"Verb Modals" is expressing mood or attitude of a speaker .
Commonly used models
can, could, will, would, shall, should, may, might, must, ought to, need, dare etc.
- Suggestion, advice, duty (obligation)
- Intention/ willingness
- Modals are always followed by a main verb but in question tag it can be used alone.
- Modals don't change it's form with the person or main verb of the subject.
- The main verb used after a modal must be in root form.
Permission (may, can, could)
- can: informal (not so polite)
- may: polite
- could: more polite
Ability (can, could, be able to)
- can: be able to, be capable of, know how to
- could: ability, expressed in past
- can: opportunity
- Milan can solve the problem.
(Milan is able to solve this problem.)
(Milan knows how to solve this problem)
- Be able to can be used in any tense.
Probability (may, might, could)
- could: a weaker possibility
- might: a weak possibility
- may: a good possibility
Intention (will, shall)
- shall: I shall ring you up in the evening.
- will: He will help you in the business.
Request (would, won't, can, could)
- would: polite request
- could: polite request
- can: formal request
- Not to be afraid to do something
- There is no necessity or compulsion