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

ByMichael Burns

Introduction to the verb dépentaniser

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The English translation of the French verb dépentaniser is “to de-pentanize.” The infinitive form is pronounced as “day-pawn-tah-nee-zay.”

Dépentaniser comes from the French word “pentane,” which is a hydrocarbon compound found in crude oil. The suffix “-iser” is added to verbs to indicate the action of making something, in this case, “de-pentane-ize.”

In everyday French, dépentaniser is most often used in the Subjonctif Plus-que-parfait tense, which is a past tense that expresses a hypothetical or uncertain action that happened before another past action. It is often used to express regret, possibility, or doubt.

Example 1:
J’étais désolé(e) que tu n’aies pas dépentanisé le carburant avant de le mettre dans la voiture.
English translation: I was sorry that you had not de-pentanized the fuel before putting it in the car.

Example 2:
Il avait fallu que nous dépentanisions le gaz avant qu’il ne soit utilisé pour la cuisson.
English translation: We had to de-pentanize the gas before it was used for cooking.

Example 3:
Elle avait souhaité que vous dépentanisiez l’essence pour éviter les émissions toxiques.
English translation: She had wished for you to de-pentanize the gasoline to avoid toxic emissions.

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

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

Other Conjugations for Dépentaniser.

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

    Imparfait (Imperfect) Tense Conjugation of the French Verb dépentaniser
   

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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Dépentaniser – 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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