reforzar Preterite Conjugation
reforzar — to reinforce
Reforzar has a spelling change in the 'yo' form (reforcé) to keep the 'th/s' sound.
reforzar Preterite Forms
When to Use the Preterite
Use the preterite for a completed action in the past, like when a wall was reinforced or a law was strengthened on a specific date.
Notes on reforzar in the Preterite
The verb is regular except for the 'yo' form, where the 'z' changes to 'c' before the 'é' (reforcé). This is a standard orthographic rule in Spanish.
Example Sentences
Reforcé la seguridad de mi cuenta ayer.
I reinforced my account security yesterday.
yo
El carpintero reforzó la mesa rota.
The carpenter reinforced the broken table.
él/ella/usted
Reforzamos el muro el verano pasado.
We reinforced the wall last summer.
nosotros
Los soldados reforzaron la frontera.
The soldiers reinforced the border.
ellos/ellas/ustedes
Common Mistakes
Mistake: Spelling the yo form as 'reforzé'.
Correct: reforcé
Why: In Spanish, 'z' usually changes to 'c' before the letters 'e' or 'i'.
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Related Tenses
Present
yo: refuerzo
Reforzar follows an o-ue stem change in all forms except nosotros and vosotros.
Imperfect
yo: reforzaba
Reforzar is completely regular in the imperfect: reforzaba, reforzabas, reforzaba...
Future
yo: reforzaré
Reforzar is regular in the future; just add endings to the full infinitive.
Conditional
yo: reforzaría
The conditional uses the infinitive 'reforzar' plus endings like -ía, -ías, -ía.
Present Subjunctive
yo: refuerce
The present subjunctive features the o-ue stem change and the z-c spelling change.
Imperfect Subjunctive
yo: reforzara
Formed from the 'reforzaron' stem: reforzara, reforzaras, reforzara...
Affirmative Imperative
yo: refuerza
Give commands using 'refuerza' (tú) or 'refuercen' (ustedes).
Negative Imperative
yo: no refuerces
All negative commands for reforzar use the present subjunctive forms.