Soonhyuck Park. 2003. Coordination in Korean: sharing or ellipsis. Studies in Modern Grammar 32, 25-42. One of the issues of the coordinate construction is to determine the size of the conjunct. In this paper, I examine two approaches to the coordinate structure in Korean, focusing particularly on -ko coordination. By doing so, I will point out some problems of sharing analysis (VP) and ellipsis analysis (TP), and propose that the parallel reading of coordination can be obtained under the enlarged TP-level sharing analysis under a single MoodP, in which both conjuncts have the independent T and Neg. The extraction of the inflected verb out of the second conjunct triggers a violation of the Coordinate Structure Constraint. I propose that this can be remedied by reconstruction at LF, assuming that the tense and negation are interpreted at their base position (Fox(2000), Lin(2002)). It is also shown that reconstruction can`t be implemented with respect to Neg when there is an overt tense morpheme in the first conjunct. This blocking effect is also found in Italian, where the negative quantifier is also proposed to be interpreted after reconstruction at LF, but the intervening TP functions as a barrier in reconstruction (Zanuttini (1997)). This is one of the consequences which can be obtained under the enlarged version of sharing analysis.