Future Perfect Continuous Tense

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Future Perfect Continuous Tense is used to indicate an ongoing past action that continued at some point in the past.

Ways to form the Future Perfect Continuous Tense

Affirmative Sentence

The formula for Future Perfect Continuous Tense Affirmative Sentence is as such:

Subject + shall / will + have + been + Verb ('ing' form) + Object (optional) + since / for + the time period

Example:

I shall have been working in bank since January.
He will have been watching a movie for two hours.

Negative Sentence

The formula for Future Perfect Continuous Tense Negative Sentence is as such:

Subject + shall / will + not + have + been + Verb ('ing' form) + Object (optional) + since / for + the time period

Example:

You will not have been studying hard for an exam since November.
She will not have been listening to music for two hours.

Interrogative Sentence

The formula for Future Perfect Continuous Tense Interrogative Sentence is as such:

Shall / will + Subject + have + been + Verb ('ing' form) + Object (optional) + since / for + the time period

Example:

Shall I have been working hard for a job interview since Friday?
Will she have been listening to music for the last 2 hours?

Negative Interrogative Sentence

The formula for Future Perfect Continuous Tense Negative Interrogative Sentence is as such:

Shall / will + Subject + not + have + been + Verb ('ing' form) + Object (optional) + since / for + the time period

Example:

Will John not have been watching a movie for 2 hours?
Shall we not have been working hard for an exam since Monday?

Uses of Future Perfect Continuous Tense

The Future Perfect Continuous Tense is mainly used as:

1. To talk about an action that will be in progress over a period of time and will end in the future

For example

I shall have been studying hard for the exam for the 10 days since Monday.
She will have been trying hard for civil services for 2 years since next year.

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