2020年成人高考專升本英語詞匯辨析專項(xiàng)練習(xí)1.Choosethewordthatbestcompletesthesentence:"Thecompanyislookingforsomeonewithexperiencein__________marketing."A.commercialB.commercializeC.commercializationD.commercially【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："commercial"作為形容詞意為"商業(yè)的"；"commercialize"為動(dòng)詞意為"商業(yè)化"；"commercialization"為名詞意為"商業(yè)化"；"commercially"為副詞意為"商業(yè)上"。句意為"公司正在尋找有商業(yè)營銷經(jīng)驗(yàn)的人"，需用形容詞修飾名詞"marketing"，故選A。解題思路：根據(jù)空格后為名詞"marketing"，判斷需填形容詞，排除動(dòng)詞、名詞、副詞。易錯(cuò)提醒：易混淆C和D選項(xiàng)，注意詞性不同。記憶技巧：記形容詞后接名詞。2."Despitethedifficulties,she__________managedtocompletetheprojectontime."A.stillB.alsoC.evenD.already【答案】C【解析】正確答案為C。知識(shí)點(diǎn)闡述："still"意為"仍然"；"also"意為"也"；"even"意為"甚至"；"already"意為"已經(jīng)"。句意為"盡管困難重重，她甚至設(shè)法按時(shí)完成了項(xiàng)目"，表示轉(zhuǎn)折遞進(jìn)關(guān)系，故選C。解題思路：根據(jù)句意強(qiáng)調(diào)困難與完成的關(guān)系，"even"最符合遞進(jìn)語氣。易錯(cuò)提醒：易誤用"still"表示持續(xù)，此處需遞進(jìn)。記憶技巧：even表示強(qiáng)調(diào)。3.Thenewpolicywill__________affectemployeesinalldepartments.A.individuallyB.individuallyC.individualD.individualize【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："individually"意為"單獨(dú)地"；"individual"為形容詞；"individualize"為動(dòng)詞。句意為"新政策將單獨(dú)影響所有部門的員工"，需副詞修飾動(dòng)詞"affect"，故選A。解題思路：根據(jù)動(dòng)詞后需副詞修飾，排除形容詞和動(dòng)詞。易錯(cuò)提醒：易混淆A和C，注意詞性。記憶技巧：副詞后綴-ly。4.Choosethewordthatbestcompletesthesentence:"Hehasa__________knowledgeofeconomics."A.extensiveB.extensivelyC.extensiveD.extent【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："extensive"作形容詞意為"廣泛的"；"extensively"作副詞意為"廣泛地"；"extent"為名詞。句意為"他對(duì)經(jīng)濟(jì)學(xué)有廣泛的知識(shí)"，修飾名詞"knowledge"需形容詞，故選A。解題思路：根據(jù)空格后為名詞，判斷需填形容詞。易錯(cuò)提醒：易混淆A和B，注意詞性。記憶技巧：extensive=wide。5.Themanageraskedfora__________reportonthequarterlysalesfigures.A.conciseB.conciselyC.conciseD.conciseness【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："concise"作形容詞意為"簡潔的"；"concisely"作副詞；"conciseness"為名詞。句意為"經(jīng)理要求一份關(guān)于季度銷售額的簡潔報(bào)告"，修飾名詞"report"需形容詞，故選A。解題思路：根據(jù)空格后為名詞，判斷需填形容詞。易錯(cuò)提醒：易混淆A和B，注意詞性。記憶技巧：concise=short+clear。6."Theexperimentprovedthatthetheorywas__________correct."A.merelyB.merelyC.merelyD.merely【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："merely"意為"僅僅"；"merely"為副詞。句意為"實(shí)驗(yàn)證明該理論僅僅是正確的"，表示限制語氣，故選A。解題思路：根據(jù)句意強(qiáng)調(diào)程度限制，"merely"最符合。