Sheisaveryreligious(religion)personwhogoestochurcheverySunday.2．Thiskindofplanthasbeeninexistence(exist)formillionsofyears.3．Hearrivedhomejustintimeto_witness(witness)hisbrotherbeingtakenawaybythepolice.4．Weliveinaglobal(globe)village,butthisdoesn'tmeanthatweallbehaveinthesameway.5．Itiswrongtoseeviolence(violent)astheonlywaytosolveproblems.6．Thechildrenareschooledinanoldroomthatoncestoredharmful(harm)chemicals.7．Unlike(like)hisbrotherheistalkativeandhasasenseofhumour.8．Itwasmyfriendswhogavemeagreatdealofencouragement(encourage)．9．Icouldfeelthewindgently(gentle)blowingthroughmyhair.Itwasawarmsummerbreeze.10．Thegovernmenttookimmediatemeasuresandthediseasewaspreventedfromspreading.11．Heisoneofthegreatestphysicists(physics)intheworldandmanypeopleadmirehimverymuch.12．OverthepastfiveyearsTomhas_gone(go)throughalotofhardships.13．Agriculturehasdevelopedrapidly,thusproviding(provide)lightindustrywithamplerawmaterials.14．Thepolicemansignalledthedrivertopulloversothathecouldcheckhislicence.15．Ifyouwanttosucceedintheyearsto_e(e),youmuststudyhardfromnowon.Ⅲ.选词填空inone'sturn，breakout，cheerup，getthehangof，watchoutfor，intime，blockout，givebirthto1．WhenPremierLiKeqiangturnedup,allthestudentscheered_up.2．Lastnightafirebroke_outinthehotelacrossthestreet.3．ClassThreeshouldberesponsibleforraisingtheredflagthisweekin_its_turn.4．Onlybypractisingtimeandtimeagaincanyouget_the_hang_ofthegrammarrules.5．Shemarriedat25andgave_birth_toherfirstchildshortlyafter.6．Sheboughtaheavycurtaintoblock_outthelight.7．Lastnight,MrsGreenhadaheartattack.Butluckily,thedoctorcamein_timetosaveherlife.8．Doremembertowatch_out_forcarswhilecrossingthestreet.Ⅳ.完成句子1．Now_thatwehavenothingtodo,wecanenjoymusicforalittlewhile.既然我们无事可做，我们可以享受一会儿音乐了。2．Obviously,itistheteamworkthat_makes_it_possibleforthemtogoanywheretheywantto.显而易见，正是团队合作才使得他们去想去的地方成为可能。3．It_is_not_clear_whethertheaccidenthasaneffectontheenvironmentornot.还不清楚这次事故是否对环境有影响。4．Geologicalresearchshowsthatwhenevertheearthheatsupafewdegrees,theArcticgetsthree_times_as_warm.地质研究表明，每当地球温度上升几度，北极地区就会变暖三倍。5．WheneverIencounterdifficulties,shewillencouragemeandhelpmecheer_up.每当