unir Imperfect Subjunctive Conjugation
unir — to join
The imperfect subjunctive of unir is regular: uniera, unieras, uniera, uniéramos, unierais, unieran.
unir Imperfect Subjunctive Forms
When to Use the Imperfect Subjunctive
Use this for hypothetical situations in the past or in 'if' clauses, like 'If I joined the pieces, it would work'.
Notes on unir in the Imperfect Subjunctive
Unir is regular. It is formed from the third-person plural preterite (unieron) by dropping the -on and adding the subjunctive endings.
Example Sentences
Si yo uniera los puntos, vería el dibujo.
If I joined the dots, I would see the drawing.
yo
Dudaba que ellos unieran las piezas ayer.
I doubted that they joined the pieces yesterday.
ellos/ellas/ustedes
Queríamos que tú unieras al equipo.
We wanted you to join the team.
tú
Common Mistakes
Mistake: uniera
Correct: uniéramos
Why: In the nosotros form, learners often forget the accent on the 'e' before the -ramos ending.
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Related Tenses
Present
yo: uno
The present tense of unir is regular: uno, unes, une, unimos, unís, unen.
Preterite
yo: uní
Unir is regular in the preterite: uní, uniste, unió, unimos, unisteis, unieron.
Imperfect
yo: unía
The imperfect of unir uses standard -ía endings: unía, unías, unía, uníamos, uníais, unían.
Future
yo: uniré
The future of unir is formed by adding endings to the infinitive: uniré, unirás, unirá, uniremos, uniréis, unirán.
Conditional
yo: uniría
The conditional of unir uses the infinitive plus -ía: uniría, unirías, uniría, uniríamos, uniríais, unirían.
Present Subjunctive
yo: una
The present subjunctive of unir follows the regular -ir pattern: una, unas, una, unamos, unáis, unan.
Affirmative Imperative
yo: une
The imperative of unir gives direct commands: une (tú), unid (vosotros), una (usted).
Negative Imperative
yo: no unas
The negative imperative of unir uses the present subjunctive forms: no unas, no una, no unamos, no unáis, no unan.