21.4.2
Use of future II: an action that will be finished in
the future
In Spanish
as well as in English the use of the future II is to
express something that will be finished at a future
point of time.
Example
Hasta entonces
habrá pagado sus deudas = Until then he will
have paid his debits.
Hasta enero del año que viene habrán
construido la casa = Until January next
year, they will have built the house.