This is an irregular verb. It is a model verb.
PresentPresente
Esa idea me parece excelente.
That idea seems excellent to me.
ImperfectPretérito imperfecto
La casa parecía más grande por dentro.
The house seemed bigger inside.
Present SubjunctivePresente de subjuntivo
Aunque parezca difícil, el examen es fácil.
Even if it seems hard, the exam is easy.