He knows many English poems by heart. ( В прошедшие и будущие )

Question

He knows many English poems by heart. ( В прошедшие и будущие )

Answer 1

Past Simple (прошедшие): He knew many English poems by heart.

Future Simple (будущее): He will know many English poems by heart.

Answer 2

He knew many English poems by Heart. (в прошедшей)
he will know many English poems by heart ( в будещем)