obsesionar Preterite Conjugation
obsesionar — to obsess
The preterite of obsesionar is regular: obsesioné, obsesionaste, obsesionó, obsesionamos, obsesionasteis, obsesionaron.
obsesionar Preterite Forms
When to Use the Preterite
Use the preterite to describe a completed action of obsessing that happened at a specific point in the past and has a clear end.
Notes on obsesionar in the Preterite
Obsesionar is a regular -ar verb and is completely regular in the preterite tense.
Example Sentences
Me obsesioné con ese libro durante una semana.
I obsessed over that book for a week.
yo
¿Te obsesionaste con la puntuación?
Did you obsess over the score?
tú
Ella se obsesionó con la limpieza después de la fiesta.
She obsessed over cleaning after the party.
él/ella/usted
Nos obsesionamos con ganar el campeonato.
We obsessed over winning the championship.
nosotros
Common Mistakes
Mistake: Using the imperfect 'obsesionaba' instead of the preterite 'obsesioné' for a single, completed event.
Correct: For an action that started and finished, use the preterite: 'Me obsesioné con la idea ayer.'
Why: The preterite marks a specific, completed action in the past, while the imperfect describes ongoing or habitual past actions.
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Related Tenses
Present
yo: obsesiono
The present tense 'obsesiono' (I obsess) describes current habits or ongoing actions.
Imperfect
yo: obsesionaba
The imperfect 'obsesionaba' (I used to obsess) describes ongoing or habitual past obsessions.
Future
yo: obsesionaré
The future tense 'obsesionaré' (I will obsess) predicts or expresses probability about future obsessions.
Conditional
yo: obsesionaría
The conditional 'obsesionaría' (I would obsess) discusses hypothetical or polite future actions.
Present Subjunctive
yo: obsesione
The present subjunctive 'obsesione' (I/he/she/you obsess) is used after wishes, doubts, and emotions.
Imperfect Subjunctive
yo: obsesionara
The imperfect subjunctive forms like 'obsesionara' (he/she/you would obsess) are used for past hypotheticals or wishes.
Affirmative Imperative
yo: obsesiona
Commands like 'obsesiona' (you singular) and 'obsesionen' (they/you all) are regular.
Negative Imperative
yo: no obsesiones
Negative commands like 'no obsesiones' (you singular) use the present subjunctive.