Structure
_____ + _____
conjugation
___ | ___ | ___ | ___ | . | ___
haber + past participle of action verb
he | has | ha | hemos | . | han
regular past participle
_____ ( *ar )
_____ ( *er, *ir )
conjugation
___ | ___ | ___ | ___ | . | ___ ( *ar )
___ | ___ | ___ | ___ | . | ___ ( *er, *ir )
*ado
*ido
he *ado | has *ado | ha *ado | hemos *ado | han *ado
he *ido | has *ido | ha *ido | hemos *ido | han *ido
has bailado
han comido
irregular past participle
1 _____ ( with pattern )
2 _____ ( without pattern )
1 in this group, a vowel precedes the *er/*ir verb ending
just add accent on i of ido: ído
caído
oído
2 no pattern - just memorize
. devolver disolver envolver hacer oponer poner proveer resolver romper ver volver
. abrir cubrir decir describir descubrir escribir freír morir pudrir
look out for more irregular ones