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    精英家教网 > 高中英语 > 题目详情
    14．All the task          ahead of time，they decided to go on holiday for a week．（　　）
    A．had been finishedB．were finished
    C．having been finishedD．been finished

    分析 所有任务都提前完成，他们决定去度一个礼拜的假．

    解答 答案：C 题干中有逗号分隔，没有连词，要用非谓语动词；句中finish与task之间构成动宾关系，要用被动；句意表达的是已经完成的动作，要用分词的完成式；分词带有之间的逻辑宾语，是独立主格结构．故选C．

    点评 独立主格结构由两部分组成，前一部分是名词或者代词，后一部分是非谓语动词（不定式、现在分词、过去分词）或形容词、副词、名词或介词短语．独立主格结构本身不是句子，在句子中作状语，表时间、原因、条件、伴随、目的及状态等．

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