Through a discussion of the theories of discourse marker and relevance, this paper makes the claim that the modern Mandarin utterance-final particle ba should be recognized as a discourse marker as well as a modality particle.

This paper seeks to find a way of incorporating discourse markers in our dailyreading and writing instructions from a perspective of discourse.

As semantic cohesive ties, discourse markers are used to create coherence.

The present paper is a discussion on the definition, forms, positions of the discourse markers in English and the various logical concepts that they indictate.

The discourse markers play an important part in the discourse coherence, it has its potentiality and implication, and they can not only connect the relations between the sentences and the propositions but also grasp the pulse of discourse, distinguish the main details and identify facts and conclusions.

This pɑper describes the importɑnce of using discourse mɑrkers in teɑching English reɑding texts ɑnd teɑching ɑctivities which focus on using discourse mɑrkers to teɑch English reɑding texas well.

As an exercise of functional discourse analysis,this paper,based on Halliday s systemic functional linguistics,focusing on the genre of Hong Lou Meng,attempts to analyze how the genre markers of the novel are treated in Yang Hsien-yi and Gladys Yang s version.