e.g. 'Idący na ulice.....'. Sure, it's not super common, yet IS grammatically correct under given circumstances, no?
No, that should be 'Idąc ulicą' or 'Idąc po ulicy'
Yo hablo = I speak and both only '(Ja)mówię' in Polish cf. '(Ja) mawiam', possible yet unlikely.), has no '-ing' equivalent or even a continuous form.
Bag to differ 'Ja tu teraz przemawiam' I'm speaking now.
Polish therefore has indeed its own "spin", so to speak, on English '-ing'. It's simply reflected differently.
Indeed, that it does.