“…Therefore, teachers could present alternative schemes (i.e., individual tutoring for students who are living with the elders) to t students' life situations (Wang, 2005). Then, when preparing for lessons, teachers could organize a pre-test for students before class to better understand learners' previous knowledge level, readiness, interests, ability and learning pro le (Jiang & Hua, 2004;Shi & Hua, 2007;Xiao, 2009;Yang, 2008;Zhang, 2013;Zhao, 2008). Next, classroom observation and communication with students face to face were also effective for instructors to know learners, on account of getting an intuitive understanding (Shi & Hua, 2007;Wang, 2005;Wang & Cheng, 2017).…”