【正确答案】正确答案：There are two levels of syntactic structure. The one formed by the XP rule in accordance with the head"s sub-categorization properties, is called deep structure. The other one, corresponding to the final syntactic form of the sentence which results from appropriate transformations, is called surface structure. The organization of the syntactic component of the grammar can be depicted below; The XP Rule ↓ DEEP STRUCTURE←(Sub-categorization restricts choices of complements) ↓ Transformations ↓ SURFACE STRUCTURE For example; Would you come tomorrow? Deep structure;Surface structure;

【答案解析】解析：(考查句法学中的表层结构与深层结构)