She must have read the novel last week,didn't she? 如根据last week用过去时,那陈述句中为什么用have?
问题描述：
She must have read the novel last week,didn't she? 如根据last week用过去时,那陈述句中为什么用have?
答
must have 表示对过去的推测,可译为“过去一定做过…”