Language/Ukrainian/Grammar/Past-imperfective-Tense

The past imperfective denoted an action that was in progress or occurred at some moment in the past. It presents the action as:

1) repetitive or habitually occurring.

Тарас рідко писав листи. - Taras rarely wrote letter.

2) an open-ended process without regard for whether or not it was ever completed.

Тарас писав книгу вчора. - Taras wrote a book yesterday.

3) a one-time specific action in the past, a statement of fact with the implication that there is no need to repeat the action again. In this meaning it is often accompanied by the verb вже - already. In this usage, the imperfective past is synonymous with the perfective past.

Ми вже бачили цей фільм - We already saw this film.

Past tense ending ( with the verb "їсти"- "to eat" as an example):

Я	їв/їла	ми	їли
ти	їв/їла	ви	їли
він/вона/воно	їв/їла	вони	їли

Source

https://ukrainian-zone.com/series/ukrainian-grammar/13past-imperfective-tense

Other Lessons

• Adverbs of time, place, intention and cause
• Personal Pronouns
• Verbs
• The Adjective: Degrees of comparison
• Gender
• Negation
• Nouns
• Possessive pronouns
• Pronoun
• Feminine