Future
WILL
uplanned future,decided at the moment
The phone is ringign. I will answear the phone.
promises, treats, offers
He promises he will call as soon as possible.
Main topic
GOING TO
Future plans and intentions
My brother is going to attend the computer course
Predictions
It's cloudy. It's going to rain.
PRESENT CONTINUOUS
planned activities already arranged
My father is having a meeting today.
