O godzeniu przeciwieństw – funkcja wyrażeń jednocześnie i zarazem w języku naturalnym oraz w testowaniu hipotez semantycznych

The article includes an overview of syntactic and semantic features of expressions jednocześnie, równocześnie and zarazem. The analysis is divided into two main parts. In the first one the author discusses the relationship between temporal adverbs and meta-textual units of language. She shows that the meta-textual expressions in question are semantically close to adverbial units – their function is not pointing to the coexistence of events but to organize a sentence and connect two functionally equal units. The second part focuses on the function of the lexical units in question within deviant sentences. The article also brings forth some remarks on the semantic consequences and effects of using the unit jednocześnie in the negation test.