MODALS

1. Must(obligation,necessity,strong belief)

2. Can(ability,request,possibility)

3. Have to/need to (necessity/obligation)

4. May/might(possibility)

5. Can't (strong disbelief,inability,prohibition)

6. Be able to(ability,possibility)

7. Don't have to/don't need to /needn't (lack of necessity)

8. Should/ought to(advece,opinion)

9. May(polite request,permission)

10. Could (past ability , possibility,polite request,polite suggestion)

11. Would(formal, request,offer)

12. Mustn't (prohibition)