Formal means that you are talking to someone older than you or someone you would show respect to. Examples are ¿Como se llamas? you are asking someone like a child or someone your age what their name is. ¿Como te llama? is asking the same thing but you would use it when talking to someone older than you, or who is in a higher position than you are.
"Tu eres" means "You are" in Spanish. In the Spanish language there are formal and informal versions of pronouns, and this is using the informal. Formal version of the same expression would be "Usted es".
It can mean "your" (formal) or his, or her.
he/she/you (formal) arrive
You(formal)/he/she/it reads
it means 'it's too formal'
it could mean 1. They/you (formal plural) were 2. They/you (formal plural) went
He/she/you (formal) flirt(s)
you (formal)/he/she returns
You(formal, plural)/they buy
"with your mom"
As one word, it could mean Median female As 'me da', it would mean 'he/she/it/you give(s) me)
You (formal)/he/she/it prepare(s)