He is tall.
Tú ________ estudiando.
Ella - ser
I am tired.
You formal are brunet.
To talk about charactaristics (longterm)
uds. - ser
To talk about where you are (at the moment)
To talk about relationships
nosotros - ser
To talk about how you feel (at the moment)
They are bald.
Nosotros ________ en la escuela.
Tú form - ser
ellos - estar
Uds. ________ estudiantes.
Ella ________ contenta.
Yo form - ser
Ud. - estar
We are busy.
yo - estar
Yo ________ de Costa Rica.
To talk about where you are from (origin)
nosotros - estar
Tú - estar