reforzar Imperfect Conjugation
reforzar — to reinforce
Reforzar is completely regular in the imperfect: reforzaba, reforzabas, reforzaba...
reforzar Imperfect Forms
When to Use the Imperfect
Use the imperfect to describe ongoing past actions or how things used to be reinforced habitually in the past.
Notes on reforzar in the Imperfect
There are no stem changes or spelling changes in the imperfect for -ar verbs like reforzar.
Example Sentences
Antes, reforzábamos las ventanas cada invierno.
Before, we used to reinforce the windows every winter.
nosotros
Ella reforzaba sus argumentos con datos.
She used to reinforce her arguments with data.
él/ella/usted
Los obreros reforzaban el puente mientras llovía.
The workers were reinforcing the bridge while it was raining.
ellos/ellas/ustedes
Common Mistakes
Mistake: Adding a stem change like 'refuerzaba'.
Correct: reforzaba
Why: Stem changes (o-ue) do not occur in the imperfect tense for -ar verbs.
Master Spanish verbs in context
Memorizing tables only gets you so far. Read 200+ illustrated and narrated Spanish stories to see verbs like 'reforzar' used naturally — in the tenses you're learning.
Related Tenses
Present
yo: refuerzo
Reforzar follows an o-ue stem change in all forms except nosotros and vosotros.
Preterite
yo: reforcé
Reforzar has a spelling change in the 'yo' form (reforcé) to keep the 'th/s' sound.
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.