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

ByMichael Burns

Introduction to the verb diagnostiquer

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The English translation of the French verb diagnostiquer is “to diagnose.” It is pronounced “dee-ahg-nos-ti-kay.”

The language origin of diagnostiquer can be traced back to the Greek word “diagnōsis,” meaning “distinguishing” or “discernment.” In French, it is most commonly used as a transitive verb, meaning it requires a direct object.

In everyday French, diagnostiquer is often used in the Subjonctif Plus-que-parfait tense, which is used to express a past event that is hypothetical or uncertain. It is formed by using the auxiliary verb “avoir” or “être” in the imperfect subjunctive form, followed by the past participle of the main verb.

Three simple examples of diagnostiquer in the Subjonctif Plus-que-parfait tense could be:

  1. Il aurait fallu que le médecin ait diagnostiqué la maladie plus tôt. (It would have been necessary for the doctor to have diagnosed the illness earlier.)
  2. Nous aurions aimé que le spécialiste ait diagnostiqué le problème avant qu’il ne devienne plus grave. (We would have liked for the specialist to have diagnosed the problem before it became more serious.)
  3. Il semblait évident qu’elle n’avait pas diagnostiqué le vrai problème. (It seemed evident that she had not diagnosed the real problem.)

English translations:

  1. It would have been necessary for the doctor to have diagnosed the illness earlier.
  2. We would have liked for the specialist to have diagnosed the problem before it became more serious.
  3. It seemed evident that she had not diagnosed the real problem.

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

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

Other Conjugations for Diagnostiquer.

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

    Imparfait (Imperfect) Tense Conjugation of the French Verb diagnostiquer
   

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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Diagnostiquer – 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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