concertar Imperfect Subjunctive Conjugation
concertar — to arrange
The imperfect subjunctive of concertar is regular based on the preterite stem: concertara, concertaras, concertara...
concertar Imperfect Subjunctive Forms
When to Use the Imperfect Subjunctive
Use this for past doubts or hypothetical 'if' situations regarding arrangements.
Notes on concertar in the Imperfect Subjunctive
Even though concertar has stem changes in the present, it is regular in the imperfect subjunctive.
Example Sentences
Si concertaras la cita ahora, no tendrías problemas.
If you arranged the appointment now, you wouldn't have problems.
tú
Dudaba que concertaran el trato tan rápido.
I doubted that they would agree on the deal so quickly.
ellos/ellas/ustedes
Me gustaría que concertáramos una cena.
I would like us to arrange a dinner.
nosotros
Common Mistakes
Mistake: Using 'conciertara'.
Correct: Concertara
Why: The imperfect subjunctive is built from the preterite stem, which does not have a stem change for this verb.
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Related Tenses
Present
yo: concierto
In the present tense, concertar is a stem-changer where the 'e' becomes 'ie' in all forms except nosotros and vosotros.
Preterite
yo: concerté
The preterite of concertar is completely regular, following the standard -ar pattern.
Imperfect
yo: concertaba
The imperfect of concertar is regular: concertaba, concertabas, concertaba, concertábamos, concertabais, concertaban.
Future
yo: concertaré
The future tense is regular: add the endings -é, -ás, -á, -emos, -éis, -án to the full infinitive concertar.
Conditional
yo: concertaría
The conditional of concertar is regular: concertaría, concertarías, concertaría, etc.
Present Subjunctive
yo: concierte
The present subjunctive follows the E-to-IE stem change: concierte, conciertes, concierte, concertemos, concertéis, concierten.
Affirmative Imperative
yo: concierta
The imperative uses the stem change 'ie' for most commands: concierta (tú), concierte (usted).
Negative Imperative
yo: no conciertes
The negative imperative uses the present subjunctive forms: no conciertes, no concierte, no concertemos.