Through the analyses of the strategies of positive politeness,negative politeness and off-record,the author suggests that such strategies should be used tactfully according to different situations.

A Study of the Gender Differences in the Use of Language in Using Positive Politeness Strategies in Chinese Communication;

Based on Brown & Levinson ’s Face Theory, this paper analyses politeness phenomenon in Chinese preface by using the positive politeness strategies and negative politeness strategies proposed by Face Theory.

Through the analyses of the strategies of positive politeness,negative politeness and off-record,the author suggests that such strategies should be used tactfully according to different situations.

Furthermore,it mainly analyzes the application of positive and negative politeness among the dialogues between shop assistants and customers.

The experiment to analyze invitation refusals between different sexes conducted on Chinese College students supported the views of negative politeness and face threatening acts identified by Brown and Levinson.

And now the positive comity has been arisen.

However,foreign trade English has its special language features and expressions,courtesy for one.

This article makes it clear that tourist staff should be dignified in appearance, graceful in manner, and elegant in language and from these three aspects to strengthen their courtesy cultivation and foster good professional manner.

As per business properties and ethics,business language must comply with the 3"C" principles: clearness,conciseness,courtesy.

Investigation and analysis of politeness in intercultural daily speech communication;

Application of Politeness Principle in English Class Teaching;

On Politeness Translating Between Different Culture Communication;