She can't have been Danish. and She must have been Swedish.

问题描述:

She can't have been Danish. and She must have been Swedish.

她不可能曾经是丹麦人,她一定是瑞典人。

她从来没有去过丹麦,但她一定去过瑞典呆。

她不可能曾是丹麦人,不过可以肯定的是她曾去过瑞典。

她绝不可能到过丹麦,她一定瑞典呆过。

She can't have been Danish.and She must have been Swedish
Danish,Swedish是形容词表人或语言.而不能表国家
【她不会曾是丹麦人,她肯定曾是瑞典人】
【她以前不会是丹麦人,她以前肯定是瑞典人】
丹麦:Denmark
瑞典:Sweden

她不可能到过丹麦。她一定去过瑞典。

她没去丹麦必去瑞典 逻辑?