外研版高中英语必修1词性转换练习

BookModule1Ⅰ单荟萃__________adj.热的，热的enthusiasmn.热；热情________令人惊异的_______使惊________adj.感吃惊的n.惊愕，惊__________n.信→informvt.通知，告__________n.指示，用说instructv.教，令，指示______令人厌烦的_______对人事物)厌的，烦闷→______使厌烦___________尴的，难的__________使窘，使促不安→_____________令人为难的→embarrassmentn.窘；为难__________n.行为，举止behavev.举动，举__________n.描述；形容；描describevt.描，记_______vt.使人印深刻铭记__________n.印象，感→impressiveadj.令人印象深刻的10.__________．正，改正→correct正的→_______v改正，纠11.__________鼓励，激→__________鼓人心的→___________受到鼓舞的，更有信心的→encouragementn.鼓，奖励12．enjoymentn.享受，乐趣→_______v.享，喜欢________adj.令人愉快的，有乐趣的13．fluencyn.流，流畅_______流的，流的14._____________失的→______________adj.使失望的，令失望的disappointvt.使→_____________n.失15._________助，助理assist．帮助Ⅱ短检测1．与相似2．某人对做某的态度_____________________3．离远，远___________________4．一点不像，与完不_____________________5．玩得很开____________________6．起初，一始____________________7．换句话说____________________-8．期待；盼______________________-9．对印深__________________10．……始的时____________________11．……束的时________________12．(划分…____________________13．加__________________14．外活动___________________Module21

Ⅰ单荟萃________有趣的；可笑的→________adj.感到有趣的________vt.使快→amusementn.乐，娱乐2．energeticadj.精充沛的．力3nervousadj.紧的焦虑___________神经紧张；焦虑________adj.有织的；有系统的→organizern．织者→________v组织___________n组织________adj.耐的________．心________感激，欣赏appreciation．感激，欣7scientificadj.科学的________n.科→________n.科家________n总结；摘要；提要→summarize总结；概述________n．习→revise复；订，改10.________正的adj.非正式的11relaxed轻的宽松的________adj.令人轻松→________vt.轻松n轻松；放松12．同地类似________同的；类似的similarityn.相Ⅱ短检测1．确定，确；查明_____________________2．犯错误___________________3．取得进步__________________4．不断总做某事__________________5．结果______________________6．在某方面干得好______________7．事实上_______________8．睡着_____________________9．讲笑话；开玩笑__________________10．倦_11．愿，宁____________________12．用……合乎的实__________________Module3Ⅰ单荟萃________n.距→distant远的，不友的___________被弃abandonvt.遗，弃3shootvt.射杀过式过分词

.．漠→desertv.抛；遗________．家expertadj.老练的；专门的；内的6productn.产，产物________v．生产，制造产，产量producen.产品指农产品)________n.风景；景→scene现，场，景色2

________v.使吃惊，惊吓________adj.令人恐惧→________感恐惧的，感到怕的→frightn.恐，怕9interviewer．面时的)主官；面谈→________．面10.________疲不堪的________令疲惫不堪的________使疲惫不堪．疲力竭Ⅱ短检测1．机起__________________2．上车船_______________3．下车船_________________4．被遗弃的农场_______________5．试着骑马_________________6．是的写简________________7．不再…________________8．过时____________________9．以的速度_________________10．加开幕典礼________________【相关拓展】我们所学的不少动词)其后既可接动ing形式，又接不定式形式，但含不同。goondoing继续干原来的事goonsth.(做某事)接去做另一件事stopdoingsth.停止做某事stopdosth.停来去做另一件事forget/remember/regretdoingsth.忘记了记起后悔做过某事forget/remember/regrettodosth.忘记了记起遗憾要去做某事Module4Ⅰ单荟萃____________n.四，街→neighborn.邻居____________adj.有引力attract吸引，引起的好感________n．吸引，吸引．fortunate幸的→________adv.幸地________．运气，财__________adj.不的___________adv.不幸地4touristn.游→tourn.&v.旅游，巡演→________n.旅业________.饿死starvationn.挨→________adj饥的____________.失业的________v.雇用→employee．雇→n.雇主→employment.就，工，业____________.专业→profession.职________n．授_____________.迷的fascinate．迷住____________adj.着的3

________.幸存，死里逃→

________．幸存survivorn．幸存者Ⅱ短检测1．一座五层的公寓大___________________2．建造；张_______________________3．到目前为_______________________4．的意思_____________________5．摆脱，离，去假____________________6．许多；大________________7．做成某事；取得成-_____________________8．上升_________________9．赚钱_______________10．有钱做某事____________________辨析02…意思是(1)dosth.打做某事doing意着，思是befor…意图是，意用来(2)noharm并有意伤害it/whatonesays说话算话sth.(alot/nothingetc.)(tosb.)(对人不要，对人没有值(3)byallmeans(表同)当可以，问题byofsth.

