Reference to previous work is virtually obligatory in academic texts as a strategy for supporting current claims.

Exploration of interactive features in academic discourse in the perspective of engagement within appraisal theory;

This paper starts with a brief introduction to the grammatical metaphor theory and proceeds to discuss the guiding function of the theory in doing academic discourse translation by contrasting English and Chinese lexicons and grammars.

Based on modality theory framed in systemic functional linguistics,and inspired by the semantic compatibility between modality and hedges,this paper makes an exploration of the usage of possibility-type modality and hedges in academic discourse.

This paper adopts the system of comment adjuncts proposed by Halliday and Matthiessen,and analyzes,by the use of Kconcordance,the comment adjuncts in a corpus of English academic texts.

The thesis aims to have a culturally comparative study of the views of Self and Face in order to illustrate the influence of culture on the writing of academic texts of Chinese and Western scholars respectively and better understand the inner spiritual features of the two cultures by means of words used by Chinese and Western scholars in their academic texts.

By applying the principles of grammatical metaphor in SFG to the analysis of the tense of projecting verbs in the English academic discourse,we find that grammatical m.

Information in English spoken discourse is communicated mainly through intonation devices.

Three experiments were carried out to investigate the role accentuation plays in spoken discourse comprehension.

Difficulties from the course of English listening come from learner s impropriety of strategy,and the fact that the listening materials are mainly spoken discourses which have their own different features from written discoruses.