The following paper investigates the occurrence of copulas in copula sentences on the basis ofpreceding researching cross-linguistically, and takes an account of this subject in the view ofcognitive psychology, then I attend to explain some related issues of it on the theoretic frame ofuniversal grammar and psychology.

A Research into the Origin and Formative Cause of the Copula 是 in Chinese;

This paper analyzes the views in the different periods,and according to the theory of copula,advances a new view that negation,as a kind of human s thinking type,mainly gives expression to human s operation to the thought(idea),which,in a sentence,is simil.

The paper makes a systematic summary of the research of scholars about the name,scope,part of speech of copula,syntactical function and semantic function as well as the relation between copula and its compositions.

Automatically tagging relatives in complete sentences is a basal researchful problem in the nature language procession field.

You must understand its meaning and grasp the use of the relative, then you ll grasp it indeed.

Automatically tagging relative in the complete sentences is the basal researchful problem,It is the base of tagging level、machine translation.

This paper discusses the eductability of connectives of Chinese complex sentences from eight aspects:omission capability,extending capability,nesting capability,pausing capabili- ty,commanding capability,corresponding capability,transposition capability,position factor.