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

ByMichael Burns

Introduction to the verb déméthaniser

Get the Subjonctif Imparfait (Subjunctive Imperfect) tense conjugation of déméthaniser. Includes a FREE downloadable reference sheet (no email required). Alternatively if you have a lot of text to check then use our free French Grammar Checker – no registration required!

The English translation of the French verb déméthaniser is “to demethanize.” It is pronounced “day-may-ta-nee-zay.”

The word déméthaniser is derived from the French prefix “dé,” meaning “to remove or undo,” and the word “méthane,” which refers to a colorless, odorless gas often used in industrial processes. Therefore, déméthaniser literally means “to remove methane.”

In everyday French, déméthaniser is most often used in the Subjonctif Imparfait tense to express a hypothetical or uncertain situation in the past. It is often used in conjunction with the word “si,” meaning “if,” to indicate a condition or possibility.

Example 1: Si nous déméthanisions cette usine, nous réduirions notre empreinte carbone. (If we were to demethanize this factory, we would reduce our carbon footprint.)

Example 2: Il fallait que je déméthanise mon véhicule pour qu’il respecte les normes environnementales. (I had to demethanize my vehicle in order for it to comply with environmental regulations.)

Example 3: Je regrettais de ne pas avoir déméthanisé la centrale nucléaire quand j’étais encore le directeur. (I regretted not having demethanized the nuclear power plant when I was still the director.)

Table of the Subjonctif Imparfait (Subjunctive Imperfect) Tense Conjugation of déméthaniser

Pronoun Conjugation Example Usage English Translation
je déméthanisasse Si j’étais un expert en écologie, je déméthanisasse les émissions de gaz. If I were an expert in ecology, I would demethanize gas emissions.
tu déméthanisasses Si tu déméthanisas plus, tu gagnerais une récompense. If you demethanized more, you would earn a reward.
il déméthanisât Si il déméthanisât le barrage, il sauverait les poissons. If he demethanized the dam, he would save the fish.
elle déméthanisât Si elle déméthanisât la ville, elle réduirait la pollution de l’air. If she demethanized the city, she would reduce air pollution.
on déméthanisât Il serait important que on déméthanisât les industries. It would be important that we demethanized industries.
nous déméthanisassions Si nous déméthanisassions les véhicules, nous aurions un impact positif sur l’environnement. If we demethanized vehicles, we would have a positive impact on the environment.
vous déméthanisassiez Si vous déméthanisassiez les bâtiments, vous économiseriez de l’énergie. If you demethanized buildings, you would save energy.
ils déméthanisassent Si ils déméthanisassent les usines, ils réduiraient les émissions de CO2. If they demethanized factories, they would reduce CO2 emissions.
elles déméthanisassent Si elles déméthanisassent les transports, elles amélioreraient la qualité de l’air. If they demethanized transportation, they would improve air quality.

Other Conjugations for Déméthaniser.

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

    Imparfait (Imperfect) Tense Conjugation of the French Verb déméthaniser
   

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

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

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

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

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

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

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

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

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

    Subjonctif Imparfait (Subjunctive Imperfect) Tense Conjugation of the French Verb déméthaniser (this article)

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

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

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

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

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

    Struggling with French verbs or the language in general? Why not use our free French Grammar Checker – no registration required!
   

Get a FREE Download Study Sheet of this Conjugation 🔥

Simply right click the image below, click “save image” and get your free reference for the déméthaniser Subjonctif Imparfait tense conjugation!

Déméthaniser – About the French Subjonctif Imparfait (Subjunctive Imperfect) Tense

The French Subjonctif Imparfait, also known as the imperfect subjunctive, is a verb tense used to express actions, states, or conditions that are uncertain, subjective, or hypothetical in the past. It is used in a variety of situations, including wishes, doubts, emotions, and polite requests, and often occurs in dependent clauses following certain expressions and conjunctions.

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 Imparfait, you typically start with the third person plural (ils/elles) form of the verb in the imparfait (imperfect) tense. Then, you remove the -ent ending and add the appropriate endings:

– For regular -er verbs: je -sse, tu -sses, il/elle/on -t, nous -ssions, vous -ssiez, ils/elles -ssent.
– For regular -ir and -re verbs: je -sse, tu -sses, il/elle/on -t, nous -ssions, vous -ssiez, ils/elles -ssent.

Common Everyday Usage Patterns

1. Expressing Doubt or Uncertainty: The Subjonctif Imparfait is used to express doubt or uncertainty about something that happened in the past.

Example: Il doutait qu’elle vînt à la fête. (He doubted that she came to the party.)

2. Wishes and Desires: It is used to express wishes or desires in the past.

Example: J’aurais aimé que tu fusses là. (I would have liked you to be there.)

3. Hypothetical Scenarios: The Subjonctif Imparfait is employed in hypothetical situations in the past.

Example: Si j’eusse su, j’aurais agi différemment. (If I had known, I would have acted differently.)
4. Polite Requests and Suggestions: It is used to make polite requests and suggestions in a formal or polite tone.

Example: Il souhaitait que vous vinssiez lui rendre visite. (He wished that you would come to visit him.)

Interactions with Other Tenses

Subjonctif Présent

The Subjonctif Imparfait is often used in dependent clauses with the Subjonctif Présent in the main clause, especially in complex sentences.

Example: Il faut que tu manges bien pour que tu aies de l’énergie. (You need to eat well so that you have energy.)

Indicatif Passé Composé

The Subjonctif Imparfait can be used alongside the Indicatif Passé Composé to indicate a contrast between a factual event and a hypothetical one.

Example: Il est parti avant que tu ne fusses arrivé. (He left before you arrived.)

Conditional

The Subjonctif Imparfait is often used with the Conditional to express unreal or hypothetical situations in the past.

Example: J’aurais pu le faire si j’eusse eu plus de temps. (I could have done it if I had had more time.)

Conditional Perfect

It can also be used with the Conditional Perfect to express unreal or hypothetical past events that would have occurred before other past events.

Example: J’aurais su s’il eût partagé l’information. (I would have known if he had shared the information.)

Summary

The Subjonctif Imparfait is a relatively complex tense, and its usage depends on the context and the verbs involved. It is essential to practice and become familiar with common expressions and contexts where this tense is appropriate to use it effectively in everyday French communication.

I hope you enjoyed this article on the verb déméthaniser. Still in a learning mood? Check out another TOTALLY random French verb conjugation!

Similar Posts