用某种办法；借助于bynomeans绝；一点都不Module5Ⅰ单荟萃_______．混合物v.混→_______adj男合的_________．电electricaladj.与电有关的，电→electricadj电的，发电的_________．结论．推断出，断定作结____n.目，对准.对目标；打算adj.没目标；无目的的reactionn．反应，回→____v．反应，作出应equipmentn．备，装→______.装，配备_________.吃惊的；惊讶→___________.令吃astonish．使惊讶astonishmentn.惊讶Ⅱ短检测1．使有理____________________4

2．想起，考虑_________________3．弄清楚，弄白____________________4．把加到……________________________5．使不进入，防进入____________________6．开始做，着干，进行吧7．安静点______________8．过去常常__________________9．在过去的二十年里________________________10．么要…_________________11．……到骄_________________12．应，应____________________keep(sb.)out(of把关在外面；阻止入内；不参加；不进去(1)keepawayfrom(远，保持离keepoff使避；不让接(2)keep_up使持、维在一水平；使不低落；继续keepwith跟，不后keepback控，抑制；隐瞒；扣下；阻碍(某展keeptotheroad/thepoint/onepromise不偏离道路主题遵守诺言go违背，对……利；……相反goalloutdo/forsth.全以赴做某事go(时过；依据，遵循godown下降，低goup上，房建立起来goon继；发生，行；(时过goonwith继做某事goondoing继做原的)goon接做另一件事Module6Ⅰ单荟萃1accessn．近；通路→_________.易接近的；可进入的2defencen.保；防卫_______v．保护；防卫；捍卫3．_______v.创；发明n.创者，创者n.创造，发物________.有造力的，创性→creativityn创力4．n发______v.发明→inventorn.发者5permissionn.许→________.许，许6．__________v.集中注力、思想)concentrationn集中；专注7definite.明的，确的肯定__________.明地；肯地8independent.独的_____________独→_________adj.依的依的→_______v．依赖，依靠9．n.弊端；缺点→advantagen.优，长处5

10._______.缩______.短，短的→shortagen.不；缺少Ⅱ短检测1．注册，登录___________2．注销___________3．由组成4．也______________5．作为而出名_____________6．下降____________7．提出_________________8．从那时起_________________9．使用登互联网_____________-10．因特网上________________11．把意力集在12．…比起来_________________13．某事犹豫不决_____________________5expect预，预期；期待，等，望；料想(1)expectationn.期，预期；前，成功的前景(2)expect(sb.)待料/指望某做事beexpectedtodosth.应该做某事asexpected按想的expectlotofsb.对人要求过高很(3)liveuptoone’sexpectations不负某人的期望BookModule1OurBodyandHealthyHabits____罕见的奇的→_____adv.很少地，罕地rarenessn.稀奇；珍贵2不康的，不生_______健的，卫生→______n.健康_______富的wealthn.财富_______忧虑的；焦虑的，不的；渴望anxietyn.焦，忧______vt.害，伤害injuryn.损，毁坏_______adj.受的6painn.痛苦，疼痛；辛苦，力常复使苦；疼→_______令疼痛的；令人痛苦的；疼的painlessadj.无的；不引起痛苦的______adj.正的正规的n.正状→abnormal不正常的8adj.超重的，肥胖→_____重，称重，权衡______n.重，体重______v.呼，呼→n.呼吸，气息，口气10._____吓的；糟的，难受→______adv.非常awfulnessn.糟，恶劣，难受6

No1．.注射→2．vt.减少3．．罪行；犯罪行→4．．联系；关系；关联5．违的；不合法→

n．注射n．缩小，减少n．罪犯vt.联系，连接反义词合的6．n．疗vt治疗.对7．不同意；意见不→8．n参与者；参加者9．.认，认知；认出10．．分心；分散注意力11．n．(药等上的人；瘾君子的

