The Lesquels vs. à qui, pour qui, etc.
When the antecedent is a person, and is the object of a preposition following the verb in the relative clause, the relative pronoun generally used is that preposition and qui.
| L'extra-terreste à qui j'ai parlé vient de la
galaxie d'Andromède. |
When the antecedent is not a person, the lequel family of relative pronouns should be used. The right lequel family member agrees in gender and number with the antecedent.
| |
Singular | Plural |
| Masculine |
lequel | lesquels |
| Feminine |
laquelle | lesquelles |
When à or de is the preposition, it fuses with the lequel pronoun (except for the singular feminine form).
| |
Singular | Plural |
| Masculine |
auquel | auxquels |
| Feminine |
à laquelle | auxquelles |
| Les questions auxquelles on répond par oui ou par non sont
rarement intéressantes.-- Julien Green |
| |
Singular | Plural |
| Masculine |
duquel | desquels |
| Feminine |
de laquelle | desquelles |
Sometimes in formal written speech a lequel family member is used when modifying
a person.