can’t +have done

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can’t +have done
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can’t +have done
can’t +have done

can’t +have done
表否定的现在完成时推测

不能被完成

过去不可能做过某事

表示不能做却作了,是虚拟语气

can't have 应该没有, 不可能有
he can't have drawn that - 那不可能是他画的

表示对过去的否定

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