12 topics

Modality (Modal Verbs)

Modal and semi-modal verbs expressing ability, permission, obligation, possibility, deduction, and advice. Covers can, could, must, should, may, might, will, would, shall, and semi-modals.

A2 B1 B2 C1

Topics in this Category

  1. 1
    A2

    Can / Can't

    Can and can't are essential modal verbs at A2 level used to express ability, permission, and general possibility. Learn their structure, key uses, and common mistakes.
  2. 2
    A2

    Must / Mustn't

    Must and mustn't express strong obligation and prohibition at A2 level. Learn when something is required by rules or personal necessity, and when it is strictly forbidden.
  3. 3
    A2

    Should / Shouldn't

    Should and shouldn't are key A2 modal verbs for giving and asking advice, expressing moral duty, and stating expectations. Gentler than must, they are essential for everyday communication.
  4. 4
    B1

    Might / May

    Might and may express possibility in present and future contexts. Learn when to use each, how to form past possibility with might/may have, and how may doubles as a formal permission marker.
  5. 5
    B1

    Have To / Don't Have To

    Have to and don't have to are B1 expressions for external obligation and lack of necessity. Unlike must, have to works in all tenses and is essential for talking about rules and requirements.
  6. 6
    B1

    Could

    Could serves as past ability, polite request, present possibility, and conditional ability. Learn when to use could vs was able to, and how could have expresses unrealised past possibilities.
  7. 7
    B1

    Shall

    Shall is used for offers (Shall I?) and suggestions (Shall we?) in everyday British English, and for binding obligations in formal and legal contexts.
  8. 8
    B2

    Must / Can't for Logical Deduction

    Use must and can't to express logical deduction — must for near-certain positive conclusions and can't for near-certain negative ones. Includes past deductions with must have and can't have.
  9. 9
    B2

    Should Have / Could Have / Would Have

    Should have, could have, and would have express regret, missed opportunities, and hypothetical past results. Essential for third conditionals and reflecting on past decisions.
  10. 10
    B2

    Needn't / Needn't Have

    Needn't expresses absence of obligation (it's not necessary). Needn't have + past participle shows an action was done unnecessarily. Learn the key contrast with mustn't and didn't need to.
  11. 11
    C1

    Modal Perfect for Deduction (must have, can't have, might have)

    Master the full spectrum of modal perfects for past deduction: must have (near-certain), can't have (impossible), might have (uncertain), should have (expected), and modal perfect continuous.
  12. 12
    C1

    Semi-Modals (be about to, be supposed to, be bound to)

    Semi-modals like be about to, be supposed to, be bound to, and had better express nuanced modal meanings around timing, expectation, certainty, and obligation that core modals cannot.