Compared with English, the BA-Construction in Mandarin Chinese has been seen as a peculiar structure. The similar structure can hardly found in other languages either. Typically, the formation of a BA sentence is assumed in this work to be undergone a BA transformation, which moves the direct object to the sentence’s pre-verb position and is preceded by the inserted morpheme BA. This paper intends to compare Yune Ren Chao’s (1968) treatment on the structure with an approach developed in this work a theory based on the field of Government and Binding. This explanation describes the BA-Construction in terms of the module of Case Theory, and which appears to exhibit a somewhat better explanation for the BA-Construction.