hear sb do sth --> heard sb do sth - (u)slyszalem jak ktos co zrobil
hear sb doing sth - (u)slyszalem jak ktos cos robil
Podobnie z innymi sense verbs.
np. I saw him go into the car. Widzialem jak wsiadl do samochodu
I saw him going into the car. Widzialem jak wsiadal do samochodu