To make the active past negative, place مَا before the familiar active form.
MeaningNegative form
he did not doمَا فَعَلَ
they two men did not doمَا فَعَلَا
they men did not doمَا فَعَلُوا
you (one man) did not doمَا فَعَلْتَ
I did not doمَا فَعَلْتُ
The underlying active form stays exactly the same.