obstruir Affirmative Imperative Conjugation
obstruir — to block
Give commands using the 'y' forms: obstruye (tú), obstruya (usted), obstruyan (ustedes).
obstruir Affirmative Imperative Forms
When to Use the Affirmative Imperative
Use this for direct orders, like a supervisor telling a worker to block a pipe for maintenance.
Notes on obstruir in the Affirmative Imperative
The 'tú' form matches the 3rd person present (obstruye). All other forms use the 'y' from the subjunctive.
Example Sentences
¡Obstruye el flujo de agua ahora!
Block the water flow now!
tú
Obstruya el paso mientras reparamos el suelo, por favor.
Block the way while we repair the floor, please.
usted
Obstruid la entrada con estas cajas.
Block the entrance with these boxes.
vosotros
Common Mistakes
Mistake: obstruie
Correct: obstruye
Why: The 'y' is necessary in the 'tú' command form to follow the conjugation pattern of -uir verbs.
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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.
Present Subjunctive
yo: obstruya
Obstruir adds a 'y' before the endings in all forms: obstruya, obstruyas, obstruya, obstruyamos, obstruyáis, obstruyan.
Imperfect Subjunctive
yo: obstruyera
Based on the 3rd person preterite, it uses the 'y' stem: obstruyera, obstruyeras, obstruyera...
Negative Imperative
yo: no obstruyas
All negative commands use the present subjunctive: no obstruyas, no obstruya, no obstruyamos...