Using sociolinguistic methods to collect data,the paper makes an analysis of the conversational functions of Chinese-English code-switching(CS)on EFL college campus.

On the discourse function of Buyei folk literature in Luoping;

fromthe perspective of discourse function,the paper explores the features of comparative expressions in Chinese as well as English,stressing the functional consistency in Chinese comparative expressions.

Using two corpora of English abstracts of research articles(abstract for short) on linguistics produced by native English speakers and Chinese English learners,this article compares native speakers and Chinese learners use of first person pronouns in abstracts,especially discourse functions first person pronouns perform.

The discourse functions of marked initial elements in English declarative sentences will be examined in their textual and pragmatic aspects.

In the paper,their structural features,properties and or igins,and discourse functions are compared and analyzed,and exposed as well are t heir functional features which are both opposite and complementary to each other .

This paper, on the basis of previous studies, has mainly analyzed the syntactic and semantic characteristics,and discourse functions of the adverbs"mada"and"moo"in Japanese when they modify nominal predicates.