Affirmative: I am...
I am able to swim really well.
Negative: I am not... (speak chinese)
I am not able to speak Chinese.
Affirmative: He is....
He is able to drive.
Negative: When I was 5, I was not...
When I was 5, I was not able to ride a bike.
Affirmative: I...
I am able to run very fast.
Affirmative: I...
I am able to speak English.
Affirmative: She is....
She is able to sing.
Question: Are you... (ride a horse)
Are you able to ride a horse?
Affirmative: When she was 15, she was able to...
When she was 15, she was able to travel to Paris.
Negative: When I was 2, I was not...
When I was 2, I was not able to play with the computer!
Question: will you be able to...
Will you be able to buy a house?