fallar Present Subjunctive Conjugation
fallar — to fail
Use the present subjunctive of fallar (falle, falles, falle, fallemos, falléis, fallen) for wishes, doubts, and emotions.
fallar Present Subjunctive Forms
When to Use the Present Subjunctive
The present subjunctive is used after expressions of doubt, desire, emotion, or uncertainty, and in negative commands. It's about things that are not factual or certain.
Notes on fallar in the Present Subjunctive
Fallar is regular in the present subjunctive. The forms are identical to the affirmative imperative usted/ustedes/nosotros forms.
Example Sentences
Espero que no falles en tu examen.
I hope you don't fail your exam.
tú
Dudo que él falle en algo tan importante.
I doubt he will fail at something so important.
él/ella/usted
Queremos que todos fallemos juntos en esta celebración.
We want us all to fail together in this celebration (meaning to succeed spectacularly).
nosotros
Es necesario que ustedes no fallen.
It is necessary that you all do not fail.
ellos/ellas/ustedes
Common Mistakes
Mistake: Using the present indicative instead of the present subjunctive.
Correct: Use 'Espero que no falles' (subjunctive), not 'Espero que no fallas' (indicative).
Why: Expressions of hope, doubt, or emotion trigger the subjunctive mood.
Mistake: Forgetting the vosotros subjunctive form.
Correct: The vosotros form is 'falléis'.
Why: The vosotros subjunctive ending for -ar verbs is -éis.
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Related Tenses
Present
yo: fallo
The present tense of fallar (fallo, fallas, falla, fallamos, falláis, fallan) describes current or habitual failures.
Preterite
yo: fallé
The preterite of fallar is regular: fallé, fallaste, falló, fallamos, fallasteis, fallaron, for completed past actions.
Imperfect
yo: fallaba
The imperfect of fallar (fallaba, fallabas, fallaba, fallábamos, fallabais, fallaban) describes ongoing or habitual past failures.
Future
yo: fallaré
The future tense of fallar (fallaré, fallarás, fallará, fallaremos, fallaréis, fallarán) indicates actions that will happen.
Conditional
yo: fallaría
The conditional of fallar (fallaría, fallarías, fallaría, fallaríamos, fallaríais, fallarían) expresses 'would' fail or polite possibilities.
Imperfect Subjunctive
yo: fallara
The imperfect subjunctive (fallara, fallaras, fallara, falláramos, fallarais, fallaran) is for past hypotheticals, wishes, or doubts.
Affirmative Imperative
yo: falla
Use the imperative of fallar for direct commands: falla (tú), falle (usted), fallad (vosotros), fallen (ustedes).
Negative Imperative
yo: no falles
Negative commands use 'no' + present subjunctive: no falles (tú), no falle (usted), no falléis (vosotros), no fallen (ustedes).