Appendix B
360 trescientos sesenta
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Appendix B
10. Verbs ending in -uir change the unstressed i to y between vowels (except -quir, which
has the silent u) in the following tenses and persons.
huir to escape; to flee
Pres. Part.: huyendo
Pres. Ind.: huyo, huyes, huye, huimos, huís, huyen
Preterit: huí, huiste, huyó, huimos, huisteis, huyeron
Imperative: huye, huya, huyamos, huid, huyan
Pres. Subj.: huya, huyas, huya, huyamos, huyáis, huyan
Imp. Subj.: huyera(-ese), huyeras, huyera, huyéramos, huyerais, huyeran
Verbs that follow the same pattern: atribuir, concluir, constituir, construir,
contribuir, destituir, destruir, disminuir, distribuir, excluir, incluir, influir,
instruir, restituir, sustituir.
11. Verbs ending in -eír lose the e in all but the first- and second-persons plural of the
present indicative, in the third-person singular and plural of the preterit, in all persons
of the present and imperfect subjunctive, and in the present participle.
reír to laugh
Pres. Ind.: río, ríes, ríe, reímos, reís, ríen
Preterit: reí, reíste, rió, reímos, reísteis, rieron
Pres. Subj.: ría, rías, ría, riamos, riáis, rían
Imp. Subj.: riera(-ese), rieras, riera, riéramos, rierais, rieran
Pres. Part.: riendo
Verbs that follow the same pattern: sonreír, freír.
12. Verbs ending in -iar add a written accent to the i, except in the first- and second-
persons plural of the present indicative and subjunctive.
fiar(se) to trust
Pres. Ind.: (me) fío, (te) fías, (se) fía, (nos) fiamos, (os) fiáis, (se) fían
Pres. Subj.: (me) fíe, (te) fíes, (se) fíe, (nos) fiemos, (os) fiéis, (se) fíen
Verbs that follow the same pattern: ampliar, criar, desviar, enfriar, enviar, guiar,
telegrafiar, vaciar, variar.
13. Verbs ending in -uar (except -guar) add a written accent to the u, except in the first-
and second-persons plural of the present indicative and subjunctive.
actuar to act
Pre Ind.: actúo, actúas, actúa, actuamos, actuáis, actúan
Pres. Subj.: actúe, actúes, actúe, actuemos, actuéis, actúen
Verbs that follow the same pattern: acentuar, continuar, efectuar, exceptuar,
graduar, habituar, insinuar, situar.
14. Verbs ending in -ñir lose the i of the diphthongs ie and ió in the third-person singular
and plural of the preterit and all persons of the imperfect subjunctive. They also
change the e of the stem to i in the same persons and in the present indicative and
present subjunctive.
teñir to dye
Pres. Ind.: tiño, tiñes, tiñe, teñimos, teñís, tiñen
Preterit: teñí, teñiste, tiñó, teñimos, teñisteis, tiñeron
Pres. Subj.: tiña, tiñas, tiña, tiñamos, tiñáis, tiñan
Imp. Subj.: tiñera(-ese), tiñeras, tiñera, tiñéramos, tiñerais, tiñeran
Verbs that follow the same pattern: ceñir, constreñir, desteñir, estreñir, reñir.
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