MODALS

1. Must(obligation,necessity,strong belief)

2. Be able to(ability,possibility)

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

4. Can(ability,request,possibility)

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

6. Would(formal, request,offer)

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

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

9. Should/ought to(advece,opinion)

10. May/might(possibility)

11. May(polite request,permission)

12. Mustn't (prohibition)