核心问题
（A）He repented shooting the bird.
(B) He repented having shot the bird.
上面两个句子哪个是正确的？
词典解答
上面两个句子都是正确的。这就是说, repent, 如 admit, forget, remember, recall, recollect 一样, 既可接一般形式的动名词, 也可接完成形式的动名词, 而且意义相同:
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Don't you repent(of) having wasted your money so foolishly? (OSD) 你如此胡乱花钱，你不感到后悔吗？
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I deeply repent of having deceived my husband. 我为欺骗了丈夫而深深地感到忏悔。