costar Present Subjunctive Conjugation
costar — to cost
The present subjunctive follows the o-to-ue stem change: cueste, cuestes, cueste, costemos, costéis, cuesten.
costar Present Subjunctive Forms
When to Use the Present Subjunctive
Use this when expressing doubt, desire, or impersonal opinions about price or difficulty (e.g., 'I hope it doesn't cost much').
Notes on costar in the Present Subjunctive
The stem change (o to ue) occurs in all forms except nosotros and vosotros, just like the present indicative.
Example Sentences
No creo que cueste tanto dinero.
I don't think it costs that much money.
él/ella/usted
Espero que no te cueste mucho trabajo.
I hope it's not too much work for you.
él/ella/usted
Dudo que las entradas cuesten menos mañana.
I doubt the tickets will cost less tomorrow.
ellos/ellas/ustedes
Common Mistakes
Mistake: Using 'coste' instead of 'cueste'.
Correct: cueste
Why: The stem change must be maintained in the subjunctive for the singular and third-person plural forms.
Mistake: Using 'cuestemos' for nosotros.
Correct: costemos
Why: The nosotros form drops the stem change in the present subjunctive for -ar verbs.
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Related Tenses
Present
yo: cuesto
In the present tense, costar follows an o-to-ue stem change: cuesto, cuestas, cuesta, costamos, costáis, cuestan.
Preterite
yo: costé
The preterite of costar is regular: costé, costaste, costó, costamos, costasteis, costaron.
Imperfect
yo: costaba
The imperfect of costar is regular: costaba, costabas, costaba, costábamos, costabais, costaban.
Future
yo: costaré
The future of costar is regular: costaré, costarás, costará, costaremos, costaréis, costarán.
Conditional
yo: costaría
The conditional of costar is regular: costaría, costarías, costaría, costaríamos, costaríais, costarían.
Imperfect Subjunctive
yo: costara
The imperfect subjunctive of costar is regular: costara, costaras, costara, costáramos, costarais, costaran.
Affirmative Imperative
yo: cuesta
The imperative of costar uses the stem-changed 'cuesta' (tú) and 'cuesten' (ustedes).
Negative Imperative
yo: no cuestes
The negative imperative uses the present subjunctive: no cuestes, no cueste, no costemos, no costéis, no cuesten.