acertar Negative Imperative Conjugation
acertar — to get right
Negative commands use 'no' plus the present subjunctive forms: no aciertes, no acierte, no acertemos, no acertéis, no acierten.
acertar Negative Imperative Forms
When to Use the Negative Imperative
Use this to tell someone not to guess or to hope they don't get a specific (bad) result.
Notes on acertar in the Negative Imperative
Like the present subjunctive, it uses the e-to-ie change except for nosotros and vosotros.
Example Sentences
No aciertes a propósito para que gane él.
Don't get it right on purpose so that he wins.
tú
No acertemos por error, queremos ser honestos.
Let's not get it right by mistake; we want to be honest.
nosotros
No acierten todavía, sigan intentando.
Don't get it right yet; keep trying.
Common Mistakes
Mistake: Using the imperative form 'no acierta'.
Correct: no aciertes
Why: Negative commands must always use the subjunctive form, never the affirmative imperative form.
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Related Tenses
Present
yo: acierto
Acertar is a 'boot verb' where the 'e' changes to 'ie' in all forms except nosotros and vosotros.
Preterite
yo: acerté
In the preterite, acertar is completely regular: acerté, acertaste, acertó, acertamos, acertasteis, acertaron.
Imperfect
yo: acertaba
The imperfect of acertar is regular: acertaba, acertabas, acertaba, acertábamos, acertabais, acertaban.
Future
yo: acertaré
The future is regular: just add -é, -ás, -á, -emos, -éis, -án to the full infinitive 'acertar'.
Conditional
yo: acertaría
The conditional is regular: add -ía, -ías, -ía, -íamos, -íais, -ían to the infinitive 'acertar'.
Present Subjunctive
yo: acierte
The present subjunctive follows the 'ie' stem change: acierte, aciertes, acierte, acertemos, acertéis, acierten.
Imperfect Subjunctive
yo: acertara
The imperfect subjunctive is regular based on the preterite stem: acertara, acertaras, acertara, acertáramos, acertarais, acertaran.
Affirmative Imperative
yo: acierta
The affirmative command uses 'acierta' (tú) and 'acierte' (usted), following the stem change.