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

ByMichael Burns

Introduction to the verb déventer

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The English translation of the French verb déventer is “to ventilate” or “to air out”. It is pronounced as “day-vawn-tay” in the infinitive form.

The word déventer comes from the Latin word “deventare”, which means “to fan” or “to ventilate”. It entered the French language in the 14th century and has been used in its current form since the 17th century.

In everyday French, déventer in the Conditionnel Passé tense is used to talk about a past action that would have been completed if certain conditions were met. Here are three simple examples of its usage in this tense, with their respective English translations:

  1. Si tu avais ouvert les fenêtres, nous aurions déventé la maison. (If you had opened the windows, we would have ventilated the house.)
  2. J’aurais déventé la pièce si j’avais su que tu étais allergique à la poussière. (I would have aired out the room if I had known you were allergic to dust.)
  3. Ils auraient déventé leur chambre s’ils n’avaient pas oublié de le faire avant de partir en vacances. (They would have aired out their room if they hadn’t forgotten to do it before leaving for vacation.)

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

Pronoun Conjugation Example Usage English Translation
je aurais déventé Si j’avais su, je t’aurais déventé. I would have cleared you out.
tu aurais déventé Tu aurais déventé plus tôt. You would have cleared out earlier.
il aurait déventé Il aurait déventé la pièce. He would have aired out the room.
elle aurait déventé Elle aurait déventé ses vêtements. She would have aired out her clothes.
on aurait déventé On aurait déventé tout ça. One would have cleared out all of that.
nous aurions déventé Nous aurions déventé en français. We would have aired out in French.
vous auriez déventé Vous auriez déventé avec eux. You would have aired out with them.
ils auraient déventé Ils auraient déventé la maison. They would have aired out the house.
elles auraient déventé Elles auraient déventé la voiture. They (female) would have aired out the car.

Other Conjugations for Déventer.

    

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

    Imparfait (Imperfect) Tense Conjugation of the French Verb déventer
     

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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


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Déventer – 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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