Use of Can
can: Possibility and Ability
We use can to talk about what is possible, what we are able or free to do:
She can drive a car.
John can speak Spanish.
I cannot hear you. (I can't hear you.)
Can you hear me?
Normally, we use can for the present. But it is possible to use can when we make present decisions about future ability.
Can you help me with my homework? (present)
Sorry. I'm busy today. But I can help you tomorrow. (future)
can: Possibility and Ability
We use can to talk about what is possible, what we are able or free to do:
She can drive a car.
John can speak Spanish.
I cannot hear you. (I can't hear you.)
Can you hear me?
Normally, we use can for the present. But it is possible to use can when we make present decisions about future ability.
Can you help me with my homework? (present)
Sorry. I'm busy today. But I can help you tomorrow. (future)