Abstract: The article discussed the generative process of the ba word sentence constituted by one extensive verb core strcture and two verb cores strcture,and discussed the generative process of the special kind of the ba word sentence,to probe into the position selecting rules in generation process of the verb-result,to put forword the calculation formula of the argument of the verb-result,to point out that the original position of the object of the BA has three:the first is behind the VP,the second is between V and P,the third is in the attribute position of noun after VP.