Examples of Use

1. Must

Use: Something is necessary or very important.
Example:

• You must wear a seatbelt in the car.
  (It’s the rule. You have to do it.)

2. Mustn’t

Use: Something is not allowed.
Example:

• You mustn’t smoke here.
  (It’s forbidden. Don’t do it.)

3. Should

Use: A good idea, advice, or recommendation.
Example:

• You should eat more vegetables.
  (It’s healthy. It’s a good idea.)

4. Shouldn’t

Use: A bad idea or something not recommended.
Example:

• You shouldn’t stay up too late.
  (It’s not good for you.)

5. Can

Use: Something is possible or you are able to do it.
Example:

• I can swim.
  (I know how to swim.)

6. Can’t

Use: Not possible or not allowed.
Example:

• You can’t park here.
  (It’s not allowed.)

7. Need to

Use: Something is necessary.
Example:

• I need to buy milk.
  (I don’t have milk. It’s important to get it.)

8. Don’t have to

Use: Not necessary. You can, but you don’t need to.
Example:

• You don’t have to come early.
  (It’s OK if you come later.)

9. Have to

Use: Same as “must” – it’s necessary.
Example:

• We have to do our homework.
  (It’s a rule or a requirement.)

10. Might

Use: Maybe (possibility).
Example:

• It might rain today.
  (Maybe it will rain, maybe not.)

11. May

Use: Maybe or permission (more formal).
Examples:

• It may snow tomorrow. (Maybe)

• You may leave early today. (Permission)

12. Be allowed to

Use: Something is permitted.
Example:

• Are we allowed to take photos here?
  (Is it OK? Is it permitted?)

13. Ought to

Use: Similar to “should” (a good idea or advice).
Example:

• You ought to say thank you.
  (It’s polite. It’s the right thing.)