推荐回答（1个）
今日得闲,让我多聊几句:
大多数的情态助动词具有一词多义的特征,就以表示推测性用法为例:
表示有"可能 "的might, may, could, can;表示 "很有可能"的should ,ought to,would,will;表示"最肯定"的must等。
假设有如下情景:A说" Someone has broken the window" B的回答可能是:
It might/may/could/can/should/ought to/would/ will/must be Tom.
一般来说,might表示可能性程度最低,must表示的程度最高,其程度排列由低而高。
说明一点: can,could多用于表示否定性的推测(或疑问):He can't be there now. The moon can't always be at the full.
He couldn't stay there yesterday. He can't have stayed there yesterday.
其他例句:
Can this be true? --It can't be true.
Where can he have got to?
There must be something wrong.
There will be still some shops left open.
You must be joking.
She must have been very young when she got married.
一时半会讲不完情态动词表示推测在不同句型的用法,就补充这些作罢!
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