In the future I want TO BE ABLE TO / BEING ABLE TO drive
I want to be able to drive
We're having a party next Saturday.. WILL YOU BE ABLE TO/ WERE YOU ABLE TO come?
Will you be able to come? (Future)
When I get a job, I WILL BE ABLE TO / WAS ABLE TO leave home
I will be able to leave
Fortunately, firefighters BE ABLE TO/WERE ABLE TO rescue all of the people trapped inside the burning house.
Fortunately, firefighters were able to rescue
Her mobile has been switched off all morning, so I HAVEN'T BEEN ABLE TO/ WON'T BE ABLE TO talk to her yet.
I haven't been able to....yet(Present Perfect)
I don't like noisy bars. I like BE ABLE TO HAVE /BEING ABLE TO HAVE a conversation without shouting.
I like being able to have
The manager ISN'T ABLE TO /NOT BE ABLE TO see you right now because he's in a meeting
The manager isn't able to see you
You need BEING ABLE TO /TO BE ABLE TO swim before you can go in a canoe.
You need to be able to swim