A sentence as a speech unit is a very complex concept. Currently, linguists are struggling with the question whether a sentence is a language unit or a speech unit. It is this issue that currently causes many controversial opinions among our linguists. Because we cannot say that the problems regarding the linguistic nature of the speech have been completely resolved. In this article, some comments are made about the solution of such problems, as well as the role of the applicative model in the expansion of the sentence form.