Abstract: From the grammatical form, “Lai NP” is the translocation formation “NP Lai”. But they have obvious difference. It mainly reflected on the pragmatic features of orientation, language elements, language communication, action attributes.The grammatical features of “Lai1” and “Lai2” includes the types of meaning, words collocation, the focus of emphasizing, action tense, context and so on. The semantic type can be divided into five categories: displacement, existential meaning, mutual meaning, possessive meaning, focus mark.“NP₁ Lai NP₂” sentence which can be divided into three types.

Key words: NP Lai, Lai NP, Distinguishing Feature, Grammatical Feature, NP₁ Lai NP₂