．意见不合，争论v．参加，参与n．认识，认出vt.分(某的意力药物等上12．n危

.危险的M3Music1composer作家________vt.创，作曲；组成→___________n．作文，作曲由…成的_________n.音乐家．→_______adj.音的_______．指挥directv.指，导______．方→________adj.直的4lose失去___n．损失____adj.迷的，丢的5tourvt.&．巡回演出；观光，旅游_______．旅游→______n.旅业6talentn.天，天_______有赋→___________n.天，天赋同词_________vt.&n.影→influentialadj.有响的_____vt.&n.录，记，唱recorder．音机9mixvt.使混合_______n.混物M4Arts-Western,ChineseandPopArts1．vt.观察；注意到n观察家；观察者n.观察2．n．情表现表达→.表达_____________．_______．真实；现实；真v.实，认识→adj.实的；实际的________→现实主义4．vt.破毁坏n毁灭者驱逐舰摧毁坏___________5．．爱好；嗜→(反义词.憎恶；不喜____________6．．艺术n.术_艺术()的美术家的________7．adj彩色→颜色v.涂颜色______8．令愉快的爱的adj高兴的→使高兴高兴；快乐；满意_____M5Earthquakes1．．经济.济的，节约→__________．经济学家2．．政治.治的

n．政治家3．n．贺

vt.祝贺4．历史性的.有史意义__________n．历史7

5．．成就；功业；伟绩→vt.取得成就)6．不怀疑信信→

vt.相信

.可相信的7．.文化的n．化多元文化的8．vt.创，生产n创作，生→n产品M6FilmsandTVProgrammes1．n．剧n悲剧2．n．演员n．演员v．表演3．.女；女性的→adj.男的；男性4．n．作．大师vt.握5．.使感兴

.感兴趣→令感兴趣的6．感的adj.感动的→vt.使感动7．_____有；偶尔有的；偶尔的__．场合，机会8．vi争→

．争论9．.有趣的；令人愉快的→

vt.使愉快→n．娱乐；款待Module1Europe_______位→situatevt.使位于→_______n.位置；情形；境遇_______adj.locate.使落于；找……的置_______n.地，位置_______．象征；符号__________象→symbolizev象征．议，契→v同意，一致_______．不同意5．representativen．表__________．代表_______产品，农产品.生productn工业)产→__________产量，生产______vt.签署，签→signaturen.签_______.统治，治n．长，统者__________．政府Module2DevelopingandDevelopedCountries_______n.饥→hungry.饥饿的_______n.贫→pooradj.穷的3develop.发；成长；开发；冲洗照片→__________n.发→__________adj.发展中的________adj.发的4．educate.教→________n.教育________adj.无可的n.家6similarityn.类________adj.类似的________.类似地________adj.拥的crowdv.n.拥挤；人群，群___________.不幸的，可惜→fortunateadj.幸____________adv.不地；可惜地________n.运，财富________.运，交通工具．运输→transportationn.运，交通工具；运输业10.________.污染pollutev.污染________.污8

ModuleTheViolenceofNature1．.经验；经历v.经，体→__________.有经验的________adj.暴的→violencen.暴力3．n.喷发______.喷__________n.可能possible.可的→_______.可能→_________.不可能的__________adj.令可怕的terrifyv.使怕→________adj.害的______adv.幸地→lucky.幸的→_______n.幸7activeadj积极的________adv.积地→________.积极，活8occurv.发生________过去式________过去分→occurrencen.发的事情；发生，出现9strike.袭→______过式______过去分词10._________感激地.感的11._________.满希望地，有望hopeful.满希望的12._____adv.伤心地，难地sadadj.伤的难______n.伤心，难过Module4inAsia___________.吓人的，可的________.害的________vt.使怕frightn.惊吓________．力气，力量；长→________.加强→strongadj.强壮的___________n.环境，围绕，外界→environmental.境的；有环境的4pollutev．染________adj.污染→________.污5majoradj.主的，较大→________．大多数________.关的，担的→concernn.关心，担心_______adj.急的，紧急的→urgencyn.紧急；紧急的事8complain.抱怨，投→___________n抱怨，投__________adv.绝对地，完地→absolute.绝的，全的10．.保护________v.保，护Module5GreatPeopleandInventionsofAncientChina1．equal.等于.相的，平的_______adv同样地，相等地________．平等，同等9

