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　　【I'mamazedthatshemarriedhimsosoon.She----himverywell.Amustn'thaveknownBcan'thavegottoknowCdidn'thavetoknowCneedn'thaveknown】

　　I'mamazedthatshemarriedhimsosoon.She----himverywell.Amustn'thaveknown

　　Bcan'thavegottoknowCdidn'thavetoknowCneedn'thaveknown

1回答

2020-08-0700:18

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宋元力

　　不可能对他很了解

　　对“过去已发生事情”的口气较强的否定推测can't/couldn'thavedone.意为：根本不可能...

　　mustn'thavedone（不存在此用法）mustnhavedone.(肯定已.)

　　needn'thavedone...没必要已.

2020-08-07 00:21:42

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