
introducir Present Subjunctive Conjugation
introducir — to put in
The present subjunctive uses the 'introduzc-' stem for all persons.
introducir Present Subjunctive Forms
When to Use the Present Subjunctive
Use this after expressions of doubt, desire, or impersonal phrases, like 'I want you to introduce me' or 'It's important that you insert the disk'.
Notes on introducir in the Present Subjunctive
Because the 'yo' form of the present is 'introduzco', the subjunctive carries that 'zc' throughout.
Example Sentences
Espero que introduzcan mejoras pronto.
I hope they introduce improvements soon.
ellos/ellas/ustedes
Es necesario que introduzcas la contraseña.
It is necessary that you enter the password.
tú
No creo que él introduzca el tema hoy.
I don't think he will introduce the topic today.
él/ella/usted
Common Mistakes
Mistake: que yo introduca
Correct: que yo introduzca
Why: The subjunctive is built from the 'yo' form of the present indicative, which is 'introduzco'.
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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).
Imperfect
yo: introducía
The imperfect of introducir is completely regular: introducía, introducías, introducía.
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.
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.