no significantРdifference between them. (3) Interaction effects on learning achievement existed between subtitle presentation andРattention. In the low level and medium level of attention, the students in the group plete subtitles + summaryРsubtitles get the best grades; in the high level of attention, the students in the group of summary subtitles get the bestРgrades. As a result, the designer should select the subtitle presentation form based on the interest, learning contents andРlearner characteristics when designing the mobile learning resources, in order to achieve the optimization of mobileРcourseware design and maximize the efficiency of study.Р M-Learning; M-Learning Courseware; Subtitle; Attention; Learning Achievement; Experimental StudyР Keywords:Р 现代远程教育研究Р.104. 2017年1期/总145期