Modality

Modals express under what conditions something happens. Toaq has four of them: she, daı, ao, and ea. When used with a complement, like âo x nä y, (where x is a CP) they work like this:

	does x happen in this world?	if it did, would y happen?
she	yes	yes
daı	yes	maybe
ao	no	yes
ea	no	maybe

This is presented in the refgram as

	indicative	subjunctive
necessity	she	ao
possibility	daı	ea

Without a complement, they are given the falling tone, nä isn't used, and the restriction is left a mystery.