Delimitation: aux vs. mai

All forms of the verbs sein, haben und werden are tagged as aux. The copula and possession/becoming constructions that sometimes turn these verbs into main verbs are tagged as aux in all these cases. (The decision is purely formal/lexical).

type=aux type=mai

D e s c r i p t i o n E x a m p l e D e s c r i p t i o n E x a m p l e

werden in become meaning Sie ist zum Monster geworden/aux   any other main verb in become meaning Sie hat sich in ein Monster verwandelt/mai  

possession expressed by haben Er hat/aux   keinen Busfahrplan. Possession expressed by any other main verb Er besitzt/mai   keinen Busfahrplan.

copula contruction including sein Ist/aux   er wirklich Lehrer? copula construction including any other main verb Er wirkt/mai   müde