The Future Perfect Continuous tense is used to describe an action that will have been happening for a period of time up until a certain point in the future. It emphasizes the duration of an action that will be ongoing in the future before it is completed.
Formula: Subject + will have been + present participle (verb+ing)
Example:
She will have been studying for three hours.
They will have been working for five years.
I will have been waiting for you by 6 PM.
By next year, I will have been working here for five years.