__________．重要，重要性→important.重的3stressn.压v.读，强调→________.紧的→________感压力的________v.辞→resignationn辞职；辞呈________.有响的influence．.影_______．诚实honest.诚的→________.诚地_______n.正，公→.正；刚才正义的___________n．献，捐助→contributev.捐，作出贡献9invent.发；虚构，编→__________.发________n.发家10.__________n.争，辩论→argue.辩；主张ModuleOldandNew1accommodatev.提供住处；容纳；适应→_____________n住宿，住所适应_____________.建→construct.建3historical.历的，有历史的________adj.有历史意义的→________n.历4narrow.狭的，狭的v.使变→________adv狭隘地，勉地________.全的→globen.全球，地6observatory.观台→________v.观察→observationn.观_____.有雾的→fogn雾________v.迁；除去，拿走n．去，除；移动，搬迁Module1Lifeinthe

_______.预，预言__________n.预→adj.可预言的，可预报的____adj危险的；冒险→.&n.险____vi.依；依靠_______adj.可的reliabilityn.可性4loadvt.装载.装量；负→_______v．卸货_________v.下载

______.供动力n.动，能力，权→powered.用动力推动的，有动力装置的_________adj.有的；有功效的

_________．失去能力；伤→disabled残疾的_________adv.无疑地；确定地definite.明的，一定的_________adv.最后；终于eventual.最的，最终的10

Module2TrafficJam1．permitn执照，许可证.允许，准许过式过分词__________________→在分词_________→__________n.允许2．n.收据_______.收，接收；接待，接→receptionn．招待会；接受；待．．限制，范围.限→limitation．制，局限

_______adj.有的

_________.无限的

_________adj.给印象深刻的__________n.印→impressvt.留深刻印象5convenientadj.方的，便利→___________．方便，便→___________.不方便的____________n.不便

______vt.探→__________n探索→explorer.探索者reactvi反；作出回应_______n反

_______n.解答，答案solvev．决moodn.心，心境→_______adj.心坏的，喜怒无常的10．registrationn．照；登→

_______n.登，注册ModuleBodyNon-verbalCommunication

_____________n.交，交流通信→communicatevt.交；通讯；传__________adj.无意的，不知不觉→consciousadj.有意的，有觉的3formaladj.正式的_________adj非正式的

___________adv.传统→__________adj传的→traditionn.传统__________adj.恐的，具有威胁的→_________.威胁，恐吓threatn.威胁，恐吓panicn．v．惊恐，恐→_________过去式过分词→_________现分词

_________．邀请invitev.邀____________n.表；表现→perform.执，履行；表演；表现9social.社会的_______adv.社地.社会10._________.掌声→applaudv.鼓11._______n．等equal.平________adv.平等地，同样地11

Module4GreatScientists

_______主要的leadvt.领，带→_____n.领袖，领导→_________n领导，领导层

_______.教→_________．教育→educatorn．育家_______原来的，最初的originn．源_______.身体的，物理→_________.身体上physicsn.物→______.精神的，心理的，智力的_________adv.精上；心上；力上5graduate.毕→__________n.毕personal.个人的，私人的，亲自的_________.亲身，亲自；就个人_________.人，品格，个性．n.相论，相关性

_______n．属戚.相的；比较的；相关的→________.相地，比较→_____.使有联涉→______.有的，相系的_______n．关系，关联；亲属，亲

_______vi爆→explosionn.爆，爆炸声ModuleATripAlongtheGorges1surround.围，环绕___________周围的，附近→__________n．境常用复数

_____adj.多的，丘陵起伏→．小山3narrowv．使变窄.的，勉强→_________adv勉强地，差一点4distantadj.遥远的_________．距离，遥远

_______.开→exploitationn开，剥削6forbid.禁→_______过去式_________过去分词

________adv.然地naturen自_______.自然的，天生的ModuleUnexplainedMysteriestheNatural

__________吓_______．使惊吓，惊恐_________.受的，受恐吓的→frightn.惊吓，恐怖2．vi.存在，生存________n.存→_______adj现存的，现在的3sharp.锋利的尖的；急剧的adv.准的_______v．使锋，尖锐12

_______.尖锐地，急剧

_________adj神的mysteryn．神秘，神秘的人或物_____.使应，使适合；改adaptionn.适应，改编6destructionn毁坏→_______vt.毁坏7变莫测的__________.可言的报→_______vt.预；预报________n.预，预报

