C'est la ville où je suis né.Voici le livre dont je parle.That's the city where I was born.Here's the book I'm talking about.
Qui and que cover a clause's subject and direct object. Two more relative pronouns handle two other common jobs: où stands in for a place or time, and dont stands in for anything introduced by de.
Quick shortcut: où replaces a place/time expression (dans/sur/en/à + noun); dont replaces de + noun, whatever role that de-phrase was playing.
Où: place and time
Où replaces the place or time expression that would otherwise repeat the noun already mentioned — dans, sur, à, en + noun, or a time phrase — so the clause itself needs no preposition:
- C'est la ville où je suis né. — replaces dans cette ville.
- Le restaurant où nous avons dîné était excellent. (The restaurant where we had dinner was excellent.) — replaces dans ce restaurant.
- Je me souviens du jour où on s'est rencontrés. (I remember the day when we met.) — replaces ce jour-là, a time expression, not a place.
That last example matters: où covers when as well as where — a French sentence never uses quand to introduce this kind of clause, only où.
Dont: whatever comes after de
Dont replaces de + noun for most jobs that phrase can do (two exceptions are covered further down). Three common cases:
1. Possession ("whose"):
- C'est l'homme dont la fille est médecin. (That's the man whose daughter is a doctor.) — from la fille de cet homme.
- Voici la maison dont le toit est rouge. (Here's the house whose roof is red.) — from le toit de cette maison.
2. A verb that's normally followed by de (parler de, avoir besoin de, avoir peur de, s'occuper de, être content de...):
- Voici le livre dont je parle. — from je parle de ce livre.
- C'est l'outil dont j'ai besoin. (That's the tool I need.) — from j'ai besoin de cet outil.
- C'est le chien dont elle a peur. (That's the dog she's afraid of.) — from elle a peur de ce chien.
3. An adjective that's normally followed by de (fier de, content de, satisfait de...):
- Voici le projet dont je suis fier. (Here's the project I'm proud of.) — from je suis fier de ce projet.
In every case, the test is the same: could you rebuild the idea with a bare de + noun? If yes, dont is the pronoun to reach for — with two exceptions covered below: a place of origin, and de buried inside a longer preposition.
The one rule that matters most
Once dont is used, the de it replaces disappears completely — it never reappears anywhere else in the clause.
- ❌ C'est l'outil dont j'ai besoin de lui. → ✅ C'est l'outil dont j'ai besoin.
- ❌ Voici le livre dont je parle de lui. → ✅ Voici le livre dont je parle.
This is the single most common mistake with dont — a leftover de (often disguised as de lui/de ça/de cela) doubling up with the pronoun that already carries that meaning.
Exception 1: a place of origin uses d'où
Dont covers de + noun in general, but there's a well-known exception: when de marks a place someone or something physically comes from (venir de, sortir de, partir de + place), French uses d'où — de attached to où — instead of dont.
- C'est la ville d'où je viens. (That's the city I come from.) — not ❌ C'est la ville dont je viens.
- Le tiroir d'où sort ce bruit... (The drawer this noise is coming from...)
Dont still works fine for a de-complement that isn't about physical origin, even when the antecedent happens to be a place:
- C'est le pays dont il est originaire. (That's the country he's originally from.) — originaire de is an adjective's de-complement, not venir de + place, so dont is the right choice here.
So the test from the previous section needs one refinement: a de-phrase naming a physical starting point takes d'où, not dont.
Exception 2: dont never after a longer preposition
Dont only replaces a bare, one-word de. It can't stand in when de is the tail end of a longer, compound preposition — à côté de, près de, au sujet de, à cause de, and similar. Those need duquel/de laquelle/desquels/desquelles (or de qui for a person) instead:
- ❌ C'est la personne dont je me suis assis à côté. → ✅ C'est la personne à côté de qui je me suis assis. (That's the person I sat next to.)
- ❌ Voici le sujet dont on a parlé au sujet. → ✅ Voici le sujet au sujet duquel on a parlé. (Here's the subject we talked about.)
This combination is its own, more advanced topic — the point to remember here is just that dont is reserved for a bare de, not one hiding inside a longer preposition.
Common mistakes
- ❌ C'est l'outil dont j'ai besoin de lui. → ✅ C'est l'outil dont j'ai besoin. (never repeat the de that dont already replaces)
- ❌ La ville que je viens... → ✅ La ville d'où je viens. (venir de + a place needs d'où, not que — and not dont either, since the de here marks physical origin)
- ❌ Le jour que je suis né... → ✅ Le jour où je suis né. (a time expression needs où, not que)
Quick check
Show answers
- C'est le quartier ___ j'ai grandi. → où (place, from dans ce quartier)
- Voici le sac ___ j'ai envie. → dont (from j'ai envie de ce sac)
- Je n'oublierai jamais l'été ___ nous avons voyagé ensemble. → où (time)
- C'est l'auteur ___ les romans sont traduits en dix langues. → dont (possession, from les romans de cet auteur)
- Voilà le sujet ___ nous devons discuter. → dont (from discuter de ce sujet)
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Key takeaways
- Où replaces a place or time expression (dans/sur/à/en + noun, or a moment in time) — never quand.
- Dont replaces a bare de + noun, whatever role that phrase played: possession, a verb's de-complement, or an adjective's de-complement.
- Once dont is used, the de it stands for never reappears elsewhere in the clause.
- Two exceptions: a place of physical origin takes d'où, not dont (la ville d'où je viens); and dont can't replace de buried inside a longer preposition like à côté de or au sujet de (use duquel/de qui instead).