Future tense is used, unsurprisingly, for talking about the future. However, it is also used to indicate conjecture or probability. When conjugating verbs in the future tense, the last two letters of the verb are not removed, rather the endings are placed at the end of the infinitive form of the verb. Here are a few examples:
Yo sacaré muchas fotos. I will take a lot of pictures.
¿Cuándo irás a la tienda? When will you go to the store.
¿Cuántos años tendrá la chica? I wonder how old the girl is.
La chica tendrá diez años. The girl must be/probably is ten years old.
There are a few irregular stems to be aware of as well. The first group loses the last two letters of the infinitive and adds -r to the end. It still gets the same endings as other future tense verbs.
haber (to have)
poder (to be able to)
querer (to want)
Another set of irregularities will be verbs that keep only the stem and add dr to the stem before putting the new endings on.
salir (to go out)
tener (to have)
valer (to be worth)
venir (to come)
There are also two verb with completely irregular stems. They are:
The future tense is also used to express wonder or probability.
¿Quién será esa chica? I wonder who that girl is.
Será Josefina. It must be (It’s gotta be) Josefina.
¿Cuánto costará ese carro? I wonder how much that car costs.
Costará mucho. It must cost a lot.