範域 (Extent)這個論旨角色在漢語中是個常見卻鮮少被研究的論旨角色 (Halliday, 1964; Teng, 1975; Dowty, 1991; Huang, 1993; Her, 2009)，本研究旨在探討漢語中的範域論旨角色並且為以客體(Theme)，感受者(Experiencer)，以及範域(Extent)三個論旨角色為論元的句子提出合理的解釋，例如 “一本書寫了他三年”此類句子。 本篇論文的第一部份探討漢語中的數量詞(number expression)以及時間詞(duration)並且指出在漢語中他們經常被指派為範域論旨角色(Extent)。接著探討 “一本書寫了他三年”此類句子，並且提出活動動詞(activity verb)以及達成動詞(accomplishment verb)會模仿心理動詞(psych verb)因此產生此類句型，也就是客體(Theme)在主詞位置，而感受者(Experiencer)以及範域(Extent)為受詞。由於動詞 ‘寫’模仿了心理動詞，而且此類句型著重在受詞受到動詞的影響，因此原本的主事者(Agent) ‘他’成為主事者和感受者的複合角色(composite role)，但是只有感受者參與詞彙照映(lexical mapping)。論文最後一部份為“一本書寫了他三年”此類句子進行詞彙照映(lexical mapping)，本篇論文參照Zaenen (1993)的混合解釋方法(mixed account)以及Her (1999, 2003, 2007)的統一映照理論(unified mapping principle)成功的解釋了此類句子的論元體現(argument realization) 。 / Extent (Dowty, 1991; Her, 2009) is also referred to as Range (Halliday, 1964; Teng, 1975) or Domain (Huang 1993). It is a less studied yet commonly seen thematic role in Mandarin Chinese. This thesis aims to investigate the thematic role Extent in Mandarin Chinese, and to propose an explanation for the sentence where the verb has three arguments as Theme, Experiencer and Extent, such as yi4ben3 shu1 xie3le5 ta1 san1 nian2 ‘It took him three years to write a book’. In the first part, this thesis explores the thematic role Extent in Mandarin Chinese, and it is proposed that number expression and duration be considered as Extent. Then, the sentences having three arguments such as in the sentence yi4ben3 shu1 xie3le5 ta1 san1 nian2 ‘It took him three years to write a book’ are investigated. It is proposed that activity verb and accomplishment verb model the syntactic behavior of psych verb so that they can have Theme in the subject position and Experiencer and Extent as two complements. Since the activity verb xie3 ‘write’ models the psych verb and the sentence structure focuses on the [affected] feature of the object, the Agent ta1 ‘he’ becomes a composite role of Agent and Experiencer, but only the Experiencer can participate in the lexical mapping. In the last part of the thesis, the lexical mapping of the sentence yi4ben3 shu1 xie3le5 ta1 san1 nian2 ‘It took him three years to write a book’ is demonstrated. This thesis adopts Zaenen’s (1993) mixed account and Her’s (1999, 2003, 2007) unified mapping principle (UMP) to successfully account for the argument realization of the sentence.