I'm not sure how correct this is; however, a dutch person explained it to me as: Hij draagt een jas - He wears a coat.
Hij draagt (g)een jas - He does not wear a coat.
Not sure how coherent this post was, hopefully it can be of some help to you.
It is not exactly related to this unit but I have to ask somewhere, how can we distinguish in Dutch the translation of present Continuos? Because I cannot get it I don't know how to translate the English present continuous to dutch