The past participle is a form of the verb that usually ends in – ado or – ido. To form a past participle of an – ar verb, remove the – ar and add – ado, – ada, – ados, – adas. To create the past participle form of an – er or – ir verb, remove the infinitive ending and add – ido, – ida, – idos, – idas. Note that these adjectives have four forms and often correspond to the –ed ending of English adjectives.
The past participle of most verbs can function as an adjective. Once you have formed the past participle version of the verb, you have the singular, masculine form of the adjective, which ends in – o. Remember to change the ending to – a for feminine nouns and add – s for plural nouns.
