can't have done 的用法
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:英语作业 时间:2024/05/04 22:53:45
can't have done 的用法
这是情态动词表示对过去的推测的句型,“当时不可能做过...”
如 He can't have eaten lunch.他当时不可能吃过午饭了.
如 He can't have eaten lunch.他当时不可能吃过午饭了.
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