Verbos con cambio ortográfico i>y (presente subjuntivo)

Stem-changing Spanish i>y verbs in the present subjunctive

In Spanish some verbs ending in -uir undergo a stem change in the present subjunctive, in a very similar way they do in the present indicative. They will switch the -i for -y. The difference is that while in the present indicative the nosotros and vosotros forms do not change, in the present subjunctive all forms are affected by this change.
Have a look at these tables showing both the present indicative and the present subjunctive of construir (to build):

  CONSTRUIR
(present indicative)
CONSTRUIR
(present subjunctive)
 yo construyo construya
  construyes construyas

él / ella / usted

construye construya
nosotros / nosotras construimos construyamos
vosotros / vosotras construís construyáis
ellos / ellas/ ustedes construyen construyan




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