The future perfect continuous is used to talk about an action that will continue at a certain time in the future.

How to form the future continuous :

– Affirmative form : Subject + will have been + verb + -ing
– Negative form : Subject + won’t have been + verb + -ing
– Question from : Will + subject + have been + verb + -ing

Examples :

– In 2030, I will have been working for 10 years.
– In 2030, I won’t have been working for 10 years.
– Will I have been working for 10 years in 2030 ?