Future simple with will
prediction
the weather will be fine tomorrow
promise
Subtopic
If you get the full mark , your father will buy you a mobile phone.
Threat
If you make the same mistake again, I will fire you.
Requests
will you open the window for me?
Future facts
Today is wednesday, tomorrow will be Thursday
on spot decision
The phone is ringing, Iwill answer it.
Offers
Don't worry, I will help you