Introduction
Tess of the d'Urbervilles, written by Thomas Hardy in the late of 19th century, is a famous classical book in the world. In this novel, Hardy demonstrates his deep sense of moral sympathy for England's lower classes, particularly for women. In this book, he portrays a young woman victimized by the self-righteous rigidity of English social morality. Many people can hardly accept that this woman is pure because on the hand she is chastily but on the other hand she kills somebody. That opinion only exists in Hardy's time, now, more and more people admire that Tess is a pure woman.
Tess’s purity especially expresses in the aristocratic family and her love. This paper will analyze them respectively.
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Abstract..................................................i

Contents.................................................ii

Introduction..............................................1

1. Purity in aristocratic family.......................

1.1 Tess's father is self-setisfacted with the noble status

1.2 Alec d'Urbervilles seizes a noble fame to improve
his reputation.........................

1.3 Angle Clare is practically the old family.........

1.4 Tess d'Urbervilles insists on being a labourer.....

1.4.1 Tess doesn't want to show off the rich clan......

1.4.2 Tess wants to remain the labourer status........

2.Purity in love.................

2.1 The spiritual love of Angel

2.2 The animal love of Alec......

2.3 The pure love of Tess...

2.3.1 Tess's loyal love for Angel......

2.3.2 Tess's bitter hated for Ales........
Conclusion...............................................

Bibliography.............................................

Acknowledgement..........................................

[1] Hardy Thomas. Tess of the d'Urbervilles. The Penguin English Library,1978: 74-403.
[2] Lance St John Butler. Thomas Hardy. Cambridge: Cambridge University Press,1980:8.
[3] 马弦.苔丝悲剧形象的“圣经”解构，外国文学研究[J].2002（3）：51.

苔丝是托马斯·哈代在《德伯家的苔丝》中全力塑造和歌颂的悲剧主人公.事实上，一部《苔丝》写的就是社会如何把一个纯洁，质朴，正直，刻苦聪明的农村姑娘逼得走投无路，最终杀人的故事。
苔丝的纯洁性主要突出地表现在对身世和爱情上。本篇论文就从这两个方面入手，对比分析了他人和苔丝对待世家身世和爱情的态度，从而论证苔丝自始至终都是纯洁的。
关键词：世家身世；爱情；苔丝；纯洁