Modal Verbs Mind Map

modal verbsPart 1

Cuevas Rodríguez Humberto Daniel

Should / Shouldn't have past participle

Don't have to, Don't need to, Needn't

Should, Ought to, Had better

May, Might, and Could

Must, Have to & Need to

Mustn't & Can't

Mustn't Often means that the action is prohibited, illegal or dangerous. Is very categorical and strict, it sounds like instructing a little child. Can't Expresses witholding permission, and tells us that something is against the rules. Can't is more informal.

Must Must + base form to express personal obligation in the present or the future. Have to Have to +base form to express external obigation in the present or the future. Need to Need to + base form to express necessity in the present or the future.

Should have past participle Things that were ideal or a good idea in the past but wich didn't happen. It can express regret. Expression of regreat Shouldn't have past participle To express regret for somethingthat yo did do but wish you hadn't.

To express possibility in the present or the future. May 60 -70% certain to happen Might 40-50% certain to happen Could 50% certain to happen He could be at home now

Don't have to There is not a obligation. You don't have to call us again. Don't need to She doesn't need to buy us presents. Needn't + base form You needn't worry. Everything is under control

Should To ask for or give advice. To express opinion. It is your opinion. Probability. Ought to General obligation Probability(is not very common) Had better It often expresses threat or warning. It refers to the present or the future, NOT the past.

MODAL VERBS PART 2

May, Might, and Could + have + past participle

Must, Can't, Couldn't + have + past participle

Must & Can't

May/Might + have + past participle To express a possibility in the past. Could + have + past participle Express thats something was possible in the past but it didn't eventually happened.

Must To express a possitive deduction about the present or the future. We are almost certain that something is true. Can't To express a negative deduction about the present or future. We believe that something is impossible.

Must + have + past participle To express a positive deduction about the past. We are almost certain that something happened in the past. Can't/Couldn´t Express a negative deduction about the past. We are almost certain that something didn't happened.