本研究利用Bronfenbrenner 的生態系統觀點來探究影響臺灣國中學生英 語學習成就之相關因素，並以結構方程模式來探討變項間之關係，問卷調查對 象為709 位臺灣中部地區國中三年級學生。研究結果發現：(1)臺灣國中學生 的「英語學習成就模式」可由父母參與、教師信念∕態度、親師互動、大眾傳 播媒體與網際網路共同塑造。(2)大眾傳播媒體與網際網路可以顯著預測父母 參與和教師信念∕態度；父母參與和教師信念∕態度可以顯著預測學生的英語學 習成就；且父母參與和教師信念∕態度彼此相關。(3)大眾傳播媒體與網際網路 經由父母參與和教師信念∕態度，對學生英語學習成就的完全中介效果成立， 且教師信念∕態度的效果大於父母參與。這些研究結果呼應Bronfenbrenner 的 生態系統理論，驗證在臺灣社會大系統（macrosystem）強調英語學習重要性 之文化氛圍下，外在系統（exosystem）的大眾傳播媒體與網際網路可以藉由 中系統（mesosystem）的父母－教師之互動合作、小系統（microsystem）的父 母參與、教師信念∕態度來共同影響學生的英語學習成就。本研究最後提出具 體建議與議題討論，以供英語學習之參考。

This study aimed to construct a social profile of Taiwanese students’ English language achievement by employing Bronfenbrenner’s perspectives. Data were collected on a sample of 709 ninth graders in central Taiwan via survey questionnaires and were analyzed using structural equation modeling. The results indicated that, first, a Taiwanese Students' English Language Achievement model was constructed by parental involvement, teachers’ beliefs/attitudes, parent–teacher interaction, and mass media/the Internet. Second, mass media/the Internet significantly predicted parental involvement and teachers’ beliefs/attitudes; parental involvement and teachers’ beliefs/attitudes significantly predicted students’ English language achievement; the correlation between parental involvement and teachers’ beliefs/attitudes was significant. Third, the completely mediating effects of parental involvement and teachers’ beliefs/attitudes in predicting students’ English language achievement from mass media/the Internet were supported, and the effect of teachers’ beliefs/attitudes tended to be stronger than parental involvement. These findings were in line with Bronfenbrenner’s theory and demonstrate that the influence of the mass media/the Internet (exosystem) in students’ English language achievement conveyed the degree of parental involvement (microsystem), teachers’ beliefs/attitudes (microsystem), and the interaction between parents and teachers (mesosystem), especially within the context of the socio-cultural atmosphere in Taiwan (macrosystem). Implications and suggestions were discussed and provided to enhance students’ English language learning.