Complex sentence: Synthetic verbal conjugation is expressed in present, aorist and imperfect tenses while perfect, pluperfect, future and conditional tenses/moods are made by combining auxiliary verbs with participles or synthetic tense forms.
Split into simpler sentences: Synthetic verbal conjugation is expressed in present, aorist and imperfect tenses. Perfect, pluperfect, future and conditional tenses/moods are made by combining auxiliary verbs with participles or synthetic tense forms.