Future Perfect tense

 

It is used to express an action which will occur in future and is thought to be completed in future. It expresses a sense of completion of an action which will occur in future. For example, “John will have gone tomorrow”. It shows a sense of completion of an action (go) which will occur in future (tomorrow).

Rules. Auxiliary verb “will have” is used in sentence. 3rd form of verb or past participle form of verb is used as main verb in sentence.

 

                                   Structure of sentence

Positive sentence
       • Subject + auxiliary verb + main verb (past participle) + object
       • Subject + will have + 3rd form of verb or past participle + object

Examples
        She will have finished the work by Wednesday.
        I will have left for home by the time he gets up.
        You will have started a job.

Negative sentence
      • Subject + Not between auxiliary verbs + main verb (past participle) + object
      • Subject + will not have + 3rd form of verb or past participle + object

Examples
       She will have finished the work by Wednesday.
       I will have left for home by the time he gets up.
       You will not have started a job.

Interrogative sentence
    • Auxiliary verb + Subject + auxiliary verb + main verb (past participle) + object
    • Will + Subject +have + 3rd form of verb or past participle + object

USE 1 Completed Action Before Something in the Future

The Future Perfect expresses the idea that something will occur before another action in the future. It can also show that something will happen before a specific time in the future.

USE 2 Duration Before Something in the Future (Non-Continuous Verbs)

With Non-Continuous Verbs and some non-continuous uses of Mixed Verbs, we use the Future Perfect to show that something will continue up until another action in the future.


Examples
Will she have finished the work by Wednesday?
Will I have left for home by the time he gets up?
Will you have started a job?

More Examples

Positive sentences
          He will have finished his work.
          You will have made a new chair.
          She will have decorated her home.
          I will have bought a computer.
          They will have shifted to a new home.
          Students will have passed the examination.
Negative sentences
        He will not have finished his work.
        You will not have made a new chair.
        She will not have decorated her home.
        I will not have bought a computer.
        They will not have shifted to a new home.
        Students will not have passed the examination.
Interrogative sentences
       Will he have finished his work?
       Will you have made a new chair?
       Will she have decorated her home?
       Will I have bought a computer?
       Will they have shifted to a new home?
       Will students have passed the examination?