The Spanish language is renowned for its complexity and nuance, particularly when it comes to the subjunctive mood. The imperfect subjunctive, also known as the subjuntivo imperfecto, is a verb conjugation that expresses doubt, uncertainty, or possibility in the past. Mastering the imperfect subjunctive is essential for any Spanish learner seeking to communicate effectively and accurately convey their thoughts and intentions.
Introduction to the Imperfect Subjunctive

The imperfect subjunctive is used to describe past situations that are uncertain, doubtful, or potential. It is often employed in clauses beginning with words such as “si” (if), “ojalá” (hopefully), or “quizás” (maybe), and is typically used in conjunction with the conditional or the preterite tense in the main clause. The imperfect subjunctive has two main conjugations: the -ra and the -se forms, both of which will be discussed in detail below.
Conjugation of Regular Verbs in the Imperfect Subjunctive
Regular verbs in the imperfect subjunctive follow a predictable pattern. For -ar verbs, the -ra form is created by taking the third person plural preterite form and replacing the -ron ending with -ra, -ras, -ra, -ramos, -ran, and -ras. For example, the verb “hablar” (to speak) becomes “hablara” (I were to speak), “hablaras” (you were to speak), “hablara” (he/she/it were to speak), “habláramos” (we were to speak), “hablaran” (you all were to speak), and “hablaran” (they were to speak). Similarly, for -er and -ir verbs, the -ra form is created by taking the third person plural preterite form and replacing the -ron ending with -ra, -ras, -ra, -ramos, -ran, and -ran. For instance, the verb “comer” (to eat) becomes “comiera” (I were to eat), “comieras” (you were to eat), “comiera” (he/she/it were to eat), “comiéramos” (we were to eat), “comieran” (you all were to eat), and “comieran” (they were to eat).
| Verb Ending | -ra Form | -se Form |
|---|---|---|
| -ar | hablara, hablaras, hablara, habláramos, hablaran, hablaran | hablase, hablases, hablase, hablásemos, hablasen, hablasen |
| -er | comiera, comieras, comiera, comiéramos, comieran, comieran | comiese, comieses, comiese, comiésemos, comiesen, comiesen |
| -ir | viviera, vivieras, viviera, viviéramos, vivieran, vivieran | viviese, vivieses, viviese, viviésemos, viviesen, viviesen |

Conjugation of Irregular Verbs in the Imperfect Subjunctive
Irregular verbs in the imperfect subjunctive do not follow a predictable pattern and must be memorized. Some common irregular verbs in the imperfect subjunctive include “ser” (to be), “estar” (to be), “haber” (to have), and “dar” (to give). For example, the verb “ser” becomes “fuera” (I were to be), “fueras” (you were to be), “fuera” (he/she/it were to be), “fuéramos” (we were to be), “fueran” (you all were to be), and “fueran” (they were to be). It is essential to learn the conjugations of these irregular verbs to use the imperfect subjunctive correctly.
Key Points
- The imperfect subjunctive is used to describe past situations that are uncertain, doubtful, or potential.
- Regular verbs in the imperfect subjunctive follow a predictable pattern, while irregular verbs must be memorized.
- The -ra and -se forms are the two main conjugations of the imperfect subjunctive.
- The imperfect subjunctive is often used in clauses beginning with words such as "si" (if), "ojalá" (hopefully), or "quizás" (maybe).
- The verb conjugation in the imperfect subjunctive depends on the subject pronoun, just like in the indicative mood.
Using the Imperfect Subjunctive in Context

The imperfect subjunctive is used in a variety of contexts, including clauses that express doubt, uncertainty, or possibility in the past. For example, the sentence “Si yo fuera rico, viajaría por el mundo” (If I were rich, I would travel the world) uses the imperfect subjunctive to express a hypothetical situation in the past. Another example is “Ojalá fuera más inteligente” (Hopefully, I were more intelligent), which uses the imperfect subjunctive to express a desire or wish in the past.
Examples of the Imperfect Subjunctive in Use
Here are a few more examples of the imperfect subjunctive in use:
- Si yo estuviera en tu lugar, no lo haría (If I were in your shoes, I wouldn't do it).
- Si fuera más alto, podría alcanzar el estante (If I were taller, I could reach the shelf).
- Ojalá fuera más fuerte, para poder levantar ese peso (Hopefully, I were stronger, so I could lift that weight).
- Si yo fuera el jefe, no permitiría que mis empleados trabajaran tanto (If I were the boss, I wouldn't let my employees work so much).
What is the main difference between the -ra and -se forms of the imperfect subjunctive?
+The main difference between the -ra and -se forms is that the -ra form is more commonly used in modern Spanish, while the -se form is more formal and less common. However, both forms are accepted and can be used interchangeably in most contexts.
How do I know when to use the imperfect subjunctive instead of the indicative mood?
+You should use the imperfect subjunctive when expressing doubt, uncertainty, or possibility in the past, whereas the indicative mood is used to state facts. For example, if you say "Si yo era rico, viajaba por el mundo" (If I was rich, I traveled the world), you are stating a fact, but if you say "Si yo fuera rico, viajaría por el mundo" (If I were rich, I would travel the world), you are expressing a hypothetical situation.
Can I use the imperfect subjunctive in the present tense?
+No, the imperfect subjunctive is only used in the past tense. If you want to express doubt or uncertainty in the present tense, you should use the present subjunctive instead.
In conclusion, the imperfect subjunctive is a complex and nuanced verb conjugation that requires practice and dedication to master. By understanding the rules and exceptions of the imperfect subjunctive, you can improve your Spanish language skills and communicate more effectively in a variety of contexts. Remember to use the imperfect subjunctive when expressing doubt, uncertainty, or possibility in the past, and don’t be afraid to practice and make mistakes – it’s all part of the learning process.