The left dislocation construction refers to a syntactic structure in which a constituent is moved to the beginning of a sentence and the original position is usually marked by a pronominal element.
左移位指一种句法结构,其中一个成分被移至句首,此时原来的位置往往通过一个代词成分标出。
This article deals firstly with the structural features of left-dislocated clauses in English.
英语中的左移位句就是一种有着丰富表达力的句式。