Taking this as the starting point, the author, by appealing to theory of context of situation suggested by Halliday and functional equivalence by Nida, this paper focuses on the discussion of how to achieve functional equivalence in literature translation through faithful representation of the context.

The application of the situational context to the vocabulary teaching;

Context is divided by this paper into three parts: co-context、situational context and cultural context.

Starting with the analysis of the translation of Xianggang Huigui,this paper analyzes the importance of diction and points out that whether it can be done properly exercises an important effect on catching the exact meaning of the original and producing better versions,and analyzes context,the key factor influencing the choice of words,from language context,situational context,and cultural con.

He thinks that the modern society is a "simulation" world on the basis of mass media, where electronic media has changed communication circumstance of media and the new speech situations as well as discourse structure brought constructive significance to subject.

Systemic Functional Linguistics,as the theoretical framework,is applied to the analysis of a text "Gettysburg Address"by Abraham Lincoln from the perspective of context of situation and cohesion.

Culture background and context of situation can′t be ignored when understanding and translating English idioms.