arruinar Negative Imperative Conjugation
arruinar — to ruin
The negative imperative of arruinar always uses the present subjunctive forms preceded by 'no'.
arruinar Negative Imperative Forms
When to Use the Negative Imperative
Use this to tell someone NOT to ruin something, which is the most common way this verb is used as a command.
Notes on arruinar in the Negative Imperative
Arruinar is regular; simply use the present subjunctive forms for all pronouns.
Example Sentences
No arruines la sorpresa, por favor.
Don't ruin the surprise, please.
tú
No arruinen la diversión de los niños.
Don't ruin the children's fun.
ustedes
No arruinéis el pastel antes de la fiesta.
Don't ruin the cake before the party.
vosotros
Common Mistakes
Mistake: no arruina
Correct: no arruines
Why: Negative commands for 'tú' must use the subjunctive form ending in -es, not the indicative form.
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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.
Imperfect Subjunctive
yo: arruinara
The imperfect subjunctive of arruinar is regular: arruinara, arruinaras, arruinara, arruináramos, arruinarais, arruinaran.
Affirmative Imperative
yo: arruina
The imperative of arruinar uses arruina (tú), arruinad (vosotros), and subjunctive forms for others.