易錯(cuò)提醒：易誤用其他副詞。記憶技巧：merely=just。7.Choosethewordthatbestcompletesthesentence:"Sheis__________interestedinpainting."A.speciallyB.speciallyC.specialD.specially【答案】C【解析】正確答案為C。知識(shí)點(diǎn)闡述："specially"意為"特別地"；"special"作形容詞意為"特別的"。句意為"她對(duì)繪畫特別感興趣"，修飾形容詞"interested"需副詞，但此處"special"作形容詞更符合。解題思路：根據(jù)空格后為形容詞，判斷需填形容詞。易錯(cuò)提醒：易混淆副詞和形容詞。記憶技巧：special=particular。8."Thecommitteedecidedto__________theproposaluntilfurthernotice."A.postponeB.postponeC.postponementD.postponedly【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："postpone"為動(dòng)詞意為"推遲"；"postponement"為名詞；"postponedly"不存在。句意為"委員會(huì)決定推遲提案"，需動(dòng)詞形式，故選A。解題思路：根據(jù)空格后為名詞"notice"，判斷需填動(dòng)詞。易錯(cuò)提醒：易混淆動(dòng)詞和名詞。記憶技巧：postpone=delay。9.Choosethewordthatbestcompletesthesentence:"Thebookprovides__________informationonthetopic."A.sufficientB.sufficientlyC.sufficientD.sufficiency【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："sufficient"作形容詞意為"足夠的"；"sufficiently"作副詞；"sufficiency"為名詞。句意為"這本書提供了足夠的關(guān)于該主題的信息"，修飾名詞"information"需形容詞，故選A。解題思路：根據(jù)空格后為名詞，判斷需填形容詞。易錯(cuò)提醒：易混淆A和B，注意詞性。記憶技巧：sufficient=enough。10."Heacted__________,asifhekneweverything."A.confidentlyB.confidentlyC.confidentD.confidence【答案】C【解析】正確答案為C。知識(shí)點(diǎn)闡述："confidently"作副詞意為"自信地"；"confident"作形容詞意為"自信的"；"confidence"為名詞。句意為"他表現(xiàn)得自信滿滿"，修飾動(dòng)詞"acted"需副詞，但此處"confident"作形容詞更符合。解題思路：根據(jù)空格后為介詞"asif"，判斷需填形容詞。易錯(cuò)提醒：易混淆副詞和形容詞。記憶技巧：confident=assured。11.Choosethewordthatbestcompletesthesentence:"Theathletehas__________trainingtoimprovehisperformance."A.continuousB.continuouslyC.continuousD.continuity【答案】B【解析】正確答案為B。知識(shí)點(diǎn)闡述："continuously"作副詞意為"連續(xù)地"；"continuous"作形容詞；"continuity"為名詞。句意為"運(yùn)動(dòng)員連續(xù)訓(xùn)練以提升表現(xiàn)"，修飾動(dòng)詞"training"需副詞，故選B。解題思路：根據(jù)動(dòng)詞后需副詞修飾，排除形容詞和名詞。易錯(cuò)提醒：易混淆B和C，注意詞性。記憶技巧：continuously=withoutbreak。12."Thenewpolicywill__________affectemployeesinalldepartments."A.individuallyB.individuallyC.individualD.individualize【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："individually"意為"單獨(dú)地"；"individual"為形容詞；"individualize"為動(dòng)詞。句意為"新政策將單獨(dú)影響所有部門的員工"，需副詞修飾動(dòng)詞"affect"，故選A。解題思路：根據(jù)動(dòng)詞后需副詞修飾，排除形容詞和動(dòng)詞。易錯(cuò)提醒：易混淆A和C，注意詞性。記憶技巧：副詞后綴-ly。13."Shehasa__________knowledgeofhistory."A.vastB.vastlyC.vastD.vastness【答案】C【解析】正確答案為C。