It is argued in this article that the crucial aspects of syntactic change in the history of English are derived from the fact assumption that the LCA is applied to lexical items individually in the [CP-VP] clause structure of Old English, yielding various patterns of AUX, V and O placement. In the meantime the LCA is applied directly to the clause structure [CP-TP-vP-VP] of Modern English, thus deriving the fixed word order. With the assumption that Old English AUX and V are base-generated in the same position of VP under the [CP-VP] structure, one of both should move out of VP in order to asymmetically c-command each other due to the LCA requirements, deriving AUX-V order or V-AUX order in the surface subordinate clauses of Old English. After the introduction of TP and vP in Middle English, however, it is argued that AUX and V are base-generated in TP and vP respectively, showing the structure where TP asymmetically c-commands vP. Thus the word order change in the history of English is shown to be derived from the LCA availability.

• 김대익(영산대학교)