_______.象，暗示indicationn.指出；迹象指示______n．运气，命运，一大笔adj幸运→

_________adv.幸地__________adj不幸的英必五点词变UnitThegreatscientists词变science(n.)学__________(a.)analysis(n.)析__________(v.)分attendance(n.)照；出席；参（pollution(n.)污染—__________(v.)__________（染的）announcement(n.)宣；通告——宣；通告instruction(n.)命；指导——instruct—具指导性的value(n.)价—__________珍惜；看重价值的exposure(n.)暴；裸露__________(v.)使露；裸—__________(a.)infection(n.)感—__________(a.)传的11.conclusion(n.)结论——推断出12.construction(n.)建设——__________(v.)造13.enthusiasm(n.)热__________(a.)热的14.persuade劝——__________有服力的15.puzzle(n.&v.)难题；迷—困惑的13

__________（）成；分配—分relation(n.)关系——__________(v.)与关—与关的unite(v.)联；团——__________(a.)团的will(n.)意志；决心__________(a.)愿的convenience(n.)方—__________(a.)便的attraction(n.)引力；吸——__________(v.)吸——有魅力的collection(n.)收；收藏——__________(v.)收——集的enjoyment喜；——enjoy(v.)喜欢令人愉快的description(n.)描述；描写__________(v.)描—描的10.possibility(n.)可性__________(a.)可能的可地11.industry(n.)工业工的12.history(n.)历史—__________(a.)历性的13.arrangement(n.)安排安14.delight(n.)快；高兴使兴delighted(a.)高的Unit3（）印象给留印—令钦佩的constancy(n.)稳定性断的；重复的__________(adv.)不地guidance(n.)指；引导—指；指引opening(n.)开式；洞—__________(v.)打开着的tolerance(n.)宽容；忍耐性容__________(a.)以忍受的lack(n.)缺短缺__________g(a.)不的adjustment(n.)调；调节调整__________(a.)可调节的settlement(n.)协；定居settle(v.)解；定居稳定的location(n.)位；场所__________(v.)位10.surrounding(n.)环—surround(v.)围—__________(a.)围的11.length(n.)长度—加长长14

12.pressure压—__________s按压Unit4辑、主编编辑delight(n.)快乐使——__________(a.)快乐的admiration钦佩钦——令钦佩的profession职、专业——专的concentration集中专——__________(v.)集information(n.)信/情报__________告通知approval(n.)批批认可——arrive(v.)到—propose(v.)10.采者接受采访者interview(v.)采11.__________(n.)出版/出版业出/发行12.guilt(n.)罪过—__________(a.)内的13.__________(n.)照片/摄影师—photograph(v.)摄影14.imagination想力想—富想象力的15.technology(n.)技—__________(a.)技术的__________(adv.)技上16.gift(n.)天——__________(a.)有赋的17.accuration(n.)精确——__________(a.)精的Unit5aid词变疗、处理、对待treat(n.)对——treat(v.)对待申请申申__________(n.)出席、到场present(n.)物——present(a.)在场的injury(n.)伤——伤害__________(a.)受伤的15

include包—included(a.)包括—包poison(n.)毒有的electricity(n.)电电的—电__________(n.)幸happy(a.)心happily(adv.)开地care(n.)照—__________(a.)细心的粗的10.__________(n.)困难难11.majority(n.)大数—主的12.responsibility责任感—有责任感的13.blood血流__________(a.)出血的14.wound(n.)伤口——受的答案：Module1besimilaroneattitudeto/towards(doing)sth.farnothinglikehavefunatfirstinotherlookforwardtobeimpressedby/withatstartofatofbedividedintotakepartinafter-schoolactivitiesenthusiasticamazingamazeamazedinformationinstructionboringboredboreembarrassedembarrassembarrassingbehaviourimpressimpressioncorrectioncorrectencourageencouragingenjoyenjoyablefluentdisappointeddisappointingdisappointmentassistantModule216

