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A1 · Sentence Structure · Published
C’est vs Il est
Use c’est when a determiner and a noun follow the verb:
C’est un médecin. C’est ma sœur.
Use il est or elle est before an adjective on its own or a profession without an article:
Il est grand. Elle est médecin.
That single test — look at the word right after the verb — decides nearly every sentence.
English makes this hard because "he is", "she is", "it is", and "this is" can all become either phrase. French does not choose by meaning here; it chooses by structure. Both phrases are built on the verb être, whose forms are covered on the être and avoir page.
In short
- C’est + determiner + noun: c’est un café, c’est ma mère.
- Il est / elle est + adjective alone, or + profession without an article: il est content, elle est médecin.
- Plural: ce sont + noun, ils sont / elles sont + adjective.
c’est / ce sontil est / elle est / ils sontdeterminer· hover a highlighted word for its label
The determiner test
A determiner is one of the small words that introduce a noun:
un, une, le, la, mon, ta, ce, cette…
If a determiner comes right after the verb, the sentence needs c’est.
If the verb runs straight into an adjective, the sentence needs il est or elle est.
This one test does 90% of the work.
| Right after the verb | Use |
|---|---|
| un, une, le, la, mon, ce… + noun | c’est |
| an adjective on its own | il est / elle est |
| a profession without an article | il est / elle est |
It’s the bus to the station.
— Le is a determiner, so the sentence starts with c’est.
He’s tired tonight.
— The verb runs straight into an adjective: il est.
That’s my sister in the photo.
— Ma is a determiner — the test fires again.
She’s very happy with her day.
— Adjective straight after the verb: elle est.
Professions: il est médecin, c’est un médecin
To state someone’s job, French drops the article: il est médecin, literally "he is doctor". English says "he is a doctor", so the missing un feels wrong at first — but in French, a bare profession behaves like an adjective. The moment you add an article, or an adjective with it, the determiner test fires and the sentence switches to c’est.
He’s a doctor.
— No article — the profession works like an adjective.
He’s a very good doctor.
— The article un brings the sentence back to c’est.
She’s a baker; she starts at five.
— The profession really does behave like an adjective — it even agrees: boulanger → boulangère.
C’est for general comments, il est for specific things
With an adjective, both phrases exist — they just point at different things. C’est + adjective comments on an idea or a situation in general, and the adjective stays masculine singular. Il est / elle est + adjective describes one specific thing you have already named, and the adjective agrees with it.
French? It’s hard at the beginning.
— A comment on the language in general: c’est, masculine singular.
Have you read this book? It’s difficult.
— Il points back to one specific book.
Plural and other persons
The test does not change with number or gender. Before a plural noun, c’est becomes ce sont; with an adjective, you simply conjugate être: elle est, ils sont, elles sont. One job these phrases never do is say that something exists — for "there is / there are", French uses il y a, which is its own topic.
They’re my new neighbors.
— Plural noun with a determiner: ce sont.
They’re very kind to us.
— Adjective alone, plural subject: ils sont.
Common mistakes
✗Il est un professeur.
✓C’est un professeur.
The article "un" follows the verb, and determiner + noun always calls for c’est.
✗Elle est une infirmière.
✓Elle est infirmière.
After il est or elle est, the profession drops its article — French states jobs the way it states adjectives.
✗Apprendre une langue ? Il est difficile.
✓Apprendre une langue ? C’est difficile.
A comment about an idea in general takes c’est + adjective; il est needs one specific noun to point back to.
✗C’est les enfants de la voisine.
✓Ce sont les enfants de la voisine.
In careful and written French, c’est becomes ce sont before a plural noun. You will hear « c’est les… » in everyday speech — but avoid it in writing.
Check yourself
1 / 4___ un cadeau pour toi.
2 / 4___ professeur dans mon école.
3 / 4Cette soupe ? ___ très bonne.
4 / 4___ mes amis du club de tennis.
Frequently asked questions
When do I use c’est instead of il est?
Look at the word right after the verb. A determiner like un, le, or mon followed by a noun takes c’est (c’est un café); an adjective alone or a profession without an article takes il est or elle est (il est content, elle est médecin).
Why does French say "il est médecin" without "un"?
After il est and elle est, professions behave like adjectives, so the article disappears. As soon as you add the article — or an adjective with it — the sentence switches to c’est: c’est un médecin, c’est un bon médecin.
What is the difference between "c’est difficile" and "il est difficile de…"?
C’est difficile is the everyday way to comment on something in general. Il est difficile de + infinitive (il est difficile de trouver un appartement) means the same thing in formal or written French; in conversation, people usually say c’est difficile de instead.
How do I say "there is" in French — with c’est or il est?
Neither. To say that something exists, French uses il y a: il y a un problème, il y a des questions. That construction is its own topic, separate from the c’est / il est choice.
Memory tip
Read only the next word. A small word like un, le, ma, or ce means c’est; straight to an adjective or a job title means il est.
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