French Phrase
Oui, c'est mon sac.
Meaning
The speaker confirms that the bag in question belongs to them. It’s a short, polite way to answer a question like “Is that your bag?” or to assert ownership in a conversation.
When to use
Use this sentence when someone asks you to identify a bag, when you need to claim a bag you’ve just found, or when you’re correcting a misunderstanding about whose bag it is. It works in both formal and informal settings.
✦Grammar Breakdown
Oui,c'estmonsac.
Oui
Simple affirmation meaning “yes”. It can stand alone or precede a statement.
c'est
Contraction of “ce + est”. Used to identify or point out something; always followed by a noun or a noun phrase.
mon
Possessive adjective for masculine singular nouns (my). Use “ma” before feminine nouns.
sac
Masculine noun meaning “bag”. The article is omitted because the phrase uses a possessive adjective.
🗨In Conversation
C'est ton sac ?
Is that your bag?
Oui, c'est mon sac.
Yes, it's my bag.
✕Common Mistakes
c est mon sac.
Do not drop the apostrophe; “c’est” is a contraction of “ce est”.
Oui, c'est ma sac.
“Sac” is masculine, so the correct possessive is “mon”, not “ma”.
Oui c’est mon sac.
A short pause (comma) after “Oui” makes the sentence sound more natural.
↔Alternatives
Oui, c'est mon sac à dos.
Yes, it's my backpack.
Oui, c'est le mien.
Yes, it's mine.
Exactement, c'est mon sac.
Exactly, it's my bag.
Cultural Tip
In French, “c’est” is preferred over “il est” when you are identifying a noun. Also, French speakers often add a brief pause after “Oui” (as shown by the comma) to sound natural. Remember that the gender of the noun determines the form of the possessive adjective: “mon sac” (masc.) vs. “ma valise” (fem.).