The future continuous is used to talk about something that will happen in the future and will continue for a certain amount of time.
For example : I will be running in the forest this afternoon. (I will run for a certain period of time)

How to form the future continuous :

• Affirmative form : Subject + will be + verb -ing (eg. I will be running).

• Negative form : Subject + won’t be + verb -ing (eg. I won’t be running).

• Question form : Will + Subject + be + verb – ing (eg. Will I be running ?).