单选题
Having finished lunch, the case was discussed .
A、
they discussed the case
B、
they had discussed the case
C、
the case was discussed
D、
the case had been discussed
【正确答案】
A
【答案解析】
结构应用。现在分词短语作状语时,其逻辑主语应与句中主语一致。句中只能是they在discuss,分词逻辑主语是they,句子主语也应是they;所以选项c、D均不对;而前半句用的是现在分词的完成式,表示动作发生在谓语动词表示的动作之前,所以选项A是答案。
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