EN
The author of the paper asks the question why Slovak speakers use grammatical forms such as “budeme sa sústrediť” or “vidíme sa (zajtra)” in spite of their standard command of the grammatical rules. The linguists refer to this by saying that the speakers are under the influence of negative factors and the author draws attention to three reasons: the power of tradition, logic and ideology. A grammatical behaviour like this can be regarded as a cue that we have to do with two modalities of the grammar. However, the linguists and people under the influence of the school start from the assumption that the grammar exists only in the rational modality and they are reacting to the grammatical behaviour in the linguistic practice according to their assumption. This text is meant to encourage readers to overcome this convention and to pay attention to the grammar in the practical modality too. The author suggests that we could begin our exploration of the grammar in this modality by thinking about the grammatical disposition of fluent speakers and this can be done by starting with the theory of background of J. R. Searle.