Based on the theories of oral language testing and Bachman's Communicative Language Competence Model, this paper tries to study the effects of different task types on students'oral performance.

本文通过对口语测试的理论进行分析，结合交际能力模式框架，试图探讨口语测试中题型的变化对考生口语表现的影响。

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As for competence on the one hand, adequate language ability or communicative competence does not guarantee good performance;

至于能力，有足够的语言能力或足够的交际能力并不意味着在角色扮演活动中就有好的表现；

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In recent years great importance has been attached to the performance assessment of oral communicative competence.

口语交际能力表现性评估近年得到广泛关注。

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