Ex.:
Cantar
Ustedes cantan.
Regular ending is -an.
<span>Me duele la cabeza.
This means I have a headache.
The reason for this is because it is an I statement and the other that isn't a question is a you statement which isn't explaining how you feel.
Hope this helps!</span>
El estudia
Ustedes escuchan
Ellas necesitan
Nisotros trabajamos
Ella baila
Nosotros sacamos
Tu ayudas
Yo hablo
Usted enseña
Ellos cantan