This is a regular verb. It follows the conjugation pattern of the verb hablar.
PresentPresente
Nunca abandona a sus amigos.
He never abandons his friends.
PreteritePretérito indefinido
Abandonamos la idea después de muchos problemas.
We abandoned the idea after many problems.
Negative ImperativeImperativo negativo
No abandonen sus sueños.
Don't abandon your dreams.
Present SubjunctivePresente de subjuntivo
Es importante que no abandones tus estudios este año.
It's important that you don't abandon your studies this year.