I would like to take this opportunity to express my heartfelt thanks to all the teachers and friends who have offered me all kinds of help in accomplishing this paper.
First of all, I owe great gratitude to my turtor, Mr. Zhou Changjun, whose constant encouragement has motivated me throughout the completion of this thesis. Her genuine regard for students and enthusiasm for teaching have greatly impressed me. It is under her patient guidance, incisive criticism and detailed revision that this thesis can finally assume its present shape.
Likewise, I would like to extend my thanks to all my teachers whose lectures have given me considerable instruction and inspiration. I owe my gratitude to all my classmates who have participated in the research and offered their kind cooperation and support during the phase of data collection.
Finally, I would like to express my heartfelt gratitude to my family for their sincere concern and constant support.

Chapter 1 Introduction
The paper , first of all, simply describes Susan Sontag and her stories; then, brifly introduces the novel, and especially probes into the problem of the heroine–Polish actress–Marina’s transformation of her identity. And the paper farther discusses the process, the substance, the connotation and the extension of the transformation of Marina’s identity, and comprehends the author’s purpose. At last, of ourselves, we could know the great woman Sontag better. I wish that readers will get more information about Susan Sontag, her works and her characters.
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Chapter 1 Introduction
Chapter 2 About Susan Sontag
Chapter 3 TheSubmaryoftheNovel In America
Chapter 4 Process of Transformation of the Heroine’s Identity
Chapter 5 Substance the Transformation of the Identity
Chapter 6 Connotation of the Transformation of the Identity
Chapter 7 Extension of Transformation of the Identity
Chapter 8 Conclusion

Reference
[1] Peter•Berg，《漂泊的心灵——现代化过程中的意识变迁》[M]，曾维宗译，台北：巨流图书公司，1985年版。
[2]（美）苏珊•桑塔格著 廖七一 李小均译, 《在美国》, 译林出版社 2003.5
[3] 申丹著, 《叙述学与小说文体学研究》, 北京大学出版社1998.7
[4]（英）爱•摩•福斯特著 苏炳文译 黄锡祥校,《小说面面观》,花城出版社 1987
[5] 王岳川著, 《后殖民主义与新历史主义文论》, 山东教育出版社1999
[6]（美）查尔斯•鲁阿斯著 粟旺译, 《美国作家访谈录》, 中国对外翻译出版公司 1995

摘要
苏珊•桑塔格作为美国过去半个世纪以来最醒目的知识分子，其文学作品产生广泛的影响。《在美国》是其最后一部小说。这部小说从一个旁观者的角度记录了一个美国移民即波兰舞台皇后玛琳娜的移民过程及移民生活的点滴.本文重点阐明了小说女主人公从波兰移民到美国的个人身份转变问题，并进行进一步的分析, 提出了现代化进程带来了一群“飘泊的心灵，失落的个人”，并得出了主人公的身份将永远搁置的结论。以此，体现了作者苏珊-桑塔格对流亡者和流亡现象的关注和忧思，体现了作为萨特式独立特行的知识分子所具有的责任感和人性化的一面。
关键词： 飘泊 失落 转变 身份