Thursday, 19 April 2012

Extent Vs Scope [Diagnostics: Measure & Subject]

Halliday & Matthiessen (2004: 264):
There is no very sharp line separating (circumstantial) expressions of Extent from (participant) expressions of Scope of the enhancing type; but there is a distinction between them: Extent is expressed in terms of some unit of measurement … whereas Scope in terms other than measure units … and being a participant, the Scope has the potential of being able to serve as Subject.

Extent: Frequency Vs Usuality [Diagnostic]

Halliday & Matthiessen (2004: 264):
In the temporals there is an additional category of ‘frequency’, how many times?. This is related to the interpersonal category of usuality, but it is not identical to it; usuality is a modal assessment referring to position on a scale between positive and negative (always/never), whereas frequency is the extent of the repetition of the process. The categories of extent and usuality may, however, work together, as in a narrative where habitude is established.

Extent: Interval

Halliday & Matthiessen (2004: 264):
The category of Extent includes ‘interval’, which has the corresponding question form how often?, in the sense of ‘at what intervals?’.

Extent: Structural Realisation

Halliday & Matthiessen (2004: 264):
The typical structure is a nominal group with quantifier, either definite … or indefinite … this occurs either with or without a preposition, the most usual preposition being for

Extent: Spatial Or Temporal [Diagnostic: Interrogative Probe]


Halliday & Matthiessen (2004: 264):
Extent construes … the distance in space over which the process unfolds or the duration in time during which the process unfolds.  The interrogative forms for Extent are how far?, how long?, how many [measure units]?, how many times?.