We clarified the criteria, types, characteristics of ergative verbs, absolutive verbs, unergative verbs ... number of ergative verbs which mainly focusing on verb-complement construction. ... ergative verbs, and proposed the differences from other verbs and related sentences, such as middle construction
Unergative verb requires a subject that is consciously responsible for what happens. ... Put is causative accomplishment verb in the quoted lines. ... So it’s Unergative. Professor taught us like a following chart.
(42) vP PRN v' He v VP ø +read V DP read the book (43) Unergative vs. ... VP shells in transitive, unergative, unaccusative, raising and locative structures (41) He read the book ... The latter is a verb which has a THEME role. (44) a. Shall we lunch? b. Why not guess?