Question

She didn't say или she didn't said? В прошедшем времени писать 2 глагола или 1

Answer 1

Вариант номер 1, после  did нельзя употреблять глаголы в 2 и 3 форме

Answer 2

Нет вспомогательный глагол"did" забирает форму прошедшего времени
She didn't say

Answer 3

In the past tense, you should use the verb "said" instead of "say" after "didn't." Therefore, the correct sentence would be "She didn't say." Using "didn't" already indicates a past tense, so you do not need to use another verb in the past tense.