Tag: perfect
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.
Modal Verbs: can
Can is a modal verb that can be used to indicate ability, permission, or possibility. Here's how it can be used in different tenses and forms: present, future, indefinite passive, indefinite infinitive
Modal Verbs: ought to
Ought to is a modal auxiliary verb that is used to express obligation or duty. It is often used to suggest a moral or ethical obligation, rather than a legal obligation
Modal Verbs: must
Must with the indefinite infinitive is used in the present to express a strong obligation, necessity or deduction. Examples: I must study for my exam. (strong obligation)
Auxiliary Verbs: to have
Have got is another form of the verb have that can be used as a main verb or an auxiliary verb.