问题描述：
用do/did表示“确实”的意思时怎么判断人称时态
如“他的确知道”是 he does konw 还是 he does knows ,或者说“我过去的确知道”是 I did know 还是 I did known
如“他的确知道”是 he does konw 还是 he does knows ,或者说“我过去的确知道”是 I did know 还是 I did known
问题解答：
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