Transgrammatical Semantic Domain: Grammatical Environments Manifesting Expansion
Halliday & Matthiessen (2004: 597):
… the environments of manifestation can be
differentiated in terms of
(i) metafunction — textual (conjunction), logical (interdependency; modification) and experiential (circumstantiation; process
type: relational), and
(ii) rank — clause and
group/phrase [and below]. …
Collectively they thus construe expansion as a
semantic system. This means that
for any given type of expansion we want to express, we have at our disposal a
range of resources.