知識(shí)點(diǎn)闡述："vast"作形容詞意為"浩瀚的"；"vastly"作副詞；"vastness"為名詞。句意為"她對(duì)歷史有浩瀚的知識(shí)"，修飾名詞"knowledge"需形容詞，故選C。解題思路：根據(jù)空格后為名詞，判斷需填形容詞。易錯(cuò)提醒：易混淆C和B，注意詞性。記憶技巧：vast=large。14.Choosethewordthatbestcompletesthesentence:"Thereportwas__________detailedandaccurate."A.bothB.bothC.bothD.both【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："both"意為"兩者都"；"both"為副詞。句意為"報(bào)告既詳細(xì)又準(zhǔn)確"，表示兩者都，故選A。解題思路：根據(jù)句意強(qiáng)調(diào)并列關(guān)系，"both"最符合。易錯(cuò)提醒：易誤用其他連詞。記憶技巧：both=two+and。15."Themanageraskedfora__________reportontheannualsalesfigures."A.briefB.brieflyC.briefD.brieftness【答案】C【解析】正確答案為C。知識(shí)點(diǎn)闡述："brief"作形容詞意為"簡潔的"；"briefly"作副詞；"brieftness"不存在。句意為"經(jīng)理要求一份關(guān)于年度銷售額的簡潔報(bào)告"，修飾名詞"report"需形容詞，故選C。解題思路：根據(jù)空格后為名詞，判斷需填形容詞。易錯(cuò)提醒：易混淆C和B，注意詞性。記憶技巧：brief=short。16.Choosethewordthatbestcompletesthesentence:"Heis__________sureofhissuccess."A.absolutelyB.absolutelyC.absoluteD.absoluteness【答案】C【解析】正確答案為C。知識(shí)點(diǎn)闡述："absolutely"作副詞意為"絕對(duì)地"；"absolute"作形容詞意為"絕對(duì)的"；"absoluteness"為名詞。句意為"他對(duì)成功絕對(duì)有把握"，修飾形容詞"sure"需副詞，但此處"absolute"作形容詞更符合。解題思路：根據(jù)空格后為形容詞，判斷需填形容詞。易錯(cuò)提醒：易混淆C和A，注意詞性。記憶技巧：absolute=100%.17."Thecommitteedecidedto__________theproposaluntilfurthernotice."A.postponeB.postponeC.postponementD.postponedly【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："postpone"為動(dòng)詞意為"推遲"；"postponement"為名詞；"postponedly"不存在。句意為"委員會(huì)決定推遲提案"，需動(dòng)詞形式，故選A。解題思路：根據(jù)空格后為名詞"notice"，判斷需填動(dòng)詞。易錯(cuò)提醒：易混淆動(dòng)詞和名詞。記憶技巧：postpone=delay。18.Choosethewordthatbestcompletesthesentence:"Thebookprovides__________informationonthetopic."A.sufficientB.sufficientlyC.sufficientD.sufficiency【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："sufficient"作形容詞意為"足夠的"；"sufficiently"作副詞；"sufficiency"為名詞。句意為"這本書提供了足夠的關(guān)于該主題的信息"，修飾名詞"information"需形容詞，故選A。解題思路：根據(jù)空格后為名詞，判斷需填形容詞。易錯(cuò)提醒：易混淆A和B，注意詞性。記憶技巧：sufficient=enough。19."Heacted__________,asifhekneweverything."A.confidentlyB.confidentlyC.confidentD.confidence【答案】C【解析】正確答案為C。知識(shí)點(diǎn)闡述："confidently"作副詞意為"自信地"；"confident"作形容詞意為"自信的"；"confidence"為名詞。句意為"他表現(xiàn)得自信滿滿"，修飾動(dòng)詞"acted"需副詞，但此處"confident"作形容詞更符合。解題思路：根據(jù)空格后為介詞"asif"，判斷需填形容詞。易錯(cuò)提醒：易混淆副詞和形容詞。記憶技巧：confident=assured。20.Choosethewordthatbestcompletesthesentence:"Theathletehas__________trainingtoimprovehisperformance."A.continuousB.continuouslyC.continuousD.continuity【答案】B【解析】正確答案為B。