present-tenseprogressive-aspectverbswill-be-goingword-choice
What is the difference between saying the following?
I am going to bed in a few minutes.
I will be going to bed in a few minutes.
Or
I will be getting off here. Or, I guess, I will be getting off here. See you.
I am getting off here. Or, I guess, I am getting off here. See you.
Which one seems more fluent and natural?
The reason the phrase is never used is because "will have been going to go" invariably includes "am going to go". But in theory, if your travel insurance company asked when you took the decision about your holiday, you could reply "By the time this letter arrives, I will have been going to go (to Acapulco) for fourteen days."
They're both completely valid, and I don't think there's any difference in nuance either. But it's worth noting that including the is less common, and that both versions have long been less common than until morning.
Best Answer
Both are fluent and natural, but they have different meanings.
I am... means that not only have you made the decision to go to bed imminently or get off the bus, but you are actively doing that — finishing off a drink or TV programme, or moving towards the bus doors.
I will be... means that you have made the decision to go to bed or get off the bus soon but you haven't actually done anything about it yet.
The import of each sentence is implicit in the tense used. I am is present tense and you are actually in the process of doing the action; I will be is future tense and although you know you will be doing something, you haven't started yet.