The compound tenses are formed by taking the auxiliary verb “haber” and adding a past participle (in the masculine form).
Therefore, the future perfect takes the future tense form of the verb “haber” and adds the past participle.
Here is “haber” in the future tense:
| singular | plural | |
|---|---|---|
| first person | habré | habremos |
| second person | habrás | habréis |
| third person | habrá | habrán |
Here is an example of “comer” conjugated in the future perfect. Note that the past participle of “comer” is comido.
yo habré comido
tú habrás comido
él/ella/usted habrá comido
nosotros habremos comido
vosotros habréis comido
ellos/ellas/ustedes habrán comido