知識(shí)點(diǎn)闡述："continuously"作副詞意為"連續(xù)地"；"continuous"作形容詞；"continuity"為名詞。句意為"運(yùn)動(dòng)員連續(xù)訓(xùn)練以提升表現(xiàn)"，修飾動(dòng)詞"training"需副詞，故選B。解題思路：根據(jù)動(dòng)詞后需副詞修飾，排除形容詞和名詞。易錯(cuò)提醒：易混淆B和C，注意詞性。記憶技巧：continuously=withoutbreak。21.Choosethecorrectpair:"Thedata__________analyzedtodrawconclusions."A.mustbeB.needtobeC.shouldD.will【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："mustbe"表示必須；"needtobe"表示需要；"should"表示應(yīng)該；"will"表示將來。句意為"數(shù)據(jù)必須被分析以得出結(jié)論"，表示強(qiáng)制性義務(wù)，故選A。解題思路：根據(jù)句意強(qiáng)調(diào)必要性，"mustbe"最符合。易錯(cuò)提醒：易混淆A和B，注意語氣強(qiáng)度。記憶技巧：must=obligation。22."Thereport__________completedbyFriday,butitisnotfinishedyet."A.shouldhavebeenB.musthavebeenC.mustbeD.shouldbe【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："shouldhavebeen"表示本應(yīng)完成但未完成；"musthavebeen"表示肯定完成；"mustbe"表示必須；"shouldbe"表示應(yīng)該。句意為"報(bào)告本應(yīng)在周五完成但還沒完成"，表示本應(yīng)完成未完成，故選A。解題思路：根據(jù)句意表示本應(yīng)完成但未完成，"shouldhavebeen"最符合。易錯(cuò)提醒：易混淆A和B，注意時(shí)態(tài)。記憶技巧：shouldhave=oughttohave.23.Choosethecorrectpair:"You__________morecarefulwhendriving."A.mustbeB.needtobeC.shouldbeD.willbe【答案】C【解析】正確答案為C。知識(shí)點(diǎn)闡述："mustbe"表示必須；"needtobe"表示需要；"shouldbe"表示應(yīng)該；"willbe"表示將來。句意為"你開車時(shí)應(yīng)該更小心"，表示建議或義務(wù)，故選C。解題思路：根據(jù)句意表示建議，"shouldbe"最符合。易錯(cuò)提醒：易混淆C和A，注意語氣。記憶技巧：should=advice.24."Theproject__________delayedduetolackofresources."A.musthavebeenB.shouldhavebeenC.mustbeD.shouldbe【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："musthavebeen"表示肯定完成；"shouldhavebeen"表示本應(yīng)完成但未完成；"mustbe"表示必須；"shouldbe"表示應(yīng)該。句意為"項(xiàng)目因資源不足而肯定被延誤了"，表示推測完成，故選A。解題思路：根據(jù)句意表示推測完成，"musthavebeen"最符合。易錯(cuò)提醒：易混淆A和B，注意語氣。記憶技巧：musthave=definitely.25.Choosethecorrectpair:"She__________moreexperiencedafterworkinghereforayear."A.mustbeB.needtobeC.shouldbeD.willbe【答案】D【解析】正確答案為D。知識(shí)點(diǎn)闡述："mustbe"表示必須；"needtobe"表示需要；"shouldbe"表示應(yīng)該；"willbe"表示將來。句意為"她在這里工作一年后將會(huì)更經(jīng)驗(yàn)豐富"，表示將來狀態(tài)，故選D。解題思路：根據(jù)句意表示將來狀態(tài)，"willbe"最符合。易錯(cuò)提醒：易混淆D和A，注意時(shí)態(tài)。記憶技巧：will=future.26."Thereport__________completedbyFriday,butitisnotfinishedyet."A.shouldhavebeenB.musthavebeenC.mustbeD.shouldbe【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："shouldhavebeen"表示本應(yīng)完成但未完成；"musthavebeen"表示肯定完成；"mustbe"表示必須；"shouldbe"表示應(yīng)該。