Having reviewed the heated debates on Chinese finiteness and nonfiniteness among many linguists,the author proposes the criterion for judging Chinese finite and non-finite clauses,thus throwing light on the grounds on which Chinese and English pro exists.

Makes an analysis of separated attributive clauses in scientific and technical English,probes into their Chinese translations and puts forward some tentative methods.

This paper takes a short look back on the cross - century dispute firstly, then gives a short analy -sis of the reasons, finally, from the viewpoints of semantics, pragmatics and textlinguistics, focuses on the multi - dimensional study of the split infinitive based on cognitive psychology, functional grammar and cog-nitive pragmatics.

Now people are once again beginning to show interest in split infinitives (SI), as a new construction-split negative infinitive (SNI), which is descended from SI, has gradually come into English in the oral, written or mass media form.