Модалните конструкции sein + zu + Infinitiv – съм + за + nomen actionis

Two types of contrastive studies can be distinguished: a) contrastive analysis directed towards some specific features in one of the languages which might have remained unnoticed without the foreign language background; and b) contrastive analysis proper, comparing both isomorphic and non-isomorphic structures in the two languages. By contrast it becomes clear that a modal construction congruent with the German construction sein + zu + Infinitiv exists in Bulgarian. The two constructions are parallel in syntactic and semantic terms, as well as in their historical development. There are some differences mainly on the stylistic level. The use of the Bulgarian construction is limited within the colloquial speech register, whereas the German construction occurs in all functional styles.