He was not able to play football as he had broken his leg in an accident.
He is able to form opinions of his own, take right decisions and implement them confidently.
With our ears, we are able to hear different sounds and messages.
I might be able to help you.
I am able to get my work done to a great extent.
He is able to take care of his behaviour in every situation.
I have been so busy that I have not been able to take you around.
I have not been able to enter it.
I am extremely sorry for not being able to keep my appointment with you yesterday.
To be able to spread happiness you have to be happy first.