This paper develops Ramchand’s first phase syntax theory by investigating the Mandarin directional serial verb construction. Specifically, the position of the theme argument in these constructions is investigated, and two major word order variants are identified: the VOV type and the VVO type. The former are argued to be accomplishments, whereas the latter are achievements. The analysis embraces Ramchand’s spirit that three sub-eventive projections (InitP, ProcP, and ResP) exist universally as the basic building blocks in the first-phase syntax, and it proposes that the surface word order alternation and situation type shift is the consequence of the occurrence/absence of the ResP and the different insertion position of the directional morphemes.