优胜教育表推测时，英语中只使用must,may,might,may not和cant。这五个表达的语气依次递减：must:一定（语气肯定）may：也许（不很肯定）might：或许（比may语气更弱）may not：也许不（表否定）cant：一定不（must的反义）推测现在的事情用must,may,might,may not和cant+do或bee.g.She must be at home now. The boy may play now.推测过去的事情用must,may,might,may not和cant+have donee.g.She might have been ill yesterday. He must have hold the party.情态动词must, can, could, may, might表推测的用法 情态动词中的must, can, could, may, might都表推测。其中must的可能性最大，can / could次之，may / might最小。具体用法如下：1.must的用
