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

ByMichael Burns

Introduction to the verb désoxyder

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The English translation of the French verb désoxyder is “to remove oxygen” or “to deoxidize.” It is pronounced as “day-sox-ee-day.”

Désoxyder is derived from the French word “désoxygéner,” which means “to deoxygenate.” This word is a combination of the prefix “dé-” meaning “undo” or “remove,” and the word “oxygéner” which means “to oxygenate.” It is most commonly used in chemistry and metallurgy to refer to the process of removing oxygen from a substance.

In everyday French, désoxyder is often used in the Subjonctif Plus-que-parfait tense. This tense is used to express a past action or event that was completed before another past action or event. It is formed by using the auxiliary verb “avoir” or “être” in the Subjonctif Imparfait form, followed by the past participle of the main verb.

Three examples of désoxyder used in the Subjonctif Plus-que-parfait tense are:

  1. J’avais désoxydé le métal avant de le peindre. (I had deoxidized the metal before painting it.)

  2. Elle était ravie que tu aies désoxydé le vin avant de le boire. (She was delighted that you had deoxidized the wine before drinking it.)

  3. Ils étaient surpris que nous ayons désoxydé le carburant sans aucun problème. (They were surprised that we had deoxidized the fuel without any issues.)

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

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

Other Conjugations for Désoxyder.

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

    Imparfait (Imperfect) Tense Conjugation of the French Verb désoxyder
   

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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Désoxyder – 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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