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)

Answer 3

"He knows many English poems by heart" is a sentence written in the present tense, indicating an action that is happening currently. To indicate both past and future actions, we can modify the sentence as follows:

Past tense: "He knew many English poems by heart." (This implies that at some point in the past, he had memorized many English poems.)

Future tense: "He will know many English poems by heart." (This suggests that at some point in the future, he will memorize many English poems.)

Present tense (original): "He knows many English poems by heart." (This indicates that currently, he has already memorized many English poems.)

Remember, the choice of tense depends on the context and when the action is happening or has happened.