Modal Verbs por favor me ajuda can - must - would - could - mustn, t might- have to - need- used to- will- needn, t- be used to- May- should- get used to- ought to- would rather- had better 1. to ask for something politely 2. to offer to do something 3. to express a strong advice 4.absence of obligation 5.to express preferences 6. to express obligation 7. to be accustomed to doing something 8. to give advice 9.to express possibility 10.to express future predictions 11.to become accustomed to doing something 12. to express necessity 13. to express habits or routines in the past 14. to express prohibition