The perfect tense is used to talk about something that happened in the past - an action that is completely finished, eg: she watched TV, she has watched TV.

This video provides an explanation of the uses of the preterite tense and how to conjugate it.

After 1975, Spanish cinema witnessed a reinvention under the likes of ... leaving Martín desperately fighting for his life. Creating a tense atmosphere from the beginning, the film adopts a fast pace ...