本研究从频数测量和比率测量两方面探讨准确性指标与口语成绩之间的关系。本研究采用诱导任务方法，收集了61篇中国英语专业学生口语语篇。通过对准确性指标数据分析，本研究获得三个主要发现。对口语教学以及引导学生注意形式与意义的连接，提高语言使用的准确性有一定的启示。

Using frequency and ratio measures as indicators of English Oral Performance Accuracy, the present study explored the relationship between oral accuracy measures and oral performance quality. Through an induction task a corpus of 61 speech samples by English majors was built. Results based on the analysis of this corpus indicate that 1) when the external factors such as task condition, duration and attitude of the subjects are controlled, the number of error-free clauses, number of error-free T-units and the ratio of correct verb forms are effective measurement tools that can affect scores of oral test; 2) The total number of verb phrases, T-units and the ratio of correct verbs verb forms are the most precise predictors of the quality of oral performance; 3) Number of error-free clauses, number of error-free T-units and the ratio of correct verb forms are especially distinctive. The implication for Spoken English Teaching is to cultivate students the capacity of producing longer stretch of discourse, to guide students to pay attention to the match between form and meaning based on verbs and their collocation, and to improve the accuracy of students’ language use.