This paper mainly presents the verbal group part of a Turkish sentence generator that is currently under development for producing the actual text from its semantic description. To concentrate on the text generation rather than text planning, we assume that the semantic description of the text is produced in some way, currently given by hand. In the generation, we need a linguistic theory to describe the linguistic resources, and also a software tool to perform them in a computational environment. We use a functional linguistic theory called Systemic-Functional Grammar (SFG) to represent the linguistic resources, and FUF text generation system as a software tool to perform them. In this paper, we present the systemic-functional representation and realization of Turkish verbal groups.