The forms of the future tense in Spanish hold few surprises. The endings are all regular, and there are only a few verbs that have irregular stems in the future. The endings (-é, -ás, -á, -emos, -éis, -án) are added to the infinitive form of -ar, -er, or -ir verbs or, in the case of the few irregular verbs, to the future stem.
Examples:
While most future tense occurrences are regular, there are a few
irregular future and conditional stems, and they should be
committed to memory. Notice how regular most of them are in their
irregularity. They are:
decir –> dir- –> diré, dirás, dirá, etc.
haber –> habr- –> habré, habrás, habrá, etc.
hacer –> har- –> haré, harás, hará, etc.
poder –> podr- –> podré, podrás, podrá, etc.
poner –> pondr- –> pondré, pondrás, pondrá, etc.
querer –> querr- –> querré, querrás, querrá, etc.
saber –> sabr- –> sabré, sabrás, sabrá, etc.
salir –> saldr- –> saldré, saldrás, saldrá, etc.
tener –> tendr- –> tendré, tendrás, tendrá, etc.
venir –> vendr- –> vendré, vendrás, vendrá, etc.
Primary use of the future
tense
Substitutes for the future tense
The future of conjecture or
probability
In the most basic sense, the future tense in Spanish is used
exactly as it is in English. For example:
It is also important to note that Spanish speakers tend to use
the future tense much less than do English speakers. Following are
the primary ways in which the simple future is avoided in
Spanish:
The future and future perfect tenses are frequently used to
express conjecture or probability in the present or
present perfect.