Las Perífrasis Verbales con participio are the combination of two verbs in which the first verb is the one that is conjugated in any tense and any form or person and the second verb stays in the past participle form. There's no preposition linking both verbs.
Here is a list of a few common períffrasis verbales followed by a past participle and its uses:
Here is a list of a few common períffrasis verbales followed by a past participle and its uses: