2541958
MODAL VERBS
- ABSENCE OF OBLIGATION: Don't have to, Needn't (without to)
- POSSIBILITY: May, Might, Could (Present and Future)
- PROHIBITON: Mustn't
- OBLIGATION: Must, Have to Need to
- PERMISSION: Can (present), May (present, more formal than Can), Could (permission in general, also in the past)
- ADVICE AND RECOMMENDATION: Ought to, Should
- ABILITY: Can (present), Could(past), be
able to (other tenses)
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