1.Decisions taken at the moment of speaking I like this dress. I’ll take it. 2. The form of an assumption, hopes, fears, threats, offers, promises, warnings, predictions, requests, comments etc, esp. with: expect, hope, believe, I’m sure, I’m afraid, probably
I hope he’ll like his birthday present. That'll be Jim at the door. 3. Actions or predictions which may (not) happen in the future, or we can not control them and they will definitely happen
The baby will be born after Christmas. She will probably win. He will come to see us at the end of the month.
I’m going to buy some new clothes next week. Planned actions or intentions
Now that she’s rich, she’s going to travel round the world.
Evidence that something will definitely happen in the near future
It looks like the plane is going to take off now. I think I’m going to be sick.
3. Future continuous
1. This describes an event, which will be happening at a future point.
Come round in the morning. I'll be painting the kitchen. 2. It can also describe events, which are going to happen anyway, rather than events, which we choose to make happen.
I won't bother to fix a time to see you, because I'll be calling into the office anyway. 3. Future continuous also sounds more polite than will.
Will you be going to the shops later? If you go, could you get me some potatoes? 4. It can also be used to refer to fixed arrangements and plans.
The band will be performing live in Paris this summer. 5.Actions, which are a result of a routine.
I will be going to the bank tomorrow. I go there every Friday.