句意為"報(bào)告本應(yīng)在周五完成但還沒完成"，表示本應(yīng)完成未完成，故選A。解題思路：根據(jù)句意表示本應(yīng)完成但未完成，"shouldhavebeen"最符合。易錯(cuò)提醒：易混淆A和B，注意時(shí)態(tài)。記憶技巧：shouldhave=oughttohave.27.Choosethecorrectpair:"You__________morecarefulwhendriving."A.mustbeB.needtobeC.shouldbeD.willbe【答案】C【解析】正確答案為C。知識(shí)點(diǎn)闡述："mustbe"表示必須；"needtobe"表示需要；"shouldbe"表示應(yīng)該；"willbe"表示將來。句意為"你開車時(shí)應(yīng)該更小心"，表示建議或義務(wù)，故選C。解題思路：根據(jù)句意表示建議，"shouldbe"最符合。易錯(cuò)提醒：易混淆C和A，注意語氣。記憶技巧：should=advice.28."Theproject__________delayedduetolackofresources."A.musthavebeenB.shouldhavebeenC.mustbeD.shouldbe【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："musthavebeen"表示肯定完成；"shouldhavebeen"表示本應(yīng)完成但未完成；"mustbe"表示必須；"shouldbe"表示應(yīng)該。句意為"項(xiàng)目因資源不足而肯定被延誤了"，表示推測完成，故選A。解題思路：根據(jù)句意表示推測完成，"musthavebeen"最符合。易錯(cuò)提醒：易混淆A和B，注意語氣。記憶技巧：musthave=definitely.29.Choosethecorrectpair:"She__________moreexperiencedafterworkinghereforayear."A.mustbeB.needtobeC.shouldbeD.willbe【答案】D【解析】正確答案為D。知識(shí)點(diǎn)闡述："mustbe"表示必須；"needtobe"表示需要；"shouldbe"表示應(yīng)該；"willbe"表示將來。句意為"她在這里工作一年后將會(huì)更經(jīng)驗(yàn)豐富"，表示將來狀態(tài)，故選D。解題思路：根據(jù)句意表示將來狀態(tài)，"willbe"最符合。易錯(cuò)提醒：易混淆D和A，注意時(shí)態(tài)。記憶技巧：will=future.30."Thecommitteedecidedto__________theproposaluntilfurthernotice."A.postponeB.postponeC.postponementD.postponedly【答案】A【解析】正確答案為A。知識(shí)點(diǎn)闡述："postpone"為動(dòng)詞意為"推遲"；"postponement"為名詞；"postponedly"不存在。句意為"委員會(huì)決定推遲提案"，需動(dòng)詞形式，故選A。解題思路：根據(jù)空格后為名詞"notice"，判斷需填動(dòng)詞。易錯(cuò)提醒：易混淆動(dòng)詞和名詞。記憶技巧：postpone=delay.31."Thenewpolicywill__________affectemployeesinalldepartments."√【答案】√【解析】正確答案為√。知識(shí)點(diǎn)闡述："affect"意為"影響"。句意為"新政策將影響所有部門員工"，表述正確。解題思路：根據(jù)句意直接判斷為正確表述。易錯(cuò)提醒：注意無錯(cuò)誤點(diǎn)。記憶技巧：affect=impact.32.Choosethewordthatbestcompletesthesentence:"Thebookprovides__________informationonthetopic."A.sufficientB.sufficientlyC.sufficientD.sufficiency【答案】×【解析】正確答案為×。知識(shí)點(diǎn)闡述："sufficient"作形容詞意為"足夠的"；"sufficiently"作副詞；"sufficiency"為名詞。句意為"這本書提供了足夠的關(guān)于該主題的信息"，修飾名詞"information"需形容詞，但B選項(xiàng)為副詞，故錯(cuò)誤。解題思路：根據(jù)空格后為名詞，判斷需填形容詞。易錯(cuò)提醒：易誤用副詞。記憶技巧：形容詞后接名詞。33."Heacted__________,asifhekneweverything."A.confidentlyB.confidentlyC.confidentD.confidence【答案】×【解析】正確答案為×。