You're strong
"You are my very dear beloved"
tu es tres joli
Tu es tres jolie.
Tu es tres belle, ma valentine.
Tu es tres intelligent/intelligente (if you reffer to a girl)
you are also nice.
Tu es français means "you (singular and informal) are French."
tu es means you are (singular)
Tu es de Paris means you are from Paris.
You are French
tu es d'où ? means where do you come from? in French.