sumar Negative Imperative Conjugation
sumar — to add
The negative imperative of sumar uses the present subjunctive: no sumes, no sume, no sumemos, no sumen, no suméis.
sumar Negative Imperative Forms
When to Use the Negative Imperative
Use the negative imperative of sumar to tell someone *not* to do something, like 'No sumes eso a la cuenta' (Don't add that to the bill) or 'No sumemos los errores' (Let's not add up the mistakes). It's essentially a prohibition.
Notes on sumar in the Negative Imperative
Sumar is regular in the negative imperative, which always uses the present subjunctive forms. Remember the vosotros form ends in -éis.
Example Sentences
No sumes los gastos personales a los del negocio.
Don't add personal expenses to the business ones.
tú
No sumemos todas las posibilidades, solo las realistas.
Let's not add up all the possibilities, only the realistic ones.
nosotros
No sumen el tiempo de espera al total.
Don't add the waiting time to the total.
ustedes
No sume los detalles irrelevantes.
Don't add the irrelevant details.
usted
No suméis más leña al fuego.
Don't add more fuel to the fire.
vosotros
Common Mistakes
Mistake: Forgetting the 'no'.
Correct: Always precede the verb with 'no' for negative commands: 'No sumes' not 'Sumes'.
Why: The 'no' is essential to turn the command into a prohibition.
Mistake: Using the infinitive instead of the subjunctive.
Correct: Use 'No sumar' only in specific constructions, but for direct commands use the subjunctive: 'No sumes'.
Why: Direct negative commands require the subjunctive mood, not the infinitive.
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Related Tenses
Present
yo: sumo
The present of sumar is regular: sumo, sumas, suma, sumamos, sumáis, suman.
Preterite
yo: sumé
The preterite of sumar is regular: sumé, sumaste, sumó, sumamos, sumasteis, sumaron.
Imperfect
yo: sumaba
The imperfect of sumar is regular: sumaba, sumabas, sumaba, sumábamos, sumabais, sumaban.
Future
yo: sumaré
The future of sumar is regular: sumaré, sumarás, sumará, sumaremos, sumaréis, sumarán.
Conditional
yo: sumaría
The conditional of sumar is regular: sumaría, sumarías, sumaría, sumaríamos, sumaríais, sumarían.
Present Subjunctive
yo: sume
The present subjunctive of sumar (sume) is used after expressions of doubt, desire, or emotion.
Imperfect Subjunctive
yo: sumara
The imperfect subjunctive of sumar (sumara/sumase) is used for past hypotheticals or polite requests.
Affirmative Imperative
yo: suma
The imperative of sumar is regular: suma, sume, sumemos, sumen, sumad.