unirse Preterite Conjugation
unirse — to join
The preterite of unirse is regular: me uní, te uniste, se unió, nos unimos, os unisteis, se unieron.
unirse Preterite Forms
When to Use the Preterite
Use the preterite for a completed action of joining at a specific moment, like signing up for a team or entering a group chat.
Notes on unirse in the Preterite
Unirse is regular in the preterite. Note that 'nos unimos' is the same in both present and preterite.
Example Sentences
Me uní al grupo de lectura ayer.
I joined the reading group yesterday.
yo
Se unió a la empresa el mes pasado.
He joined the company last month.
él/ella/usted
Se unieron a nosotros para cenar.
They joined us for dinner.
ellos/ellas/ustedes
Common Mistakes
Mistake: Forgetting the accent in 'se unio'.
Correct: se unió
Why: Without the accent, it is not a valid past tense conjugation.
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Related Tenses
Present
yo: me uno
The present of unirse is a regular -ir reflexive verb: me uno, te unes, se une, nos unimos, os unís, se unen.
Imperfect
yo: me unía
The imperfect of unirse is regular and uses the -ía ending: me unía, te unías, se unía.
Future
yo: me uniré
The future of unirse uses the full infinitive plus endings: me uniré, te unirás, se unirá.
Conditional
yo: me uniría
The conditional of unirse uses the infinitive plus -ía: me uniría, te unirías, se uniría.
Present Subjunctive
yo: me una
The present subjunctive of unirse changes the 'i' to 'a': me una, te unas, se una, nos unamos, os unáis, se unan.
Imperfect Subjunctive
yo: me uniera
The imperfect subjunctive of unirse uses the -ra endings: me uniera, te unieras, se uniera.
Affirmative Imperative
yo: únete
The affirmative imperative attaches pronouns to the end: únete, únase, unámonos, uníos, únanse.
Negative Imperative
yo: no te unas
The negative imperative uses the present subjunctive: no te unas, no se una, no nos unamos.