Category: Auxiliary and modal verbs
Modal Verbs
Modal verbs are a type of auxiliary verb that indicate modality, or the speaker's attitude towards the action or state described by the main verb.
Modal Verbs: might
Might with the indefinite infinitive is used to express possibility or uncertainty in the present or future.In the perfect infinitive form, might have is used to express possibility or uncertainty in the past
Modal Verbs: may
May is used with the indefinite infinitive to express permission, possibility or probability in the present. It can also be used to make polite requests.
Auxiliary Verbs: should and would
Should and would are both auxiliary verbs used in English grammar to indicate different meaningsShould is used to indicate: Advice or recommendation Necessity or obligation Expectation or probability Would is used to indicate: Past habits or repeated actions Polite requests or invitations Hypothetical situations
Modal Verbs: could
Could can be used with the indefinite infinitive to express past actions. When using could in this way, it usually indicates ability or possibility in the past.