MODALS VERBS. CAN / COULD/ TO BE ABLE TO. (Ability and knowledge)

1. I have the driving licence, now I can drive a car!
2. If you don't study for the driving test you can't drive my car.
3. Can you hear me?

1. I could walk when I was one year old.
2. Esther couldn't finish the primary school because he had to work.

1. I will be able to speak perfect catalan very soon.
2. I will be able to speak catalan perfectly.
3. Ana has been able to dance since she was eight years old.