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MODAL VERBS. Uses of MUST and its opposites. Major Functions of Modal Verbs. ABILITY – can, be able to POSSIBILITY – can, could, may, might PERMISSION – can, could, may, might REQUESTS and OFFERS – would/could, shall, can CERTAINITY and ASSUMPTION – must, can’t, couldn’t, will, should
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Major Functions of Modal Verbs • ABILITY – can, be able to • POSSIBILITY – can, could, may, might • PERMISSION – can, could, may, might • REQUESTS and OFFERS – would/could, shall, can • CERTAINITY and ASSUMPTION – must, can’t, couldn’t, will, should • PRESENT OBLIGATION – ought to, should, must, have to, need to, be to, will. Shall • PAST OBLIGATION – had to, should have, needed to, was/were to • ABSENCE of OBLIGATION – don’t have to/don’t need to, won’t have to/won’t need to • needn’t, didn’t have to/didn’t need to, needn’t have • ADVICE, RECOMMENDATION, SUGGESTION – had better, must, ought to/should, • Ought to have, should have, might/could, hadn’t better, shall • HABBIT, Typical Behavior, CRITICISM – would, ought to/should, can/could/might