concentrar Imperfect Subjunctive Conjugation
concentrar — to focus
The imperfect subjunctive of concentrar (concentrara/concentrase) expresses past hypotheticals, wishes, or doubts.
concentrar Imperfect Subjunctive Forms
When to Use the Imperfect Subjunctive
This tense is used for hypothetical situations in the past, or to express wishes, doubts, or emotions related to past events. For 'concentrar', it could be used in sentences like 'If I had focused more...' or 'I wished you would focus...' (referring to a past possibility).
Notes on concentrar in the Imperfect Subjunctive
Concentrar is regular in the imperfect subjunctive. You can use either the -ra or -se ending (e.g., concentrara or concentrase), though -ra is more common.
Example Sentences
Si me concentrara más, habría entendido la lección.
If I had focused more, I would have understood the lesson.
yo
Ojalá ella se concentrara en su recuperación.
I wish she would focus on her recovery.
Dudaba que ustedes se concentraran tanto.
I doubted that you all would focus so much.
Me habría gustado que te concentrases en el presente.
I would have liked you to focus on the present.
tú
Common Mistakes
Mistake: Using the imperfect indicative instead of the imperfect subjunctive.
Correct: For hypothetical or wishful past statements, use 'concentrara' or 'concentrase', not 'concentraba'.
Why: The subjunctive mood is essential for expressing non-factual or subjective situations.
Mistake: Confusing the -ra and -se forms.
Correct: Both 'concentrara' and 'concentrase' are correct, but 'concentrara' is more common in many regions.
Why: While interchangeable in meaning, regional preferences exist.
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Related Tenses
Present
yo: concentro
The present tense of concentrar (concentro, concentras, concentra, etc.) describes current actions or habits.
Preterite
yo: concentré
The preterite of concentrar is regular: concentré, concentraste, concentró, concentramos, concentrasteis, concentraron.
Imperfect
yo: concentraba
The imperfect of concentrar (concentraba, concentrabas, etc.) describes past habits or ongoing actions.
Future
yo: concentraré
The future tense of concentrar (concentraré, concentrarás, etc.) expresses actions that will happen.
Conditional
yo: concentraría
The conditional of concentrar (concentraría, concentrarías, etc.) expresses hypothetical actions ('would focus').
Present Subjunctive
yo: concentre
The present subjunctive of concentrar (concentre, concentres, concentremos, etc.) is used for wishes, doubts, and emotions.
Affirmative Imperative
yo: concentra
Use the imperative of concentrar for direct commands: ¡concentra, concentre, concentremos, concentrad, concentren!
Negative Imperative
yo: no concentres
Negative commands for concentrar use the present subjunctive: ¡no concentres, no concentre, no concentremos, no concentréis, no concentren!