Introduction to the verb catalyser
Get the Passé Composé (Present Perfect) tense conjugation of catalyser. 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 catalyser is “to catalyze.” It is pronounced as “ka-ta-lee-zay” in its infinitive form.
The word “catalyser” comes from the Greek word “katalusis,” meaning “dissolution,” and the suffix “-er,” used to form verbs in French. It was first used in the scientific field, specifically in chemistry, to describe the process of increasing the rate of a chemical reaction through the use of a catalyst.
In everyday French, the verb “catalyser” is most often used in the Passé Composé (Present Perfect) tense to describe an action that has been completed in the past. It is conjugated as “avoir catalysé” for most subjects, except for “je” and “tu” which use “ai” and “as” respectively instead of “avoir.”
- Le catalyseur a favorisé la réaction chimique. (The catalyst sped up the chemical reaction.)
- Ils ont catalysé leur collaboration pour terminer le projet plus rapidement. (They catalyzed their collaboration to finish the project faster.)
- Elle a catalysé un changement de mentalité dans l’entreprise. (She catalyzed a change in mindset in the company.)
Table of the Passé Composé (Present Perfect) Tense Conjugation of catalyser
|J’ai catalysé la réaction.
|I catalyzed the reaction.
|Tu as catalysé le processus.
|You catalyzed the process.
|Il a catalysé la transformation.
|He catalyzed the transformation.
|Elle a catalysé la croissance.
|She catalyzed growth.
|On a catalysé la production.
|We catalyzed production.
|Nous avons catalysé le développement.
|We catalyzed development.
|Vous avez catalysé l’innovation.
|You catalyzed innovation.
|Ils ont catalysé le changement.
|They catalyzed change.
|Elles ont catalysé la transition.
|They catalyzed transition.
Other Conjugations for Catalyser.
Le Present (Present Tense) Conjugation of the French Verb catalyser
Imparfait (Imperfect) Tense Conjugation of the French Verb catalyser
Passé Simple (Simple Past) Tense Conjugation of the French Verb catalyser
Passé Composé (Present Perfect) Tense Conjugation of the French Verb catalyser (this article)
Futur Simple (Simple Future) Tense Conjugation of the French Verb catalyser
Futur Proche (Near Future) Tense Conjugation of the French Verb catalyser
Plus-que-parfait (Pluperfect) Tense Conjugation of the French Verb catalyser
Passé Antérieur (Past Anterior) Tense Conjugation of the French Verb catalyser
Futur Antérieur (Future Anterior) Tense Conjugation of the French Verb catalyser
Subjonctif Présent (Subjunctive Present) Tense Conjugation of the French Verb catalyser
Subjonctif Passé (Subjunctive Past) Tense Conjugation of the French Verb catalyser
Subjonctif Imparfait (Subjunctive Imperfect) Tense Conjugation of the French Verb catalyser
Subjonctif Plus-que-parfait (Subjunctive Pluperfect) Tense Conjugation of the French Verb catalyser
Conditionnel Présent (Conditional Present) Tense Conjugation of the French Verb catalyser
Conditionnel Passé (Conditional Past) Tense Conjugation of the French Verb catalyser
L’impératif Présent (Imperative Present) Tense Conjugation of the French Verb catalyser
L’infinitif Présent (Infinitive Present) Tense Conjugation of the French Verb catalyser
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 catalyser present perfect tense conjugation!
Catalyser – About the French Passé Composé (Present Perfect) Tense
The French Passé Composé is a compound tense used to express actions or events that have been completed in the past. It is one of the most common past tenses in the French language and is typically used in everyday conversation to describe actions that occurred at a specific point in the past. The Passé Composé is constructed using an auxiliary verb (either “être” or “avoir”) and a past participle.
Formation of the Passé Composé
Set the auxiliary verb with either
“être” – used with a select group of verbs (mostly intransitive verbs of motion, reflexive verbs, and some others) or
“avoir” – used with most other verbs.
Conjugate the auxiliary verb
If using “être,” you must conjugate it in the present tense according to the subject of the sentence.
Je suis, Tu es, Il est, Nous sommes, Vous êtes, Ils sont
If using “avoir,” conjugate it according to the subject as well:
J’ai, Tu as, Elle a, Nous avons, Vous avez, Ils ont.
Add the past participle
For regular -er verbs, remove the -er ending and add -é (e.g., “parler” becomes “parlé”).
For regular -ir verbs, remove the -ir ending and add -i (e.g., “finir” becomes “fini”).
For regular -re verbs, remove the -re ending and add -u (e.g., “vendre” becomes “vendu”).
For irregular verbs, you’ll need to learn the past participles individually, as they don’t follow a regular pattern.
Common everyday usage patterns
Narrating Past Events
The Passé Composé is used to talk about specific actions or events that took place in the past. For example: “Hier, j’ai mangé une pizza” (Yesterday, I ate a pizza).
When describing a series of actions in the past, the Passé Composé is used. For example: “D’abord, je me suis réveillé, puis je suis allé travailler” (First, I woke up, then I went to work).
Describing Completed Actions
It’s used to emphasize that an action has been completed, often with a specific time reference. For example: “Elle a terminé son travail à 18 heures” (She finished her work at 6 p.m.).
Interactions with other tenses
The Passé Composé is often used in conjunction with the imperfect tense when telling a story or describing past events. The Passé Composé is used for specific actions that occurred, while the imperfect is used for background information or ongoing actions.
For example: “Il pleuvait quand j’ai sorti mon parapluie” (It was raining when I took out my umbrella).
Conditional and Future Tenses
The Passé Composé is used as a reference point in complex sentences to establish the sequence of events in relation to future or conditional actions.
For example: “Quand il est arrivé, je lui ai donné ton message” (When he arrived, I gave him your message).
The French Passé Composé is an essential tense for talking about completed actions in the past in everyday conversation. It’s important to master the choice of auxiliary verb and the past participle conjugation for various verbs to use it effectively.
I hope you enjoyed this article on the verb catalyser. Still in a learning mood? Check out another TOTALLY random French verb conjugation!