Emergentist, usage-based L2 research has witnessed that emphasizing formulaic sequences as entry points in meaning-based instructional contexts contributes to the development of linguistic comprehension and production. Related studies have thus far striven to find the most effective methods of highlighting these word strings. This study explored…

Language competence in various communicative activities in L2 largely depends on the learners' size of vocabulary. The target vocabulary of adult L2 learners should be between 2,000 high frequency words (a critical threshold) and 10,000 word families (for comprehension of university texts). For a TOEIC test, the threshold is estimated to be…