【高中英语】we arrived at work in the morning and foundWe arrived at work in the morning and found that somebody ________ into the office during the night.A,brokeB.had brokenC.has brokenD.was breaking选B.break不是短暂性动词吗,为什么

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【高中英语】we arrived at work in the morning and found
We arrived at work in the morning and found that somebody ________ into the office during the night.
A,broke
B.had broken
C.has broken
D.was breaking
选B.
break不是短暂性动词吗,为什么可以用完成时?

选B.完成时不只是表示持续性的动词,实际上几乎所有动作都是短暂的,比如 beat, take...等等.完成时主要表明动作已经完成并产生了影响或后果.如果只用动词的过去时,那么只是简单的陈述一个发生在过去的事.

这题选B,用了过去完成时.因为主句“我们来上班的时候” (we arrived at work...) 已经是过去时,而"有人破门而入办公室...“是在“我们上班的时候”之前的事,所以过去完成.