The Logical Structure Of The Verbal Group

Halliday (1994: 198):

Verbal Group As Head Of Nominal Group

Process vs Predicator vs Event

The game	has	been	put	off	until Sunday
Goal	Process: material				Location: motion: towards
Subject	Finite	Predicator		Adjunct	Adjunct
	Finite	Auxiliary	Event

Verbal Group Complex (Showing Verbal Group Structure)

has	been	tending	to think
a			x b
a	b	c
Finite	Auxiliary	Event	Event

tense (relative to the speech event):

present in past in present