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Learn ilustrar conjugation in Pretérito Pluscuamperfecto B step by step with detailed explanations

Image of ilustrar conjugation in Pretérito Pluscuamperfecto B
ilustrar means: to demonstrate, to illustrate, to instruct, to portray

In this lesson we are going to learn how to conjugate the verb ilustrar in the Pretérito Pluscuamperfecto B tense of the Subjuntivo mood. It means we will see step by step how to create the following conjugation:

yohubiese ilustrado
hubieses ilustrado
él/ella/ustedhubiese ilustrado
nosotros/nosotrashubiésemos ilustrado
vosotros/vosotrashubieseis ilustrado
ellos/ellas/ustedeshubiesen ilustrado

The objective of this series is to explain as much as possible the logic behind spelling corrections, exceptions and special cases. That way the amount of stuff which needs to be memorized will be minimal and the learning process will be much more effective. It means learning quicker and with much less effort.

Step by step instructions

Pretérito Pluscuamperfecto B is a compound tense (Spanish: compuesto). It means that all of its inflected forms consist of two words. In Spanish language, there are also simple tenses, where each inflected verb form is one word long.

A compound tense is indicated by the ending of the auxiliary verb, not by the ending of the main verb, which is the case in Spanish simple tenses.

In the compound tenses, every person’s form consist of two parts:
  • A conjugated form of the auxiliary verb haber. In case of the Pretérito Pluscuamperfecto de Subjuntivo B tense, we use the Pretérito Imperfecto de Subjuntivo B (Imperfect Subjunctive B) conjugation of haber
  • Past Participle, which is always the same in every compound tense for a given verb
Image of Compound
Image of ilustr arSee the conjugation charts to learn how to conjugate the auxiliary verb haber. That’s a separate topic, so for brevity we’ll focus on the parts derived from ilustrar only in this lesson.

In order to create the Participio form, we need a stem and an ending. We use the stem of the infinitive of the main verb, and a single ending, which depends on the conjugation group of the main verb. So we need to start by splitting the infinitive into a stem and an ending. It’s really easy to do – just remove two letters from the end of the infinitive form and you have the ending – one of -ar, -er, -ir. What’s left is the stem.

So in case of our verb:
  • the stem is: ilustr-
  • and the ending is: -ar
Based on the ending of the infinitive we can tell that ilustrar belongs to the -ar verb group. This group, in turn, uses the -ado ending in its Participio form. Putting all that together, our Participio is: ilustrado.

Now, as we understand how both parts used by this tense are created separately, let’s move on with creating the final conjugation forms.
Image of -ado
Image of Conjugate haber in Pretérito Imperfecto B ...In order to create the first person singular form, we need to take the first person singular form of haber conjugated in Pretérito Imperfecto de Subjuntivo B, which is hubiese. To that we add the Participio ilustrado to get hubiese ilustrado:
  • yo hubiese ilustrado


Next, to create the form for the second person singular, we again need to take the second person singular form of haber from the Pretérito Imperfecto de Subjuntivo B tense, and that is hubieses. And to this auxiliary verb we add the Participio ilustrado (so the exact same word as previously) to get hubieses ilustrado:
  • tú hubieses ilustrado
Similarly, if we want to create the form for the third person singular, we conjugate haber in the Pretérito Imperfecto B tense and we use the corresponding person’s form (third person singular), namely hubiese. Then we also take the same Participio as for all other persons, and putting them together we get hubiese ilustrado:
  • él hubiese ilustrado
  • ella hubiese ilustrado
  • usted hubiese ilustrado


The first person plural has the form hubiésemos ilustrado. It’s created by following the same logic as in the other persons. We first take the form of the first person plural from haber conjugation in the Pretérito Imperfecto de Subjuntivo B tense: hubiésemos. Second, and to this word we again add the Participio of ilustrar: ilustrado to get hubiésemos ilustrado:
  • nosotros hubiésemos ilustrado
  • nosotras hubiésemos ilustrado
Image of ... create a common Participle ...
Image of ... join them into a compound formAgain, let’s do the same for the second person plural. We need to get the inflected form of the verb haber in the Pretérito Imperfecto de Subjuntivo B tense, second person plural, and it is hubieseis. Next, we take the unchanged Participio, we join them, and we get hubieseis ilustrado:
  • vosotros hubieseis ilustrado
  • vosotras hubieseis ilustrado


And finally, the last grammatical person on the list, the third person plural, has the form hubiesen ilustrado. We create it in the exact same manner as in all the other grammatical persons. We need the third person plural of haber first, from its Pretérito Imperfecto B conjugation. It is hubiesen. We add the Participio of ilustrar again (ilustrado) to get hubiesen ilustrado:
  • ellos hubiesen ilustrado
  • ellas hubiesen ilustrado
  • ustedes hubiesen ilustrado

That’s it! The conjugation is now finished. But don’t end your session yet – it’s important to repeat and practice the material in order to remember it. Check below for some links.

Next Steps

  • To practice this conjugation and test your skills try this Conjugation Exercise or the Memory Game
  • To see other conjugation lessons for this verb choose another tense:  
  • For exercises and examples related to ilustrar visit our Exercise section
  • To see conjugation charts in all tenses for ilustrar visit the Conjugator
  • To explore other learning materials visit the Study section


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