suremakeamistake/makemistakesprogressdoingsth.asresultdowellinsth.infactasleeptelljokesget(withsth.)wouldratherbetrueofamusingamusedamuseenergynervousnessorganizedorganizeorganizationpatientpatienceappreciatesciencescientistsummaryrevisionformalinformalrelaxingrelaxsimilarlysimilarModule3takeoffgetongetoffabandonedfarmstryridinghorsesbeshortfornot…anymoreoutofdateatspeedofattendopeningceremonydistanceabandonedshotdesertexpertproduceproductionsceneryfrightenfrighteningfrightenedinterviewexhaustedexhaustingexhaustModule4astory(ed)apartmentblockputupsofar/upnow/tillnowgetaway(from…)alargenumberof/agreatmanyitgoupmakemoneycan’ttodosth.neighborhoodattractiveattractionfortunatelyfortuneunfortunateunfortunatelytourismstarvestarvingunemployedemployprofessionalprofessorfascinatingfascinatedsurvivesurvivalModule5put…inorderthinkoffindoutadd…to…tofgoaheadkeepthenoisedownusedtoinlasttwentyeither…orbeproudofbesupposedtomixturemixedelectricityconclusionaimreactequipastonishedastonishingModule6logonlogoffconsistaswellbe/becomeknownasupwithfromthatmomentaccess/haveaccesstoInternetonInternetconcentrateon/uponcomparedwith/tohesitatetodosth.accessibledefendcreatecreativeinventioninventpermitconcentratedefinitelyindependencedependentdependdisadvantageshortenshortModule1rarerarelyhealthyhealthwealthyanxiousinjureinjuredpainfulnormalweighweightbreatheawfulawfullyModule2Injectinjectionreducereducecrimecriminalconnectionconnectillegallegaltreatmenttreatdisagreedisagreementparticipateparticipantrecognizerecognizationdistractiondistractaddict17

addictivedangerModule3ComposecompositionmusicianmusicaldirectordirectiondirectlosslosttouristtourismtalentedtalentinfluencerecordmixtureModule4observeobservationexpressionexpressrealityrealizerealdestroydestroyerdestroydislikeartistartartisticcolorfulcolordelightfuldelighteddelightModule5EconomyeconomiceconomistpoliticspoliticpoliticiancongratulationcongratulateachievedisbeliefbeliefbelievebelievableculturalculturemulticulturalproduceproductionproductModule6ComedytragedyactressactoractmasterpiecemasterinterestinterestedinterestingmovingoccasionallyoccasionaloccasionargueargumententertainingentertainentertainmentModule1SituatedsituationlocatedlocationsymbolsymbolicagreementdisagreerepresentproduceproductiongovernmentModule2HungerpovertydevelopmentdevelopingdevelopededucationhomelesssimilarsimilarlycrowdedunfortunateunfortunatelyfortunetransportpollutedpollutionModule3ExperiencedviolenteruptpossibilitypossiblyimpossibleterrifyingterrifiedluckilyluckactivelyactivityoccurredoccurredstruckstruckthankfullyhopefullysadlysadnessModule4FrighteningfrightenedfrightenstrengthstrengthenvironmentpollutedpollutionmajorityconcernedurgentcomplaintabsolutelyprotectModule5Equallyequalityimportancestressfulstress-fullyresigninfluenthonestyhonestlyjusticecontributioninventioninventorModule6AccommodationconstructionhistorichistorynarrowlyglobalobservefoggyPredictpredictionriskyrelyreliableunloaddownloadpowerfuldisabilitydefinitelyeventuallyPermittedpermittingpermissionreceivelimitedlimitlessimpressiveimpressionconvenienceinconvenientinconvenienceexploreexplorationreactionsolutionmoodyregistercommunicationunconsciousinformaltraditionallytraditionalthreateningthreatenpanickedpanickinginvitationperformancesociallysocietyapplauseequalityequally18

LeadingleaderleadershipeducateeducationoriginalphysicalphysicallymentalmentallygraduationpersonallypersonalityrelativerelativelyrelaterelatedrelationexplodeSurroundingsurroundingshillynarrowlydistanceexploitforbadeforbiddenNaturallynaturalFrightenedfrightenfrighteningexistenceexistentsharplysharpenmysteriousadaptdestructpredictablepredictpredictionindicatefortunefortunatelyunfortunate英必五点词变UnitThegreatscientists词变18.science(n.)科—scientific(a.)19.analysis(n.)分—analyze(v.)分20.attendance(n.)照；出席参（）21.pollution(n.)污染——pollute(v.)polluted（污染的）22.announcement(n.)宣布；告—announce(v.)宣布；通告23.inst