Chinese is considered a difficult language to learn by most Western learners, yet recently more and more people are learning Chinese, and increasingly teaching is delivered online. Due to the nature of Chinese and the complexity of online learning, research has not yet produced sufficient information on students' and teachers' interaction during…

Much Second Language Acquisition research focuses on young learners in the conventional classroom. Instructed adult learners, and in particular those who are learning at a distance, have attracted less attention. This group is substantial and growing: the Open University, the largest higher education language provider in the UK, alone recruits…