Common irregularity

Add g in first person of the singular of the present indicative and in the whole the present subjunctive. In the future imperfect indicative and in conditional, e changes to d. ALER equivaler, valer. ALIR salir, sobresalir. Present indicative Present subjunctive Imperative Yo valgo Yo valga   Tú vales Tú valgas Tú vale Él vale… Continue reading Group 13: valer

These verbs change o to ue in all the singular persons and in the third person of the plural of the present indicative, and in the whole present subjunctive. They also change o to u in all the singular persons of the preterit, in the whole imperfect subjunctive and in gerund. O I dormir, morir.… Continue reading Group 12: dormir

Y replaces i in all the singular persons and in the third person of the plural of the present indicative and in the whole the present subjunctive. UIR afluir, atribuir, concluir, confluir, constituir, construir, contribuir, derruir, destituir, destruir, diluir, disminuir, distribuir, excluir, fluir, huir, imbuir, incluir, inmiscuir, influir, instituir, instruir, intuir, obstruir, prostituir, reconstruir, recluir,… Continue reading Group 11: huir

I changes to ie in all the singular persons and in the third person of the plural of the present indicative and the present subjunctive. IRIR adquirir, inquirir. Present indicative Present subjunctive Imperative Yo adquiero Yo adquiera   Tú adquieres Tú adquieras Tú adquiere Él adquiere Él adquiera Usted adquiera Nosotros adquirimos Nosotros adquiramos Nosotros… Continue reading Group 10: adquirir

U changes to ue in all the singular persons and in the third of the plural of the present indicative and the present subjunctive. U A jugar. Present indicative Present subjunctive Imperative Yo juego Yo juegue   Tú juegas Tú juegues Tú juega Él juega Él juegue Usted juegue Nosotros jugamos Nosotros juguemos Nosotros juguemos… Continue reading Group 9: jugar

E changes to ie in all singular persons, in the third person of the plural of the present indicative and in all the present subjunctive. In imperfect subjunctive and gerund e changes to i. E IR adherir, advertir, arrepentirse, asentir, conferir, consentir, convertir, desmentir, diferir, digerir, disentir, divertir, herir, hervir, ingerir, injerir, inserir, invertir, malherir,… Continue reading Group 8: sentir

E changes to iin all the singular persons and the third person of the plural of the present indicative, in the whole the present subjunctive, in the third persons of the preterit, in all persons of the imperfect subjunctive and in gerund. EÑIR ceñir, desteñir, reñir, teñir. Present indicative Present subjunctive Imperative Yo tiño Yo… Continue reading Group 7: teñir, reír

In the singular and the third person of the plural of the present indicative, in all the present subjunctive, the imperfect subjunctive and the gerund e changes to i in the root. E IR comedir, competir, concebir, conseguir, corregir, derretir, despedir, desvestir, elegir, embestir, expedir, gemir, impedir, investir, medir, pedir, perseguir, proseguir, reelegir, regir, rendir,… Continue reading Group 6: vestir

The verbs from this group remove i in the third person of the preterit and in the whole imperfect subjunctive. A ER atañer *. ÑIR gruñir, restriñir. ULLIR bullir, engullir, escabullir, zambullir. Preterit Imperfect subjunctive Yo gruñí Yo gruñera or gruñese Tú gruñiste Tú gruñeras or gruñeses Él gruñó Él gruñera or gruñese Nosotros gruñimos… Continue reading Group 5: gruñir

The verbs of this group add c in the first person of the singular of the present indicative and in the whole the present subjunctive. In preterit and imperfect subjunctive c changes to j. The first and the third persons of the singular of the preterit end in unstressed e and o, respectively. DUCIR aducir,… Continue reading Group 4: reducir