Friday, 20 October 2017

Ellipsis & Validity

Halliday & Matthiessen (2014: 193):
An exchange centring on the validity of an assertion — the identity of the Subject, the choice and degree of polarity — may be realised by clauses consisting of the Mood only, the Residue being established at the start and then presupposed by ellipsis, or by substitution with do.