The subject of the study is the description of cases of negative expressions that are difficult for foreign students. For this purpose, the reasons for the existence of problems with the use of negative particles “not” and “neither”, as well as the union “neither ... , nor ...” are considered. Further, the features of the use of negative particles in two-part sentences with a subject in the nominative case and in non-nominative (impersonal) sentences are explained. A system of exercises for practical exercises is also given. Thus, this material can help both teachers and students in mastering this complex topic.