The future perfect expresses what will have occurred up to a specific point of time in the future.
Subject + will + have + participle form of verb + (object(s))The equipment will have been out for order for two weeks by the time the new batch of orders comes in.
Subject + will + not + have + participle form of verb + (object(s))Mary won't have increased our output by the end of the first quarter.
(Question Word) + will + subject + have + participle form of verb?What will they have produced in that antiquated factory by this time next month?
Todd will have included all the factory overheads in the budget by tomorrow morning.
The repairman will have repaired the faulty circuit by Tuesday.
Our business will have transitioned to producing fast moving consumer goods by 2012.
Apple will have gone overcapacity by 2012.
Examples of What Will Have Happened
Time expressions: 'By' and 'By the ..'
It is important to express the point in time in the future by when something will have happened with the future perfect. Here are the two most common time expressions used with the future perfect form:
By + date or time
… by 2003.
…by the end of next week.
By the time + clause
…by the time we finish this class
…by the time you receive this letter