The document discusses regular -ar verbs in Spanish. It provides the preterit endings for regular -ar verbs (-é, -aste, -ó, -amos, -asteis, -aron) and conjugates common -ar verbs like hablar (to speak), afeitar (to shave), and mostrar (to show) in the preterit tense. Examples are given to practice communicating using regular -ar verbs in the preterit.