0 Abstract This paper aims to provide an in-depth analysis of the semantic and syntactic structures of Thai expressions for arrival (i.e. an entity arrives at a goal after locomotion). I present a new perspective in which Thai arrival expressions are viewed as a subtype of 'accomplishment 1 construction' consisting of two equipollent verbal components for cause and effect events (Takahashi 2007). The combination of a preceding locomotion event denoted by the first component and a subsequent arrival event denoted by the second component constitutes a macro-event 2 of accomplishment expressing that the locomotion event gives rise to the arrival event. Thai grammar does not require the formal distinction between finite and non-finite verbs, and therefore more than one verb in a plain form is allowed to co-occur in a clause. This fundamental morphosyntactic property of Thai enables the speakers to produce arrival expressions as well as other types of the accomplishment construction with a coordinate, yet mono-clausal, structure. 1 Originally, the term 'accomplishment' was used by Vendler (1967: 102) to refer to one of the four classes of lexical aspect or 'Aktionsart' (namely, 'state', 'achievement', 'activity' and 'accomplishment'). The accomplishment aspect, which resides in the lexical meaning of, e.g., such English verbs or verb phrases as melt, freeze, learn in one hour, draw a circle, etc., is generally characterized to have the following distinctive features: [-static], [+ telic] (i.e. entailing a clear endpoint), and [-punctual]. However, Takahashi (2007) has applied this term to feature the aspectual nature of Thai constructions consisting of two serial verb phrases that express a cause-effect phenomenon which, the speaker construes, naturally occurs in the given pragmatic, physical, social and cultural context, and whose consequence is of interest to the speaker. 2 Talmy (2000: 213-288) gives an account of the notion 'macro-event' as follows. A macro-event is a single fused event composed of two simpler events holding some relationship, which is a fundamental and pervasive type of event complex in the underlying conceptual organization of language, and it is amenable to expression by a single clause. Thus, the notion of macro-event is meant to be a cross-linguistically valid one, and accordingly, I utilize this notion to account for the underlying structure of Thai expressions for complex event of arrival (i.e. an entity arrives at a goal after locomotion). However, I do not perfectly agree with him; in particular, I doubt the universal validity of his a priori postulation that "a macro-event consists of a pair of close-related Figure-Ground events (ibid.: 213)", put differently, consists of "a main event and a subordinate event (ibid.: 215)". Having examined Thai expressions for a variety of complex events (cf. Takahashi 2007, 2009), I believe that a macro-event may consist of two coordinate sub-events, which we may call 'complex figure' event (Croft 2001: 327). In this paper I try to show that Thai arrival expressions, which form a major category of Thai construction for a macro-event of accomplishment (cause-and-effect), do involve two coordinate sub-events: a prior locomotion event and a posterior arrival event (see Section 2).