Constraints on the argument structure of dative verbs in advanced L3 English

ABSTRACT This study investigates the acquisition of the argument structure of dative verbs in L3 English. The learners are L1 Moroccan Arabic–L2 French adults advanced in L3 English. The study considers whether the L3 learners in a formal foreign language instruction context can develop nativelike sensitivity to the semantic and morphological constraints on the distribution of double objects and prepositional phrases in dative constructions. The results of a grammaticality judgment and correction task reveal overgeneralization effects on non-alternating verbs in advanced L3 ultimate attainment. At the same time, the L3 learners show nativelike sensitivity to instances of subtle semantics, but not morphology, associated with dative constructions. The analysis of individual results provides empirical evidence supporting the claim that syntax–semantics and syntax–morphology interface properties are acquirable even if they are language-specific and previously inactive in the L1/L2. Thus, in ultimate attainment, L3 acquisition is another instance of L2 acquisition.