Subjonctif Plus-que-parfait (Subjunctive Pluperfect) Tense Conjugation of the French Verb déminéraliser

ByMichael Burns

Introduction to the verb déminéraliser

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The English translation of the French verb déminéraliser is “to demineralize.” It is pronounced “day-mee-nay-rah-lee-zay” in its infinitive form.

Déminéraliser comes from the French word “minéral,” meaning “mineral,” and the prefix “dé-” which indicates a reversal or removal. It is most commonly used in the context of removing minerals from a substance, such as water or food. In everyday French, it is often used in the Subjonctif Plus-que-parfait tense, which expresses a hypothetical or uncertain action that occurred before another past action. This tense is formed by using the auxiliary verb avoir or être in the Imperfect Subjunctive, followed by the past participle of the main verb.

Here are three simple examples of déminéraliser in the Subjonctif Plus-que-parfait tense, with their respective English translations:

  1. J’avais bu de l’eau déminéralisée avant de me rendre à la réunion. (I had drunk demineralized water before going to the meeting.)
  2. Elle avait ajouté du jus de citron pour déminéraliser son eau du robinet. (She had added lemon juice to demineralize her tap water.)
  3. L’eau déminéralisée aurait été meilleure pour la santé si je l’avais utilisée pour faire mon thé. (Demineralized water would have been better for my health if I had used it to make my tea.)

Table of the Subjonctif Plus-que-parfait (Subjunctive Pluperfect) Tense Conjugation of déminéraliser

Pronoun Conjugation Example Usage English Translation
je eusse déminéralisé Je ne crois pas que j’eusse déminéralisé. I don’t believe I had demineralized.
tu eusses déminéralisé Je ne crois pas que tu eusses déminéralisé. I don’t believe you had demineralized.
il eût déminéralisé Je ne crois pas qu’il eût déminéralisé. I don’t believe he had demineralized.
elle eût déminéralisé Je ne crois pas qu’elle eût déminéralisé. I don’t believe she had demineralized.
on eût déminéralisé Je ne crois pas qu’on eût déminéralisé. I don’t believe one had demineralized.
nous eussions déminéralisé Je ne crois pas que nous eussions déminéralisé. I don’t believe we had demineralized.
vous eussiez déminéralisé Je ne crois pas que vous eussiez déminéralisé. I don’t believe you had demineralized.
ils eussent déminéralisé Je ne crois pas qu’ils eussent déminéralisé. I don’t believe they had demineralized.
elles eussent déminéralisé Je ne crois pas qu’elles eussent déminéralisé. I don’t believe they had demineralized.

Other Conjugations for Déminéraliser.

   
    Le Present (Present Tense) Conjugation of the French Verb déminéraliser
   

    Imparfait (Imperfect) Tense Conjugation of the French Verb déminéraliser
   

    Passé Simple (Simple Past) Tense Conjugation of the French Verb déminéraliser
   

    Passé Composé (Present Perfect) Tense Conjugation of the French Verb déminéraliser
   

    Futur Simple (Simple Future) Tense Conjugation of the French Verb déminéraliser
   

    Futur Proche (Near Future) Tense Conjugation of the French Verb déminéraliser
   

    Plus-que-parfait (Pluperfect) Tense Conjugation of the French Verb déminéraliser
   

    Passé Antérieur (Past Anterior) Tense Conjugation of the French Verb déminéraliser

    Futur Antérieur (Future Anterior) Tense Conjugation of the French Verb déminéraliser

    Subjonctif Présent (Subjunctive Present) Tense Conjugation of the French Verb déminéraliser

    Subjonctif Passé (Subjunctive Past) Tense Conjugation of the French Verb déminéraliser
   

    Subjonctif Imparfait (Subjunctive Imperfect) Tense Conjugation of the French Verb déminéraliser

    Subjonctif Plus-que-parfait (Subjunctive Pluperfect) Tense Conjugation of the French Verb déminéraliser
   

    Conditionnel Présent (Conditional Present) Tense Conjugation of the French Verb déminéraliser
   

    Conditionnel Passé (Conditional Past) Tense Conjugation of the French Verb déminéraliser

    L’impératif Présent (Imperative Present) Tense Conjugation of the French Verb déminéraliser

    L’infinitif Présent (Infinitive Present) Tense Conjugation of the French Verb déminéraliser
    (this article)

    Struggling with French verbs or the language in general? Why not use our free French Grammar Checker – no registration required!
   

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Déminéraliser – About the French Subjonctif Plus-que-parfait (Subjunctive Pluperfect) Tense

The French Subjonctif Plus-que-parfait, also known as the Pluperfect Subjunctive, is a verb tense used to express actions or states that occurred before another action in the past, and it’s used in situations where the indicative mood is in the past subjunctive or conditional mood.
NOTE: To take a deep dive into all the French tenses then see my article on Mastering French Tense Conjugation.

Formation

To form the Subjonctif Plus-que-parfait, you start with the imperfect subjunctive form of the auxiliary verb “avoir” or “être,” followed by the past participle of the main verb. 
For “avoir” verbs: Take the imperfect subjunctive form of “avoir” (e.g., j’eusse, tu eusses, il/elle eût, nous eussions, vous eussiez, ils/elles eussent). Add the past participle of the main verb. 
For “être” verbs: Take the imperfect subjunctive form of “être” (e.g., je fusse, tu fusses, il/elle fût, nous fussions, vous fussiez, ils/elles fussent). Add the past participle of the main verb.

Common Everyday Usage Patterns

Hypothetical Situations

The Subjonctif Plus-que-parfait is often used to express hypothetical or unreal actions that occurred before another past action.
For example: J’aurais aimé que tu aies fini ton travail avant que je sois arrivé. (I would have liked for you to have finished your work before I arrived.) 

Reported Speech

In reported speech, you may use the Subjonctif Plus-que-parfait to convey what someone said or thought in the past. 
For example: Il m’a dit qu’il avait peur que je n’aie pas compris. (He told me that he was afraid that I hadn’t understood.) 

Doubt, Wishes, and Emotions

This tense can also be used to express doubt, wishes, and emotions about past actions. 
For example: Je doutais qu’il eût dit la vérité. (I doubted that he had told the truth.) 
J’aurais souhaité que tu fusses venu. (I would have wished for you to have come.)

Interactions with Other Tenses

Present Subjunctive

The Subjonctif Plus-que-parfait can be used to describe past actions when the main verb is in the present subjunctive. 
For example: “Il faut que j’aie fini mon travail avant que tu partes.” (I must have finished my work before you leave.) 

Imperfect Subjunctive

It’s common to use the Subjonctif Plus-que-parfait with the imperfect subjunctive in complex sentences. 
For example: “Il m’avait dit qu’il fût rentré avant la fin de la journée.” (He had told me that he had returned before the end of the day.) 

Conditional

When the main verb is in the conditional mood, the Subjonctif Plus-que-parfait can be used to express past unreal conditions. 
For example: “Si j’avais su, j’aurais voulu que tu aies réussi.” (If I had known, I would have wanted you to have succeeded.)

Summary

The Subjonctif Plus-que-parfait is a complex tense used to convey nuanced meanings in French. While its usage may seem intricate, it becomes more intuitive with practice and exposure to the language. It’s important to understand the context in which it’s used, as it often conveys subtleties of time, conditionality, and emotion in French sentences.

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