Compound Relative Pronouns (lequel, auquel, duquel)

📌 Note de grammaire

Compound relative pronouns are used after prepositions (like sur, sous, avec, pour, sans) when referring to things rather than people. They must agree in gender and number with the noun they replace: lequel (masculine singular), laquelle (feminine singular), lesquels (masculine plural), and lesquelles (feminine plural).

📌 Note de grammaire

When the antecedent is a singular noun, choose 'lequel' for masculine objects and 'laquelle' for feminine objects. The preposition precedes the pronoun. Remember that compound prepositions like à côté de, en face de, or à cause de also trigger these forms.

📌 Note de grammaire

For plural nouns preceded by a preposition, use 'lesquels' for masculine plural and 'lesquelles' for feminine plural. They combine naturally with simple prepositions (avec, pour, sans, sur, sous, etc.).

📌 Note de grammaire

When the verb or expression requires the preposition 'à' (such as penser à, s'intéresser à, faire attention à), 'à' contracts with 'lequel', 'laquelle', 'lesquels', and 'lesquelles' to form: auquel (m.sg.), à laquelle (f.sg.), auxquels (m.pl.), and auxquelles (f.pl.).

📌 Note de grammaire

When a preposition or verbal expression requires 'de' (such as parler de, avoir besoin de, profiter de), 'de' contracts with 'lequel' forms: duquel (m.sg.), de laquelle (f.sg.), desquels (m.pl.), and desquelles (f.pl.).

📌 Note de grammaire

While 'qui' is standard for people after simple prepositions (l'homme avec qui je parle), compound relative pronouns (lequel, laquelle, etc.) can also be used for clarity, and are often mandatory after complex prepositions ending in 'de' (e.g., à côté de, en face de, à cause de).

📌 Note de grammaire

When referring to an entire clause, an unspecified idea, or an indefinite pronoun (rien, quelque chose), use 'quoi' after a preposition. For specific inanimate nouns, always use 'lequel' and its variants.

📌 Note de grammaire

Verbs taking 'à' like 's'intéresser à', 'penser à', 'participer à', 'songer à', and 'résister à' require 'auquel' (or its feminine/plural equivalents) when linking to a relative clause with an inanimate antecedent.

📌 Note de grammaire

Verbs or expressions governing the preposition 'de' (like 'dépendre de', 'résulter de', 'profiter de', 's'approcher de') require 'duquel' forms when connecting a relative clause to an inanimate noun.

📌 Note de grammaire

While 'dont' is more common for noun complements (le livre dont la couverture est bleue), 'duquel' (or duquel forms) must be used when the relative pronoun is governed by a prepositional phrase containing 'de' (e.g., au milieu duquel, à côté duquel).

📌 Note de grammaire

In formal and professional French (B2/C1 standard), compound relative pronouns ensure precise tracking of antecedents and prevent ambiguity. They elevate the register of emails, reports, and formal essays.

📌 Note de grammaire

Mastering compound relative pronouns requires checking three elements: 1) Is the antecedent a person or thing? 2) What preposition does the following verb or phrase require (à, de, or another preposition)? 3) What is the gender and number of the antecedent for agreement?