Future probability
The following modals are used to express future probability.
- should
- ought to
- may
- might
- could
When the speaker is quite sure (future use)
- should
- ought to
Should and ought are used when the speaker is quite sure about something.
- Should they be studying three days before the exam?
- You ought to be able to find the subway station if you keep on walking to the end of this road.
When the speaker is less sure (future use)
- may
- might
- could
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