This is an irregular verb. It is a model verb.
PresentPresente
Siempre traigo fruta fresca del mercado.
I always bring fresh fruit from the market.
PreteritePretérito indefinido
Marta trajo un pastel a la fiesta.
Marta brought a cake to the party.
FutureFuturo
Mañana traeremos los libros a clase.
Tomorrow we will bring the books to class.