introducir Imperfect Conjugation
introducir — to put in
The imperfect of introducir is completely regular: introducía, introducías, introducía.
introducir Imperfect Forms
When to Use the Imperfect
Use this for ongoing past actions or habits, like describing how you used to introduce new software to clients repeatedly.
Notes on introducir in the Imperfect
Introducir is regular in the imperfect. All forms have an accent on the 'í'.
Example Sentences
Yo introducía monedas en la máquina cada mañana.
I used to put coins in the machine every morning.
yo
Antes, nosotros introducíamos los códigos a mano.
Before, we used to enter the codes by hand.
nosotros
El autor introducía personajes muy extraños.
The author used to introduce very strange characters.
él/ella/usted
Common Mistakes
Mistake: introducia
Correct: introducía
Why: All -ir verbs in the imperfect require an accent on the 'i'.
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Related Tenses
Present
yo: introduzco
The present tense of introducir is irregular in the 'yo' form (introduzco), while the rest follow standard -ir patterns.
Preterite
yo: introduje
The preterite of introducir is irregular, replacing the 'c' with a 'j' (introduje, introdujiste, introdujo).
Future
yo: introduciré
The future tense of introducir is regular: just add endings to the infinitive.
Conditional
yo: introduciría
The conditional of introducir is regular: introduciría, introducirías, etc.
Present Subjunctive
yo: introduzca
The present subjunctive uses the 'introduzc-' stem for all persons.
Imperfect Subjunctive
yo: introdujera
This tense uses the 'j' stem from the preterite: introdujera, introdujeras, etc.
Affirmative Imperative
yo: introduce
The imperative uses 'introduce' for 'tú' and 'introduzca' for formal commands.
Negative Imperative
yo: no introduzcas
The negative imperative always uses the 'introduzc-' stem from the subjunctive.