A new approach to calculate the Chinese question semantic similarity is presented,that is divided into two steps,first to extract the semantic representation from the question,and secondly to compute the semantic similarity based on the question semantic representation.

This paper analyses the constitution,semantic representation and usage of middle constructions,which are divided into some sub-structures.

The movement approach argues that middle formation involves NP movement in middle construction.

Conclusions could be drawn after analysis on the semantic cohesion devices in several English advertisings: the possibility of being the central sentences pare is closely related with the amount of the lexical repetition items; the more lexical repetition items, the high possibility of being the central sentences pare in the advertising discourse.

The condition for middle formation has long been a notorious problem.