The rules of ся-verb usage in professional Ukrainian texts
In the article, the meanings/sub-meanings of Ukrainian ся-verbs are studied, their four basic meanings (reflexive, impersonal, passive and active) and nine sub-meanings of the reflexive meaning are separated and the non-controversial terminological system is proposed. It is shown that due to polysemy of ся-verbs, the same word form can express various meanings. Criteria enabling us to clearly distinguish natural Ukrainian constructions with such verbs from intruded constructions are suggested.