The verbal group is the constituent that functions as Finite plus Predicator (or as Predicator alone if there is no Finite element) in the mood structure (clause as exchange); and as Process in the transitivity structure (clause as representation).
- Halliday (1985), Pag. 175

A verbal group is the expansion of a verb, in the same way that a nominal group is the expansion of a noun; and it consists of a sequence of words of the primary class of verb.
- Halliday (1985), Pag. 175

The verbal group begins with the Finite, which is the verbal equivalent of the Deictic, relating the process of the ʻspeaker – nowʼ; the Finite does so by tense or modality [...] whereas the Deictic does so by person or proximity, but each of these provides the orientation of the group. The verbal group ends with the Event, which is the verbal equivalent of the Thing; the former expresses a process, which may be event, action, act of consciousness or relation, whereas the latter expresses an entity of some kind, but both represent the core of the lexical meaning.
- Halliday (1985), Pag. 176