Abstract It is a universal property of argument structure that verbs cannot take more than three arguments -one external and two internal (Hale K, Keyser SJ, On argument structure and the lexical expression of syntactic relations. In: Hale K, Keyser J (eds) The view from Building 20: essays in linguistics in honor of Sylvain Bromberger. MIT, Cambridge, 2002, henceforth H&K); any additional (pseudo)arguments are introduced via (possibly recursive) syntactic or discursive procedures, not lexical. This is the Two (internal) Argument Restriction (TAR), which is part of the basic architecture of natural language. It is argued that a modified version of the theory presented in H&K can account for this restriction. In this proposal, the TA...