Mrs. Morrison invited us to the party, but our work ______, we politely refused

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问题 Mrs. Morrison invited us to the party, but our work ______, we politely refused her invitation.

选项 A、not being finished
B、was not finished
C、not having finished
D、had not been finished

答案 A

解析 本题测试的是独立主格结构的用法。全句的意思是:“莫里森夫人邀请我们去聚会,但是由于工作没有完成,我们婉言拒绝了她。”分词作状语时,其逻辑主语应与句子的主语一致,否则分词应带有自己的逻辑主语,构成独立主格结构。此时,分词的逻辑主语可以是分词的执行者或承受者,分词可以是现在分词或过去分词,也可以是完成式或被动式。此句中our work not being finished即为一个否定的独立主格结构, work是动作finish的承受者,所以用被动语态。同时,非谓语动词的否定式是在其前加not。因此,根据句意,应选答案A。
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