How the used must ? Explain

THE EXPLAIN OF HOW TO USED MUST:

MUST is a modal verb – in other words, it helps give meaning to other verbs. Let's look at all its meanings here, so you can avoid misunderstandings!

Meaning 1: We use MUST when we want to say that it is necessary or very important that something happens in the present or future. Example: I must work hard on my English.

Meaning 2: We use MUST to give emphasis to an opinion. Example: I must admit, it was a frightening experience.

Meaning 3: We use MUST to emphasise that we think it is a good idea for someone to do something pleasant. Example: You must come and visit us while you are in London.

Meaning 4: We use MUST to make an assumption or to reach a logical conclusion about something that is very likely to be true. Example: You must be so tired after running that marathon!

That's all 🙂