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

ByMichael Burns

Introduction to the verb déshydrogéner

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The English translation of the French verb déshydrogéner is “to dehydrogenate.” It is pronounced as “day-see-droh-zhay-nay.”

Déshydrogéner is a compound word derived from the prefix “dé-“, meaning “de-” or “removal,” and the verb “hydrogéner,” meaning “to hydrogenate.” In French, it is used to describe the process of removing hydrogen from a molecule or compound.

In everyday French, déshydrogéner is most often used in the L’infinitif Présent tense, which is the infinitive present tense. This tense is used to describe actions that are happening currently or are recurring.

Examples of its usage in this tense are:

  1. Nous devons déshydrogéner le pétrole pour en faire du carburant. (We have to dehydrogenate the oil to make fuel.)

  2. Les plantes déshydrogènent le dioxyde de carbone pour produire de l’oxygène. (Plants dehydrogenate carbon dioxide to produce oxygen.)

  3. Les bactéries déshydrogènent les matières organiques pour produire du méthane. (Bacteria dehydrogenate organic matter to produce methane.)

  4. We must dehydrogenate the oil to make fuel.

  5. Plants dehydrogenate carbon dioxide to produce oxygen.

  6. Bacteria dehydrogenate organic matter to produce methane.

Table of the L’infinitif Présent (Infinitive Present) Tense Conjugation of déshydrogéner

Pronoun Conjugation Example Usage English Translation
je déshydrogène Je déshydrogène l’eau. I dehydrogenate water.
tu déshydrogènes Tu déshydrogènes l’essence. You dehydrogenate gasoline.
il déshydrogène Il déshydrogène du pétrole. He dehydrogenates oil.
elle déshydrogène Elle déshydrogène l’ammoniaque. She dehydrogenates ammonia.
on déshydrogène On déshydrogène des produits chimiques. We dehydrogenate chemicals.
nous déshydrogenons Nous déshydrogenons le méthane. We dehydrogenate methane.
vous déshydrogenez Vous déshydrogenez du gaz naturel. You dehydrogenate natural gas.
ils déshydrogènent Ils déshydrogènent l’hydrogène. They dehydrogenate hydrogen.
elles déshydrogènent Elles déshydrogènent le carbone. They dehydrogenate carbon.

Other Conjugations for Déshydrogéner.

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

Imparfait (Imperfect) Tense Conjugation of the French Verb déshydrogéner

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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Déshydrogéner – About the French L’infinitif Présent (Infinitive Present) Tense

BEFORE you continue…. why not take a deep dive into all the French tenses with my article on Mastering French Tense Conjugation.
The French “l’infinitif présent” (Infinitive Present) tense is not a true verb tense in the same way that the present, past, or future tenses are. Instead, it’s the base form of a verb, and it has several important uses and interactions with other tenses.

Forming the Infinitive Present

To form the infinitive present of a verb, you typically take the unconjugated form of the verb (the form you’d find in a French dictionary) and remove the ending. For regular verbs, you remove the -er, -ir, or -re ending, and you’re left with the infinitive. For example:
   – Parler (to speak)
   – Finir (to finish)
   – Vendre (to sell)

Common Everyday Usage Patterns

As a Verb’s Dictionary Form

The most common use of the infinitive present is to represent a verb in its base form. It’s the form you would find in a dictionary or verb conjugation table.

After Modal Verbs

When you use modal verbs like “pouvoir” (can), “vouloir” (want), or “devoir” (must), the verb that follows is in its infinitive form. For example:
     – Je veux manger. (I want to eat.)
     – Il peut parler français. (He can speak French.)

As an Imperative

In informal commands, the infinitive is often used. For example:
     – Ferme la porte. (Close the door.)

In Infinitive Clauses

In complex sentences, especially after certain conjunctions, the infinitive is used to express actions that are separate from the main verb. For example:
     – J’ai besoin de manger avant de partir. (I need to eat before leaving.)

Interactions with Other Tenses

Present Tense

The infinitive present can be used with the present tense to express ongoing actions or habitual actions. For example:
     – J’aime manger des croissants. (I like eating croissants.)

Future Tense

When combined with the future tense of “aller,” the infinitive present can express future actions. For example:
     – Je vais manger au restaurant demain. (I am going to eat at the restaurant tomorrow.)

Conditional Tense

The infinitive present is often used with the conditional to express actions that would happen in a hypothetical situation. For example:

     – Il mangerait s’il avait faim. (He would eat if he were hungry.)

Passé Composé

When forming compound tenses like “passé composé,” the auxiliary verb (être or avoir) is conjugated, and the main verb remains in its infinitive form. For example:
     – J’ai mangé une pomme. (I ate an apple.)
     – Elle est partie. (She left.)

Imperfect Tense

The infinitive present can be combined with the imperfect tense to describe ongoing or habitual actions in the past. For example:
     – Quand j’étais enfant, j’aimais jouer. (When I was a child, I liked to play.)

Subjunctive and Conditional Moods

In some complex sentences, the infinitive can be used with the subjunctive and conditional moods, especially when expressing uncertainty, possibility, or doubt.

Summary

The infinitive present in French serves as the base form of a verb and is used in various contexts, including after modal verbs, in imperative commands, in infinitive clauses, and in combination with other tenses to convey a wide range of meanings and actions. Its flexibility makes it a fundamental part of French grammar.

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