Ser vs Estar
Ser and estar both mean “to be” but they have slightly different meaning in Spanish. Ser is used for permanent states, like “Yo soy un chico”. Estar is used for things that can change like “Yo estoy triste”
I am
Yo soy
You are
Tú eres
He/She /You(pol.) is
Él/Ella/Usted(Vd.) es
We / John and I are
Nosotros/Juan y yo somos
They / The boys / You (pl.)
Ellos/Ellas/Los chicos/Ustedes(Vds.) son