Verbos modales en Inglés

Can, Could, Be Able to / (habilidad)

I can learn - I could understand - I am able to learn

Could (do), Could have (done) /

I could study more - I could have studied more

Must (have), Can't (have)

You must have fallen asleep - You can't have been paying attention

May (have), Might (have)

I have been learning - He has been learning

May and Might (future)

He may be in the office - He might be eating lunch

Can, Could, May, Would (solicitudes, permiso, ofrecer e invitaciones)

Can you wait please? - Could you tell me the time? - Would you do me a favor?

Have to, Must

I have to clean my room - You must come with me

Should, Ought

I had been learning - He had been learning

Subjuntivo

I suggest you take a vacation - He demanded we have dinner with him