unirse Imperfect Conjugation
unirse — to join
The imperfect of unirse is regular and uses the -ía ending: me unía, te unías, se unía.
unirse Imperfect Forms
When to Use the Imperfect
Use this tense to describe background situations or habitual joining in the past, such as being part of a club for a long time or when you were 'in the process' of joining something.
Notes on unirse in the Imperfect
Unirse is fully regular in the imperfect. As with all -ir verbs, the endings feature an accented 'í' throughout.
Example Sentences
Antes me unía a todas las clases de yoga.
Before, I used to join all the yoga classes.
yo
Nos uníamos a la videollamada cada lunes.
We used to join the video call every Monday.
nosotros
Se unían a la huelga cuando tenían tiempo.
They joined the strike when they had time.
ellos/ellas/ustedes
Common Mistakes
Mistake: Using 'nos unimos' for the past habit.
Correct: nos uníamos
Why: Unimos is present or preterite; for a repeated past action, you must use the -íamos ending.
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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.
Preterite
yo: me uní
The preterite of unirse is regular: me uní, te uniste, se unió, nos unimos, os unisteis, se unieron.
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.