Learn French: Lequel, celui à la moustache ? - Which one, the one with the moustache?

Lequel, celui à la moustache ?

Which one, the one with the moustache?

Breakdown of Lequel, celui à la moustache ?

her, it (feminine direct object pronoun)

celui

the one (masculine singular)

lequel

which (masculine singular, feminine laquelle, plural lesquels, lesquelles)

with (having as a feature)

Questions & Answers about Lequel, celui à la moustache ?

Why do we use à la here instead of avec for "with"?

In French, the preposition à is used to introduce a distinguishing physical feature or characteristic. If you used avec la moustache, it would sound like he is carrying a detached moustache around in his pocket rather than it being a part of his face!

Could we use the preposition de here instead of à?

No. While both prepositions can link nouns, de is used to express what something is made of (its material, like une table de bois). To describe a physical trait, a pattern, or a flavor, you must use à.

Why is it à la moustache instead of à une moustache? English usually says "with a moustache".

When describing physical traits with the preposition à, French typically pairs it with the definite article (le, la, l', les). Because moustache is a feminine noun, it requires la, even though English uses the indefinite article "a".

Could I say lui à la moustache instead of celui à la moustache?

No, you need celui because it is a demonstrative pronoun specifically meaning "the one" or "that one" to point someone out of a group. Lui is a personal pronoun meaning "him" and cannot be modified by a descriptive prepositional phrase in this way.