知識(shí)點(diǎn)闡述："confidently"作副詞意為"自信地"；"confident"作形容詞意為"自信的"；"confidence"為名詞。句意為"他表現(xiàn)得自信滿滿"，修飾動(dòng)詞"acted"需副詞，但C選項(xiàng)為形容詞，故錯(cuò)誤。解題思路：根據(jù)空格后為介詞"asif"，判斷需填形容詞。易錯(cuò)提醒：易誤用形容詞。記憶技巧：副詞后綴-ly。34."Theexperimentprovedthatthetheorywas__________correct."A.merelyB.merelyC.merelyD.merely【答案】×【解析】正確答案為×。知識(shí)點(diǎn)闡述："merely"意為"僅僅"；"merely"為副詞。句意為"實(shí)驗(yàn)證明該理論僅僅是正確的"，表示限制語氣，但此處"merely"可能過于絕對(duì)，故錯(cuò)誤。解題思路：根據(jù)句意可能需更靈活表達(dá)，"merely"可能過于絕對(duì)。易錯(cuò)提醒：注意語氣強(qiáng)度。記憶技巧：merely=just.35."Theathletehas__________trainingtoimprovehisperformance."A.continuousB.continuouslyC.continuousD.continuity【答案】×【解析】正確答案為×。知識(shí)點(diǎn)闡述："continuously"作副詞意為"連續(xù)地"；"continuous"作形容詞；"continuity"為名詞。句意為"運(yùn)動(dòng)員連續(xù)訓(xùn)練以提升表現(xiàn)"，修飾動(dòng)詞"training"需副詞，但C選項(xiàng)為形容詞，故錯(cuò)誤。解題思路：根據(jù)動(dòng)詞后需副詞修飾，排除形容詞和名詞。易錯(cuò)提醒：易誤用形容詞。記憶技巧：副詞后綴-ly。36."Thereportwas__________detailedandaccurate."A.bothB.bothC.bothD.both【答案】×【解析】正確答案為×。知識(shí)點(diǎn)闡述："both"意為"兩者都"；"both"為副詞。句意為"報(bào)告既詳細(xì)又準(zhǔn)確"，表示兩者都，但此處"both"可能需與and搭配，故錯(cuò)誤。解題思路：根據(jù)句意需與and搭配，"both"單獨(dú)使用不完整。易錯(cuò)提醒：注意搭配。記憶技巧：both+and.37.Choosethewordthatbestcompletesthesentence:"Sheis__________interestedinpainting."A.speciallyB.speciallyC.specialD.specially【答案】×【解析】正確答案為×。知識(shí)點(diǎn)闡述："specially"意為"特別地"；"special"作形容詞意為"特別的"。句意為"她對(duì)繪畫特別感興趣"，修飾形容詞"interested"需副詞，但C選項(xiàng)為形容詞，故錯(cuò)誤。解題思路：根據(jù)空格后為形容詞，判斷需填副詞。易錯(cuò)提醒：易誤用形容詞。記憶技巧：副詞后綴-ly。38."Thecommitteedecidedto__________theproposaluntilfurthernotice."A.postponeB.postponeC.postponementD.postponedly【答案】×【解析】正確答案為×。知識(shí)點(diǎn)闡述："postpone"為動(dòng)詞意為"推遲"；"postponement"為名詞；"postponedly"不存在。句意為"委員會(huì)決定推遲提案"，需動(dòng)詞形式，但C選項(xiàng)為名詞，故錯(cuò)誤。解題思路：根據(jù)空格后為名詞"notice"，判斷需填動(dòng)詞。易錯(cuò)提醒：易混淆動(dòng)詞和名詞。記憶技巧：postpone=delay.39."Thenewpolicywill__________affectemployeesinalldepartments."A.individuallyB.individuallyC.individualD.individualize【答案】×【解析】正確答案為×。知識(shí)點(diǎn)闡述："individually"意為"單獨(dú)地"；"individual"為形容詞；"individualize"為動(dòng)詞。句意為"新政策將單獨(dú)影響所有部門的員工"，需副詞修飾動(dòng)詞"affect"，但C選項(xiàng)為形容詞，故錯(cuò)誤。解題思路：根據(jù)動(dòng)詞后需副詞修飾，排除形容詞和動(dòng)詞。易錯(cuò)提醒：易誤用形容詞。記憶技巧：副詞后綴-ly。40."Thebookprovides__________informationonthetopic."A.vastB.vastlyC.vastD.vastness【答案】×【解析】正確答案為×。知識(shí)點(diǎn)闡述："vast"作形容詞意為"浩瀚的"；"vastly"作副詞；"vastness"為名詞