本研究旨在探討影響台灣非英語系大學生英語學習動機之因素，並建構動機模式。透過文獻探討，此動機模型包含以下五種動機成分：「融合取向」(Integrativeness)」、「工具取向(Instrumentality)」、「內在取向(Intrinsic Orientation)」、「外在取向(Extrinsic orientation)」及「動機行為(Motivational Behaviors) 」。本研究之研究對象為302位來自台北市8所大學的非英語系大一生。研究工具為包含「融合取向」(Integrativeness)」、「工具取向(Instrumentality)」、「內在取向(Intrinsic Orientation)」、「外在取向(Extrinsic orientation)」及「動機行為(Motivational Behaviors) 」五個量表的動機問卷。資料分析方法為結構方程模式(Structural Equation Modeling)。首先探討初始假設模型與樣本的適配情形，其次根據修正指標及相關理論進行模式修正，修正後之模式與資料適配。修正後的模式中，「融合取向」(Integrativeness)」、「工具取向(Instrumentality)」、「內在取向(Intrinsic Orientation)」、「外在取向(Extrinsic orientation)」彼此相關。然而，在此四變項中，僅「融合取向」(Integrativeness)」對於「動機行為(Motivational Behaviors) 」有顯著影響。此結果顯示「融合取向」(Integrativeness)」之定義可能已有所轉變。而研究對象之背景、變項之間的相互抵銷作用以及中介變項可能是其餘三變項對於「動機行為(Motivational Behaviors) 」無顯著影響之因。文末進一步提出相關建議，以期能作為台灣英語教師及未來研究參考。 / The purpose of this study was to investigate what kinds of motivational component influence motivational behaviors of Taiwanese non-English majors, and to propose an empirically grounded model of English learning motivation which presented the relationship among these components. The components in the model are Integrativeness, Instrumentality, Intrinsic Orientation, Extrinsic orientation and Motivational Behaviors. The participants in the study were 302 freshmen studying in Taipei City. The instrument was an adapted questionnaire composed scales of Integrativeness, Instrumentality, Intrinsic Orientation, Extrinsic orientation and Motivational Behaviors. Structural Equation Modeling (SEM) was applied to analyze the data. The hypothesized model was tested and modified using the 302 samples of the participants. In the final model, the four components, Integrativeness, Instrumentality, Intrinsic Orientation, and Extrinsic Orientation were found to correlate with one another. However, among the hypothesized influences on Motivational Behaviors, namely, the influences from Integrativeness, Instrumentality, Intrinsic Orientation, and Extrinsic Orientation on Motivational Behaviors, only the path between Integrativeness and Motivational Behaviors was left in the modified model. The result may indicate the transfer of the definition of Integrativeness, and the two removed paths and one no significant path may be explained by the background of the participants, the compensatory effects, and the existence of mediating variables. Finally, it is expected that the results of the present study offer a new perspective to understand Taiwanese EFL learners’ English learning motivation, and provide pedagogical implications for English instructors in Taiwan and future studies.