Future Perfect Continuous

Future Perfect Continuous
The Future Perfect Continuous is used to describe an ongoing action that will be completed in the future.
It is formed using the simple future of the verb “to have” (will have) and “been” and the base of the main verb +ing.
In the negative form use “will” + not + have + past participle of the verb “to be” (been) + the base of the main verb +ing
In the interrogative form use “will” + the subject + the present of the verb “to have” (have) + past participle of the verb “to be” (been) + the base of the main verb +ing