Future perfect is formed with will + have + past participle.
The past participle of repair is repaired, so the future perfect is -- will have repaired
He will have repaired the car by now.
Will have repaired is the future perfect tense of repair.
will have repaired
The future perfect progressive tense of repaired is will have been repairing.
It is, "will have repaired."
Will have been repairing.
Will have repaired is the future perfect tense of repair.
will have repaired
The future perfect progressive tense of repaired is will have been repairing.
It is, "will have repaired."
Will have been repairing.
The future perfect tense is will have given.
The future perfect tense is will have known.
The future perfect tense is will have started.
The future perfect tense is will have cried.
The future perfect tense is 'will have realized.'
The future perfect tense is will have lost.
The future perfect tense of be is will have been.