fortalecer Imperfect Conjugation
fortalecer — to strengthen
The imperfect of fortalecer is regular: fortalecía, fortalecías, fortalecía, fortalecíamos, fortalecíais, fortalecían.
fortalecer Imperfect Forms
When to Use the Imperfect
Use the imperfect to describe an ongoing process of strengthening in the past or a habit you used to have to keep yourself strong.
Notes on fortalecer in the Imperfect
Fortalecer is fully regular in the imperfect. All forms have a written accent on the 'í'.
Example Sentences
Antes, yo fortalecía mis brazos en el gimnasio.
Before, I used to strengthen my arms at the gym.
yo
La empresa fortalecía su marca cada año.
The company was strengthening its brand every year.
él/ella/usted
Nosotros fortalecíamos los lazos familiares en Navidad.
We used to strengthen family ties at Christmas.
nosotros
Common Mistakes
Mistake: fortaleciamos
Correct: fortalecíamos
Why: All 'nosotros' forms in the imperfect -er/-ir endings require a written accent on the 'í'.
Master Spanish verbs in context
Memorizing tables only gets you so far. Read 200+ illustrated and narrated Spanish stories to see verbs like 'fortalecer' used naturally — in the tenses you're learning.
Related Tenses
Present
yo: fortalezco
Fortalecer is irregular in the 'yo' form (fortalezco), but regular for all other persons in the present tense.
Preterite
yo: fortalecí
Fortalecer is completely regular in the preterite: fortalecí, fortaleciste, fortaleció, fortalecimos, fortalecisteis, fortalecieron.
Future
yo: fortaleceré
The future of fortalecer is regular: just add -é, -ás, -á, -emos, -éis, -án to the infinitive.
Conditional
yo: fortalecería
The conditional of fortalecer is regular: fortalecería, fortalecerías, fortalecería, fortaleceríamos, fortaleceríais, fortalecerían.
Present Subjunctive
yo: fortalezca
The present subjunctive of fortalecer uses the 'fortalezc-' stem for all persons.
Imperfect Subjunctive
yo: fortaleciera
The imperfect subjunctive of fortalecer is regular: fortaleciera, fortalecieras, fortaleciera, fortaleciéramos, fortalecierais, fortalecieran.
Affirmative Imperative
yo: fortalece
The imperative of fortalecer uses 'fortalece' for 'tú' and 'fortalezc-' for formal commands.
Negative Imperative
yo: no fortalezcas
All negative commands for fortalecer use the present subjunctive forms with 'no'.