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

ByMichael Burns

Introduction to the verb duplexer

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The English translation of the French verb duplexer is “to duplex.” It is pronounced “doo-pleks-ay” in its infinitive form.

The word “duplexer” is derived from the Latin word “duplex” which means “double.” In everyday French, it is most often used in the Conditionnel Passé tense, which is the conditional perfect tense. This tense is used to express actions that would have happened if certain conditions had been met in the past.

Here are three examples of its usage in the Conditionnel Passé tense:

  1. Si j’avais suivi mes rêves, je serais devenue une artiste célèbre. (If I had followed my dreams, I would have become a famous artist.)

  2. Nous aurions acheté cette maison si nous avions eu assez d’argent. (We would have bought this house if we had had enough money.)

  3. Ils auraient gagné le match s’ils avaient travaillé ensemble. (They would have won the game if they had worked together.)

In English, the Conditionnel Passé tense is formed by using “would have” + past participle. It is used to express hypothetical or imagined actions in the past.

Table of the Conditionnel Passé (Conditional Past) Tense Conjugation of duplexer

Pronoun Conjugation Example Usage English Translation
je aurais dupliqué Si j’avais eu le temps, je l’aurais dupliqué. If I had had the time, I would have duplicated it.
tu aurais dupliqué Tu aurais dupliqué la clé USB. You would have duplicated the USB key.
il aurait dupliqué Il aurait dupliqué le document. He would have duplicated the document.
elle aurait dupliqué Elle aurait dupliqué la photo. She would have duplicated the photo.
on aurait dupliqué On aurait dupliqué les fichiers. One would have duplicated the files.
nous aurions dupliqué Nous aurions dupliqué les données. We would have duplicated the data.
vous auriez dupliqué Vous auriez dupliqué le contrat. You would have duplicated the contract.
ils auraient dupliqué Ils auraient dupliqué le rapport. They would have duplicated the report.
elles auraient dupliqué Elles auraient dupliqué la clé USB. They (female) would have duplicated the USB key.

Other Conjugations for Duplexer.

    

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

    Imparfait (Imperfect) Tense Conjugation of the French Verb duplexer
     

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

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

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

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

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

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

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

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

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

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

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

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

    Conditionnel Passé (Conditional Past) Tense Conjugation of the French Verb duplexer  (this article)

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

    L’infinitif Présent (Infinitive Present) Tense Conjugation of the French Verb duplexer


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Duplexer – About the French Conditionnel Passé (Conditional Past) Tense

The French “Conditionnel Passé” is a compound tense used to express hypothetical or unreal actions in the past. It is formed by combining the conditional of the auxiliary verb “avoir” or “être” and the past participle of the main verb.

NOTE: To take a deep dive into all the French tenses then see my article on Mastering French Tense Conjugation.

Formation

Start with the conditional of the auxiliary verb: For most verbs, use “aurais” (for “avoir”) or “serais” (for “être”) as the conditional form. 

With “avoir”: j’aurais, tu aurais, il/elle/on aurait, nous aurions, vous auriez, ils/elles auraient. 
With “être”: je serais, tu serais, il/elle/on serait, nous serions, vous seriez, ils/elles seraient. 

Add the past participle of the main verb to this conditional form. 
For example, if you want to say “I would have done,” you would use “j’aurais fait.” If you want to say “She would have gone,” you would use “elle serait allée.”

Common Everyday Usage Patterns

Expressing Unreal Past Scenarios

The Conditionnel Passé is often used to talk about actions that did not happen in the past, but you are speculating about what would have occurred if they had. It’s a way to discuss hypothetical situations in the past. 

Si j’avais su, je t’aurais aidé. (If I had known, I would have helped you.)
Il serait venu s’il avait eu le temps. (He would have come if he had had the time.) 

Polite Requests or Suggestions

It can be used to make polite requests or suggestions in the past. 

Pourriez-vous m’aider, s’il vous plaît ? (Could you have helped me, please?) 

Expressing Doubt or Uncertainty

It can convey doubt or uncertainty regarding past events.

Il aurait peut-être oublié notre rendez-vous. (He might have forgotten our appointment.)

Interactions with Other Tenses

Conditional Present

You can use the Conditionnel Passé in combination with the conditional present to describe past actions that were hypothetical at the time they were spoken about. J’aurais aimé que tu m’appelles hier. (I would have liked you to call me yesterday.) 

Indicative Past Tenses

You might use the Conditionnel Passé alongside indicative past tenses like the passé composé to contrast hypothetical and real past events. Il est venu hier, mais s’il avait pu, il serait venu la semaine dernière. (He came yesterday, but if he could have, he would have come last week.) 

Conditional Future

In some cases, you can use the Conditionnel Passé in combination with the conditional future to discuss unreal past events that could have consequences in the future. Si j’avais réussi mon examen, j’aurais un meilleur travail. (If I had passed my exam, I would have a better job.)

Summary

In summary, the Conditionnel Passé is used to express hypothetical or unreal actions in the past. It is often used in conjunction with other tenses to convey various nuances in French, allowing speakers to discuss imaginary past scenarios, make polite requests, or express doubt about past events.

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