The aim of this paper is to propose f-structure representations of two different types of negation: constituent negation and eventuality negation. In particular, the paper substantiates a suggestion recently made within the PARGRAM community that two binary-valued attributes are needed. We also show that, while the distinction between constituent and eventuality negation is often treated as epiphenomenal in current linguistics, boiling down to scope, Polish provides evidence for the morphosyntactic status of this distinction. Finally, we show that both types of negation may be used metalinguistically, thus supporting Horn's (1985, 1989) analysis of metalinguistic negation as a pragmatic phenomenon.