In French, you have two ways to say "you": "tu" and "vous."

Choosing which one to use depends on how formal or casual the situation is.

1. Use "tu" when:

• You’re talking to friends or family.
• You’re speaking to kids or people who are your age.
• You are in a relaxed or friendly place.

Example: “Comment vas-tu?” (This means, “How are you?”)

2. Use "vous" when:

• You’re being polite to adults you don’t know well.
• You’re talking to a group of people.

Example: “Comment allez-vous?” (This means, “How are you, sir or madam?” or when talking to a group.)

Just remember, "tu" is casual and friendly, while "vous" shows respect.