A corpus-informed, three-level (pre-intermediate through high intermediate) EFL course aimed at university and college students in American English markets, especially N. E. Asia. In Focus is a corpus
◎教師手冊Business Plus is a three-level, integrated-skills, business English course, from A1 (false beginner) to B1 (pre-intermediate) levels. The Level 1 Teacher's Manual contains a general introduction,
