Past Perfect - StudySpanish.com
https://studyspanish.com/grammar/lessons/pastperfectThe past perfect is formed by combining the auxiliary verb “had” with the past participle. This tense is also known as Pluperfect. I had studied. He had written a letter to María. We had been stranded for six days. Because the past perfect (pluperfect) is a compound tense, two verbs are required: the main verb and the auxiliary verb. I had ...