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题目
题型:不详难度:来源:
Global Health officials have been closely monitoring a new virus related to SARS that is believed ______ at least one person in Saudi Arabia.
A.to killB.to be killing
C.to have killedD.kill

答案
C
解析

试题分析:考查非谓语动词中不定式用法。本题考查了believe的固定搭配,be believed to do sth,如果不定式的动作是已经完成的动作,就是还有完成时to have done;如果是被动关系就使用被动式to be done。句意:世界健康官员一直都在监视一种新型的与SARS有关的病毒,这种病毒据说已经***死了至少一个人。故该句表示的是已经完成的动作,故C正确。
点评:本题重在理解非谓语动词的用法,非谓语动词是高考语法点的重中之重。把握好以下的知识:to do 表目的、将来;doing 表主动、伴随;done表被动、完成。同时答题步骤为:1.判断是否为非谓语动词,看是否有连词。2.找逻辑主语。3.判断逻辑主语与非谓语动词的关系。4.看是否非谓语动词动作发生在主句谓语动作之前,如果是之前,就用完成式的形式。
核心考点
试题【Global Health officials have been closely monitoring a new virus related to SARS】;主要考察你对现在分词等知识点的理解。[详细]
举一反三
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A.DeterminingB.To determineC.Being determinedD.Determined

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A.DetermineB.Having been determined
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A.Judging fromB.To judge from
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