can - Can you play basketball as well as your brother?
could - I couldn't come to your place yesterday.
may - May I ask you a question?
must - You must go to bed in time!
have to - You have to do your homework.
can - Can you play basketball as well as your brother?
could - I couldn't come to your place yesterday.
may - May I ask you a question?
must - You must go to bed in time!
have to - You have to do your homework.