The compound tenses are formed by taking the auxiliary verb “haber” and adding a past participle.
Therefore, the present perfect takes the present tense form of the verb “haber” and adds the past participle.
Here is “haber” in the present tense:
| singular | plural | |
|---|---|---|
| first person | he | hemos |
| second person | has | habéis |
| third person | ha | han |
Here is an example of “comer” conjugated in the present perfect. Note that the past participle of “comer” is comido.
yo he comido
tú has comido
él/ella/usted ha comido
nosotros hemos comido
vosotros habéis comido
ellos/ellas/ustedes han comido