French grammar explained
Ce qui vs ce que in French: what’s the difference?
Both expressions can mean “what” or “that which” in English, so translating them word for word does not help. The real difference is grammatical: one replaces the subject of the next verb, while the other replaces its object.
Je vois ce qui change.
Je vois ce que tu changes.
How do you choose between ce qui and ce que?
Look only at the clause that comes after the expression. Ask what role the missing idea has inside that clause.
I don’t understand what is happening.
What is happening? The unknown situation itself. It is the subject of se passe, so French uses ce qui.
I don’t understand what you mean.
Here, tu is the subject of veux dire. The unknown idea is what you mean: it is the object, so French uses ce que.
What does ce qui mean?
Ce qui introduces an idea that acts as the subject of the following verb. You can often recognize it because a verb comes immediately after qui.
What I like here is the atmosphere.
Tell me what is worrying you.
She explained what had changed.
What does ce que mean?
Ce que introduces an idea that is the direct object of the following verb. A subject such as je, tu, Marie or les étudiants normally appears after it.
This is what I decided.
Can you repeat what you said?
I’m going to show you what we prepared.
Can the word after ce qui be a pronoun?
Yes. The visual shortcut “ce qui + verb” is useful, but object pronouns can appear before that verb:
I know what would make him/her happy.
Lui is not the subject. It means “to him” or “to her.” The unknown thing still performs the action of making someone happy, so ce qui is correct.
What is the difference between qui / que and ce qui / ce que?
Use qui or que when the noun they refer to is already expressed. Use ce qui or ce que when there is no specific noun before them and the meaning is “what,” “that which,” or “the thing that.”
| With an expressed noun | Without an expressed noun |
|---|---|
| Le livre qui est sur la table… The book that is on the table… | Ce qui est sur la table… What is on the table… |
| Le livre que tu lis… The book that you are reading… | Ce que tu lis… What you are reading… |
How do you use tout ce qui and tout ce que?
Add tout when you mean “everything that.” The subject/object distinction stays exactly the same.
All that matters is making progress.
I wrote down everything the teacher explained.
What are the most common mistakes?
Incorrect: Je ne sais pas ce que s’est passé.
Correct: Je ne sais pas ce qui s’est passé.
The event itself happened, so it is the subject.
Incorrect: Je comprends ce qui tu veux.
Correct: Je comprends ce que tu veux.
Tu is the subject of veux; the unknown thing is its object.
Incorrect: C’est ce que est important.
Correct: C’est ce qui est important.
The missing idea is the subject of est.
Mini practice: choose ce qui or ce que
- Je vais t’expliquer ______ me dérange.
- Je ne sais pas ______ elle a choisi.
- ______ est difficile, c’est de commencer.
- Montre-moi ______ tu as écrit.
- Il raconte toujours ______ lui est arrivé.
- Nous avons compris ______ le professeur attendait de nous.
- Tout ______ brille n’est pas de l’or.
- Je n’ai pas entendu ______ vous avez dit.
See the answers
- ce qui — the unknown thing bothers me.
- ce qu’ — elle is the subject of a choisi.
- Ce qui — the unknown thing is difficult.
- ce que — tu is the subject of as écrit.
- ce qui — the event happened to him.
- ce que — le professeur is the subject of attendait.
- ce qui — “everything that shines.”
- ce que — vous is the subject of avez dit.
Final recap
Do not choose by translating “what.” Look at the French clause. If the missing idea is the subject, use ce qui. If the clause already has a subject and the missing idea is the direct object, use ce que or ce qu’. The contrast becomes much easier when you read the sentence as a structure rather than as a list of English equivalents.
Turn clear grammar into real French
Understand the rule, practise it step by step, then use it naturally in real conversations with guidance and correction.
Frequently asked questions
What is the difference between ce qui and ce que?
Ce qui replaces the subject of the following verb. Ce que replaces its direct object.
Why do we say ce qui se passe?
The unknown event is the subject of se passe: it is what is happening. Therefore French uses ce qui.
Does ce que become ce qu’?
Yes. Before a vowel or silent h, write ce qu’, as in ce qu’il dit. Ce qui does not contract.
Can both expressions mean “what”?
Yes. English “what” can correspond to either expression. You must identify whether it is the subject or object in the French clause.
