基于学生行为表现的评估方式,从动态画面呈现学生的学业成就。展示(presentation)活动作为行为评估表现的一种实施途径,受到中职英语教师的欢迎,然而,实际实施过程中常有“走过场”、效率不高等情况。本文分析展示活动出现“瓶颈”的成因,拟从实践方面阐述如何提高中职英语课堂展示活动实施的有效性。 Based on the assessment of students ’performance, students’ academic achievements are presented from the dynamic picture. Presentation is an implementation approach to performance assessment. It is welcomed by English teachers in secondary vocational schools. However, there are often “walking throughs” in the actual implementation process, and the efficiency is not high. This article analyzes the reasons for the emergence of “bottleneck ” in the demonstration activities and expounds how to improve the effectiveness of the implementation of the demonstration activities in English classes of secondary vocational schools from a practical point of view.