One of the children must have hidden it up.这是现在完成时吗?这个have仅仅是助动词表完成的意思吗?
如题.会不会是其他的用法?
人气:409 ℃ 时间:2020-05-14 17:22:36
解答
嗯.情态动词+动词完成时.表示对过去的动作的推测
要是表示对现在的推测就不用have done了 就应该用must be doing (最常见的比如说 you must be joking)
所以have就是现在完成时的助动词呐 ∩_∩
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