[going to] Can be expected to; planning to. – Used after “is” , with an infinitive, in the same way “will” is used, toshow future.
Some day that big tree is going to rot and fall.
Look at those dark clouds. It’s going to rain.
The boys are goingto practice football this afternoon.
For a minute Ben thought thecar was going to hit him.
I was going to attend the meeting, butafter supper I forgot about it.
– Sometimes used without theinfinitive.
That worn rope hasn’t broken yet, but it’s going to.
“Put some more wood on the fire.” – “I’m going to.”