ISBN-13: 9781264264186, 978-1264264186. Build Mastery in Spanish Verbs for Confident Communication! Topics include: Regular verbs in -ar, -er, and -ir Present, imperfect, preterit, and future tenses Progressive tenses Stem-changing and orthographic-changing verbs Present, imperfect, and perfect tenses of the subjunctive Key irregular verbs and verbs that conjugate like them Irregular past participles and more.