Future perfect tense:

Future perfect tense 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 participleform 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

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?