Notes on the acquisition of L2 English intervention structures: a case of Japanese EFL learners

Abstract This paper discusses Japanese-speaking EFL learners’ acquisition of English object relative clauses (ORC), which have intervention (Relativized Minimality) structures. Specifically, we contrast their early understanding of the ORC and the Subject Control constructions with their late understanding of the Subject Raising ( seem ) construction that exhibits a structural effect of locality on the filler-gap relation. We argue that relativization and the Control structure in Japanese induce hierarchical structures on par with those in English. Therefore, the learners have acquired a way of avoiding intervention during the process of acquiring the ORC and the Control structures in Japanese. L1 grammatical knowledge helps nullify the intervention effect in acquiring the constructions in L2 English. On the other hand, it takes time for them to overcome the effect by learning the seem raising structure with a specific strategy because Japanese does not have a construction similar to it. L1 Japanese critically influences the acquisition of L2 English with respect to the intervention configurations.