题目内容

6.The human body consists of organs,each ____a definite job to do.(  )
A.haveB.to haveC.hasD.having

分析 人体由很多器官组成,每个器官都有明确的功能.

解答 答案:D 句中有逗号分隔,没有连词,要用非谓语动词;have与each构成主谓关系,要用表示主动的现在分词,和each一起构成独立主格结构.故选D.

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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