Category: verbs
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: shall and will
Shall and will are both auxiliary verbs used in English grammar to indicate the future tense. However, they have slightly different meanings and uses.
Modal Verbs: to be
To be can be used as a modal verb in certain situations, although it is not as common as other modal verbs like can, must, or should.
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.
Auxiliary Verbs: to be
To be is used with the present participle (ing form) of the main verb to indicate an action that is currently happening. Example: She is studying for her exam.