请问各位: 1.He is wearing a gold band on his fourth finger. He [must be married]. []中可以用过去式吗? =must have been married,如果是因为正在戴上金指环=结婚正在 进行所以用现在式,要是这样不是该用进行式比较妥当不是吗? 2.想请问各位may & might好像前者是现在式但后者是过去式,但书上都用在相同时态,并 用have(had)+been+past participle来区别时态,该如何去理解呢?