FUTURE PERFECT SIMPLE

• Construcción: ‘will’ + ‘have’ + participio

By tomorrow, I will have finished my book.
By tomorrow, I won’t have finished my book.
By tomorrow, will you have finished your book? Yes, I will / No, I won’t

• Usos:

- para indicar que una acción habrá acabado en algún punto concreto del futuro:
Before winter, you will have sold your old car.

• Time expressions:

by this time next week, by 10 o’clock, by the end of…, by then, by April, in three months