Since teaching colloquial Russian is one of the main goals of teaching Russian language to foreigners the problem of teaching the means of expressing emotions becomes of special importance. In Russian language, emotions are expressed with the help of nonequivalent culturally marked lexical means., knowing which will allow learners to understand emotions of the speaker and to express their own emotions according to the norms of Russian communicative behavior. In the article, one of the most frequent word which is used to express emotions is studied – ну.