Question

Where you can used Be in the verb

Answer 1

As a verb 'be able' is not used in a continuous form. However, we can use it as a gerund:
Being able to swim is important for every child. ['Being able to swim' is the subject of the sentence]
I have always dreamed of being able to fly. ['being able to fly' is the object of the preposition 'of'].

Hope it helps...

Answer 2

Hey..

We can use the verb "BE" On that place where something is to happen...

eg.. I want to be a doctor

Here in this example it is to become something or talking about position..

We can say it is short form of become(होना) .....

Hope this will help u.....