~ができる (potential)

She was different from most of the women in her neighborhood — namely because she could read and write.

The search for the missing child couldn't be carried out because of the storm.

Mother absolutely cannot drive a car.

The students who were good at studying were helping the other students in the class.

Can I change the return date?

Is it possible to change the return date?

Could I ask you another time?

I can do the breaststroke but not the backstroke.

She can drive a car.

She can play tennis, and so can I.

She can skate.

She isn't very good at cooking.