English Grammar Rules
Browse all grammar topics with clear explanations and examples
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Modal Verbs
Can, could, may, might, must, should
Modal Verbs of Permission (can/may)
Asking for and giving permission with can/may
Modal Verbs of Advice (should/ought to)
Giving advice and recommendations with should/ought to
Modal Verbs of Ability (can/could/be able to)
Expressing ability with can, could, and be able to
Requests and Offers
Polite requests and offers: Can I...? Could you...? Would you like...? Shall I...?
Must vs Have to
Expressing obligation and necessity with must / have to / don't have to / mustn't
Modal Verbs of Probability (may/might/could/must)
Expressing degrees of certainty: may, might, could, must
Modal Verbs for Deduction
Making logical conclusions: must be, can't be, might be, could be
Modal Verbs: Obligation
Expressing obligation: must, have to, need to, should, ought to