The momentum words involved in this study include the period of the movement of the action and the number of times the action occurs. It is well known that the posi-tional relation between the human object and the momentum word is asymmetrical. When the object is a general names, the momentum word can be placed before and after the object; When a person's qualifier phrase and personal pronoun, the momentum word can only be followed by the object. In addition to the time quantifier can be inserted between the general name and the other, no one can insert the word “的”. In order to explain this asymmetrical linguistic phenomenon, this paper makes a detailed analysis, which is summarized as follows:
First, the structure of “refers to the noun + momentum word ”from “verb + object + verb + momentum word” word structure center shift evolved, then the momentum term for small clause predicate complement, because of the object by the main clause predicate with, Momentum complement is carried by a small sentence， Therefore, its object is not restricted and restricted.
Second, the structure of the “numeral + noun persons” once the momentum term, is a adverbial VP, forming Frequency Phrase, said of bin said, the behavior of The Times, both structural relationships for the shape of the structure, so both between can't insert the word “的”.
Third, the “time quantifier + noun persons” structure, which can be divided into the structure and the structure of the structure according to the word “的”between the energy structure. A word that can be inserted into a word can be considered as a definite phrase. The verb is placed under the dynamic name phrase GP, so the time quantifier is in the attributive position.
Fourth, momentum term both adverbial VP, or GP in the attributive, such as V displacement after a merger with light verbs, VP and GP only within the “momentum + noun persons”, the biggest projection for the DP, because of the noun phrases in DP, can choose a numeral phrase determiner to do their own complement; Number words phrase choose a quantifier phrase to do their own complement; Quantifier phrases choose a noun phrase to do their own complement. According to the qualified words group, the pronoun can only be used as a c-command quantifier phrase (NumP), while quantifier phrases cannot be c-command pronouns, so the momentum words cannot be preceded by pronouns.