| Abstract | 第1-6页 |
| 中文摘要 | 第6-9页 |
| 1. Introduction | 第9-11页 |
| ·Background of the analysis | 第9页 |
| ·The objective of the analysis | 第9-10页 |
| ·The significance of the analysis | 第10-11页 |
| 2.Literature Review | 第11-21页 |
| ·The studies of politeness in western countries | 第11-16页 |
| ·Lakoff’s politeness strategies | 第11页 |
| ·Grice’s cooperative principle | 第11-12页 |
| ·Geoffrey Leech’s politeness principle | 第12-14页 |
| ·Brown and Levinson’s face theory | 第14-15页 |
| ·Three politeness systems: Deference, Solidarity, and Hierarchy | 第15-16页 |
| ·The studies of politeness in China | 第16-21页 |
| 3 Chinese-English translations in business letters under Leech’s politeness principle | 第21-29页 |
| ·Chinese-English translations in business letters according to Leech’s sympathy maxim, tact maxim and generosity maxim | 第21-23页 |
| ·The use of euphemisms in Chinese-English translations | 第21-23页 |
| ·Chinese-English translations in business letters according to Leech’s agreement maxim | 第23-27页 |
| ·Translations of monetary units | 第23-24页 |
| ·The use of adjectives, adjective phrases and prepositional phrases | 第24-25页 |
| ·Accurate translations of time | 第25-26页 |
| ·Exact translations of brand names and quantity units | 第26-27页 |
| ·Chinese-English translations in business letters according to Leech,s politeness approbation maxim and modesty maxim | 第27-29页 |
| 4.English-Chinese translations in business letters under Gu Yueguo’s politeness principle | 第29-35页 |
| ·English-Chinese translations in business letters according to Gu Yueguo’s the self-denigration maxim | 第29-30页 |
| ·English-Chinese translations of appellations in business letters according to the Yueguo’s the address term maxim | 第30页 |
| ·English-Chinese translations in business letters according to Gu Yueguo’s the refinement maxim and the virtues-words-deeds maxim | 第30-33页 |
| ·English-Chinese translations in business letters according to Gu Yueguo’s the agreement maxim | 第33-35页 |
| 5. Similarities and differences of Chinese-English and English-Chinese translations in business letters under the politeness principle | 第35-41页 |
| ·Similarities | 第35-38页 |
| ·Differences | 第38-41页 |
| 6.Conclusion | 第41-42页 |
| Bibliographies | 第42-47页 |
| Acknowledgements | 第47页 |
