问题补充:
Having arrived at the station, .
A. it was found that the train had left
B. the train had left
C. the train was found left
D. he found that the train had left
答案:
A. it was found that the train had left
B. the train had left
C. the train was found left
(答案→)D. he found that the train had left
解析: “Having arrived”的逻辑主语是人,这里省略逻辑主语。所以判断主干的主语和其保持一致,故只能选D。