Tú (with an accent) is an informal way of saying 'you' in Spanish. Tu (without an accent) is a pronoun used to say 'your,' informally. So, you say 'tu' to say 'your.' And you say 'tú' to say 'you.' While these words sound the same when you say them out loud, it's very easy to tell them apart in context.
"¿Cómo estuvo tu viaje a España?"
[Tu] no eres español. In the spanish language, you dont tend to say the ' tu'
España [es-spa-nya]
you: tu
tu no
To say "you too" in Spanish, you say "tu tambien".
you say = tu dices
tu y solamente tu
tu has sido or tu has estado
diga tu is you say in spanish
depends you could say: eres tu or es tu
y tu?