Since the 1990s, grammatical complexity is a topic that has received considerable attention in various fields of applied linguistics, such as English for academic purposes, second language acquisition, language testing, and second language writing (Bulte & Housen, 2012). Many scholars in applied linguistics have recently argued that…

Despite its importance of academic language, research on academic language is often limited to academic vocabulary and focused on the English language learners. Informed by systemic functional linguistics, this study examined adolescents' use of academic language and the relationships between its use and students' reading ability and their writing…

Second language (L2) learners notoriously have trouble using articles in their target languages (e.g., "a", "an", "the" in English). However, researchers disagree about the patterns and causes of these errors. Past studies have found that L2 English learners: (1) Predominantly omit articles (White 2003, Robertson 2000), (2) Overuse "the" (Huebner…