Questions & Answers about On źle mówi po polsku.
Why is On included here? Can Polish drop the subject pronoun?
Yes. Polish often drops subject pronouns because the verb ending usually shows who the subject is.
So both of these are possible:
Both can mean He speaks Polish badly.
Including on adds emphasis, contrast, or clarity. For example, you might say On źle mówi po polsku, ale jego siostra mówi świetnie — He speaks Polish badly, but his sister speaks excellently.
Why is it źle and not an adjective like zły?
Why does Polish say po polsku instead of just using the word for Polish directly?