arruinar Imperfect Subjunctive Conjugation
arruinar — to ruin
The imperfect subjunctive of arruinar is regular: arruinara, arruinaras, arruinara, arruináramos, arruinarais, arruinaran.
arruinar Imperfect Subjunctive Forms
When to Use the Imperfect Subjunctive
Use this in 'if' clauses (e.g., 'If I ruined it...') or when a past-tense emotion or request is involved.
Notes on arruinar in the Imperfect Subjunctive
Arruinar is regular here, derived from the preterite 'ellos' form 'arruinar-'.
Example Sentences
Si yo arruinara la sorpresa, me sentiría fatal.
If I ruined the surprise, I would feel terrible.
yo
Tenía miedo de que arruinaras el momento.
I was afraid that you might ruin the moment.
tú
Nos pidió que no arruináramos el secreto.
He asked us not to ruin the secret.
nosotros
Common Mistakes
Mistake: arruinarais (without the 'i')
Correct: arruinarais
Why: Learners often forget the 'i' in the vosotros form of the subjunctive.
Master Spanish verbs in context
Memorizing tables only gets you so far. Read 200+ illustrated and narrated Spanish stories to see verbs like 'arruinar' used naturally — in the tenses you're learning.
Related Tenses
Present
yo: arruino
Arruinar is regular in the present tense: arruino, arruinas, arruina, arruinamos, arruináis, arruinan.
Preterite
yo: arruiné
The preterite of arruinar is regular: arruiné, arruinaste, arruinó, arruinamos, arruinasteis, arruinaron.
Imperfect
yo: arruinaba
In the imperfect, arruinar uses the regular -aba endings: arruinaba, arruinabas, arruinaba, arruinábamos, arruinabais, arruinaban.
Future
yo: arruinaré
The future of arruinar is formed by adding -é, -ás, -á, -emos, -éis, -án to the infinitive.
Conditional
yo: arruinaría
The conditional of arruinar is regular: add -ía, -ías, -ía, -íamos, -íais, -ían to the infinitive.
Present Subjunctive
yo: arruine
The present subjunctive of arruinar uses -e endings: arruine, arruines, arruine, arruinemos, arruinéis, arruinen.
Affirmative Imperative
yo: arruina
The imperative of arruinar uses arruina (tú), arruinad (vosotros), and subjunctive forms for others.
Negative Imperative
yo: no arruines
The negative imperative of arruinar always uses the present subjunctive forms preceded by 'no'.