问题描述：
下面句中have 为什么用原型?
He also said that he had found five empty whisky bottles which the ghost must have drunk the night before.
还有这个问题 the night before 可不可以理解为-之前的的晚上
He also said that he had found five empty whisky bottles which the ghost must have drunk the night before.
还有这个问题 the night before 可不可以理解为-之前的的晚上
问题解答：
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