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

ByMichael Burns

Introduction to the verb dépropaniser

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The English translation of the French verb dépropaniser is “to depropanize.” It is pronounced “day-proh-pah-nee-zay.”

The word dépropaniser is derived from the French prefix “dé-” which means “undo” or “remove,” and the noun “propane,” which refers to a type of gas. It is used to describe the process of removing propane from a substance or mixture.

In everyday French, dépropaniser is most often used in the Subjonctif Plus-que-parfait tense, which is a past tense used to express a hypothetical action or state that was completed before another past action or state. It is typically used in formal or literary language, and is often found in conjunction with the conjunction “si” (if).

Some examples of dépropaniser in the Subjonctif Plus-que-parfait tense are:

  • Si j’avais dépropanisé le mélange, nous n’aurions pas eu d’explosion. (If I had depropanized the mixture, we wouldn’t have had an explosion.)
  • Il aurait fallu que vous dépropanisiez le carburant avant de le mettre dans le réservoir. (You should have depropanized the fuel before putting it in the tank.)
  • Nous aurions aimé que vous dépropanisiez votre produit avant de le vendre sur le marché. (We would have liked you to depropanize your product before selling it on the market.)

In all of these examples, the Subjonctif Plus-que-parfait tense is used to express a hypothetical action that was completed before another past action. In English, this tense is often translated using the past perfect tense, such as “had depropanized” or “had been depropanized.”

Overall, dépropaniser is a technical verb that is most often used in scientific or industrial contexts, and is typically used in formal or literary language.

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

Pronoun Conjugation Example Usage English Translation
je eusse dépropanisé J’aurais aimé que je eusse dépropanisé. I wish I had depropanised.
tu eusses dépropanisé J’aurais aimé que tu eusses dépropanisé. I wish you had depropanised.
il eût dépropanisé J’aurais aimé qu’il eût dépropanisé. I wish he had depropanised.
elle eût dépropanisé J’aurais aimé qu’elle eût dépropanisé. I wish she had depropanised.
on eût dépropanisé J’aurais aimé qu’on eût dépropanisé. I wish one had depropanised.
nous eussions dépropanisé J’aurais aimé que nous eussions dépropanisé. I wish we had depropanised.
vous eussiez dépropanisé J’aurais aimé que vous eussiez dépropanisé. I wish you had depropanised.
ils eussent dépropanisé J’aurais aimé qu’ils eussent dépropanisé. I wish they had depropanised.
elles eussent dépropanisé J’aurais aimé qu’elles eussent dépropanisé. I wish they had depropanised.

Other Conjugations for Dépropaniser.

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

    Imparfait (Imperfect) Tense Conjugation of the French Verb dépropaniser
   

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    L’infinitif Présent (Infinitive Present) Tense Conjugation of the French Verb dépropaniser
    (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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Dépropaniser – 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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