Hi everyone today we are going to see the topic Must

Must

"Must" is most commonly used to express certainty. It can also be used to express necessity or strong recommendation, although native speakers prefer the more flexible form "have to." "Must not" can be used to prohibit actions, but this sounds very severe; speakers prefer to use softer modal verbs such as "should not" or "ought not" to dissuade rather than prohibit.

Examples:

• This must be the right address! certainty
• Students must pass an entrance examination to study at this school. necessity
• You must take some medicine for that cough. strong recommendation
• Jenny, you must not play in the street! prohibition

 REMEMBER: "Must not" vs. "Do not have to"
"Must not" suggests that you are prohibited from doing something. "Do not have to" suggests that someone is not required to do something.

Examples:

• You must not eat that. It is forbidden, it is not allowed.
• You don't have to eat that. You can if you want to, but it is not necessary.