There are many different ways we can talk about the future Let’s look at

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now

Function: future perfect simple/cont.

now

future perfect simple		future perfect continuous
An assumption about the present.	Lara will have arrived home by now.	An activity that will have been in progress up to a certain point in the future.	You will have been working there for a week and a half (by the time I’m back).
An activity that will be completed before a certain point in the future.	By the time you’re back from holiday, I will have started my new job.

I will have started my new job
By the time you’re/
I’m back from holiday
You will have been working there for...
week and a half
Future perfect simple:
Will + have + past participle
Future perfect cont.:
Will + have + been + verb-ing
This is the specific point in time in the future.
This will start in the future and continue in progress up to the specific time in the future
This event happens before that specific time in the future.
Going to...

Uses	Examples
	The tide is going to rise soon.
	The mayor is going to make a speech at the conference.
	It’s going to rain soon.

Predictions based on observation
Actions which are inevitable or unstoppable
Function: going to
Match the uses to the examples.
Intentions or plans which are made before the time of speaking