obstruir Present Subjunctive Conjugation
obstruir — to block
Obstruir adds a 'y' before the endings in all forms: obstruya, obstruyas, obstruya, obstruyamos, obstruyáis, obstruyan.
obstruir Present Subjunctive Forms
When to Use the Present Subjunctive
Use this when you want someone to stop blocking something, or when expressing doubt or emotion about an obstruction, such as 'I hope the traffic doesn't block us'.
Notes on obstruir in the Present Subjunctive
This verb follows the 'y' insertion rule for -uir verbs. The 'y' appears before the subjunctive endings to maintain the sound.
Example Sentences
Espero que los camiones no obstruyan la calle.
I hope the trucks don't block the street.
ellos/ellas/ustedes
No quiero que tú obstruyas el pasillo.
I don't want you to block the hallway.
tú
Es posible que la nieve obstruya la entrada.
It's possible that the snow blocks the entrance.
él/ella/usted
Common Mistakes
Mistake: obstrua
Correct: obstruya
Why: Verbs ending in -uir must insert a 'y' before the 'a' in the subjunctive.
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Related Tenses
Present
yo: obstruyo
Obstruir adds a 'y' in most forms: obstruyo, obstruyes, obstruye, obstruyen (but not nosotros/vosotros).
Preterite
yo: obstruí
Obstruir is irregular in the 3rd person (él/ellos), changing 'i' to 'y': obstruyó, obstruyeron.
Imperfect
yo: obstruía
Obstruir is regular in the imperfect: obstruía, obstruías, obstruía, obstruíamos, obstruíais, obstruían.
Future
yo: obstruiré
Obstruir is regular in the future: obstruiré, obstruirás, obstruirá, obstruiremos, obstruiréis, obstruirán.
Conditional
yo: obstruiría
Obstruir is regular in the conditional: obstruiría, obstruirías, obstruiría, obstruiríamos, obstruiríais, obstruirían.
Imperfect Subjunctive
yo: obstruyera
Based on the 3rd person preterite, it uses the 'y' stem: obstruyera, obstruyeras, obstruyera...
Affirmative Imperative
yo: obstruye
Give commands using the 'y' forms: obstruye (tú), obstruya (usted), obstruyan (ustedes).
Negative Imperative
yo: no obstruyas
All negative commands use the present subjunctive: no obstruyas, no obstruya, no obstruyamos...