Informal:
* Tu: This is the most common and informal way to say "you" when addressing one person. It's used with friends, family, and people you know well.
* Você: This is a slightly more polite and formal way to say "you" to one person. It's often used in formal settings or when you want to be respectful.
Formal:
* O senhor/A senhora: This is the formal way to address a man/woman, often used in situations with a lot of respect like addressing someone in a professional setting.
* O senhor/A senhora/Vossa Senhoria: This is a very formal and archaic way to address someone in a position of high authority.
* Vós: This is the plural form of "tu" and it's rarely used nowadays.
Plural:
* Vocês: This is the plural form of "você" and it's used to address multiple people informally.
* Vocês/Vós: This is a rare and archaic way to address multiple people formally.
Important Note:
* In some parts of Brazil, "tu" is used more commonly than "você." However, "você" is generally considered more polite in most situations.
* If you are unsure which form to use, it's always safer to use "você."
I hope this helps! Let me know if you have any other questions.