Pluralia Tantum et verbes supports

It is a long-acknowledged fact that in wide number of Indo-European languages, some noun phrases occur solely the plural. As for French language — only one concerned this study examples as les semailles, pourparlers, environs, pantalons, etc., are very common ones. A subclass these plural invariable nouns (Pluralia tantum), shows specific properties, e.g., phrase does not behave like collective noun; it differs meaning from version singular, and always diachronically posterior to singular. The main point seem involve limited class verbs privileged way. purpose then question status support verb verbs, well their role possible process idiomatization.