Use must🖇️

 

The modal verb must is an auxiliary verb that is used together with an infinitive verb to express obligation or prohibition. So when is must used? We use it after any personal pronoun when we want to talk about obligations, duties, advice or strong needs. It can appear affirmatively or negatively.

Example:

📍You must respect older people.

📍Students mustn’t smoke at school.

📍I must call my grandmother more often.

📍Passengers must not stand up during take off and landing.