This study examines the acquisition order and pattern of Korean particles in the interlanguage of migrant workers who were learning Korean as L2 in naturalistic settings with little exposure to formal instruction. Data collected from 48 Chinese and Indonesian workers through semi-structured interviews were analyzed, and the observed pattern was compared with that of instructed L2 learners reported in Hwang (2002). The results are the following: 1) A strong affinity was shown between the rank order of the particles in the workers' data and the frequency of particles in a native corpus presented in Se and Gu (2005), attesting the crucial role input plays in L2 acquisition. 2) The acquisition pattern of the workers was both similar and different from that of the instructed learners, the difference resulting from 'transfer of training'. 3) L1 influence was evidenced in the fact that the Japanese L1 learners passed through the developmental sequence faster than the other L2 groups.

• Hyeson Park(Keimyung University)