6B Present Perfect (presente perfecto) Práctica para el examen

Present tense of "haber" + -ado/-ido or irregular participles
(he, has, ha, hemos, han + participio) = have done something

Special rules:
-er/-ir verbs with stem vowels a, e, or o immediately preceding the infinitive ending require an accent mark over the -í in the participle.

Irregulars:
abrir, cubrir, decir, escribir, hacer, morir, poner, resolver, romper, ver, volver