Portuguese Phrase
Eu sou o John Doe.
Meaning
The sentence means “I am John Doe.” It introduces the speaker’s identity, using the verb ser to state a permanent characteristic – the person’s name.
When to use
Use this phrase when you meet someone for the first time, need to give your full name in a formal or semi‑formal setting, or when you want to emphasize that you are that specific person (e.g., on a business card or in a presentation).
✦Grammar Breakdown
EusouoJohnDoe
Subject pronoun (Eu)
Eu means 'I' and is the subject pronoun used for the first person singular.
Verb ser (sou)
Sou is the first‑person singular present of ser, used for permanent identity or profession.
Definite article before male names (o)
In Brazilian Portuguese it is common to place the masculine article o before a male proper name, especially in informal speech.
Proper name (John Doe)
Foreign names are usually kept unchanged; they can be preceded by the article or not, depending on style.
🗨In Conversation
Oi, tudo bem? Eu sou o John Doe.
Hi, how are you? I’m John Doe.
Prazer, John! Eu sou a Maria Silva.
Nice to meet you, John! I’m Maria Silva.
✕Common Mistakes
Eu é o John Doe.
The verb ser must agree with the subject; use sou for ‘I am’, not é.
Eu sou John Doe.
When the name is foreign you can omit the article; using the article is optional, not mandatory.
Eu sou a John Doe.
Do not use the feminine article a before a male name.
↔Alternatives
Eu me chamo John Doe.
My name is John Doe.
Meu nome é John Doe.
My name is John Doe.
Eu sou John Doe.
I am John Doe.
Cultural Tip
In Brazil it is very common to add the article o (masculine) or a (feminine) before a person’s name, especially in casual conversation – e.g., o Carlos, a Ana. In Portugal the article is used less often, so you’ll hear “Eu sou John Doe” more frequently there. Also, when introducing yourself in a formal context, “Meu nome é …” or “Eu me chamo …” is often preferred over the article‑based form.