Assessing evidence and explanations in French

Level B2

Assessing evidence and explanations in French

This lesson shows you how to ask what supports a claim, identify assumptions, and weigh competing explanations. You’ll learn to distinguish an association from an established causal link and to express uncertainty carefully. French marks familiarity in direct address: choose tu informally and vous in formal or more distant situations.

Words for evidence and explanations

Ask what supports a claim

Use étayer to say that evidence supports an explanation, and make the evidence’s limits clear. In a formal exchange, ask “Quelles preuves avez-vous...?”; informally, say “Sur quoi tu te bases...?” English “you” does not distinguish these relationships, but French requires you to choose between vous and tu in direct address.

éléments de preuve étayent une explication, mais limite des données.

Point out an assumption

Use partir du présupposé que to identify an unstated idea behind a claim. For example: “Vous partez du présupposé que le bâtiment a été autant utilisé pendant les deux mois.” In informal conversation, change vous to tu: “Tu pars d’un présupposé...”; the verb changes with the pronoun.

Separate association from cause

An association shows that two things are related; it does not establish that one caused the other. Say “Il y a une association, mais nous n’avons pas encore établi de lien de causalité...” when that link remains unproven. These examples contain no tu/vous distinction. The formal versions use nous and more measured phrasing; the informal versions use more conversational wording, including on for “we.” “Ces chiffres montrent...” can occur in either register.

Qualify a possible cause

Use pourrait être l’une des causes to describe a possible contributor without presenting it as certain. Then state what is still unknown: “...nous ne pouvons pas encore dire dans quelle mesure elles y ont contribué.” Informally, “on ne sait pas à quel point elles ont aidé” is more conversational; on is singular in French grammar even when it means “we.”

facteur pourrait être l'une des causes de résultat, mais limite des connaissances sur sa contribution.

Compare plausible explanations

To raise an alternative formally, ask “Des températures plus élevées pourraient-elles être une explication plus plausible ?” In conversation, “Des températures plus élevées, c’est peut-être une explication plus plausible” offers the idea tentatively. English can use “could” and “maybe” too; in French, the inversion pourraient-elles makes the question formal, while c’est peut-être sounds more conversational.

facteur proposé pourrait être une explication plus plausible.

Review the evidence formally

This exchange uses vous, nous and carefully phrased questions for a professional or more distant conversation. The speakers identify the short observation period and an assumption before considering whether the evidence establishes causation. Use this register with people you address as vous.

Review the evidence informally

This exchange uses tu and on in a familiar conversation. The tu forms are pars and te bases; on n’a and on ne sait use singular verb forms. English has no matching pronoun choice, so use this register with people you normally address as tu.

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