How do constructions with modal verbs develop in second language learners of English?

The study reported on in this paper uses data from a large, pseudolongitudinal corpus of second language (L2) learner writing to investigate how L2 knowledge of verb-argument constructions (VACs) develops from low-beginner to upper-intermediate proficiency levels. The focus is on learners from two L1 backgrounds (L1 German and L1 Spanish) and on a subset of VACs that contain modal auxiliaries in combination with lexical verbs (e.g., subject-modal-verb, as in I can cook). For each VAC, L1, and proficiency level, frequency lists of verbs were created and compared across datasets. Reference data on the same constructions was extracted from a corpus of L1 writing. Results suggest that modal VACs become more frequent, less predictable, more productive, and more aligned with L1 production as learner proficiency increases. The findings of this study help to expand our understanding of the processes that underlie L2 construction acquisition.