Using the Future Perfect Tense of Verbs

The future perfect tense is used to refer to two or more actions that will occur in the future, in which one is completed before the other. The future is perfect is formed by using the verb will followed by the auxiliary verb have and the past participle of the main verb.
Examples: By the time the mail arrives we will have already left for the day.
I am beginning to worry that I will not have finished my homework before my favorite program is on.
At the end of this month I will have lived in this house for ten years.