Barrie, I’ve been wracking my brains trying to think of some useful application of limiting “tense” to morphological time-markings on individual words only, and I did come up with one: part-of-speech tagging, particularly of the automated variety. However, even this will only get you so far, due to how unrich English is in such things, with confusions over pasts and past participles, with invariant verbs like
sit and
shut, etc.
This paper discusses these issues. Still, the improved tagset they propose still only recognizes preterites. —
tchrist 2 mins ago