Based on the interaction between construction and causative words, this paper explains the reasons for the diversity of causative words in the construction of causative words. This paper refers to Goldberg’s construction diagram and summarizes the interaction schema between the causative construction argument and the actor role of causative words. In this paper, relevant examples are used to explain the principle of the integration of the constructional elements of causative words and the roles of participants in causative words. On the basis of the fusion principle, this paper analyzes how the causative construction chooses and limits the actor role of causative words. This paper also makes a detailed summary of the fusion law between the causative constructors and the participants of causative words.

The pattern of the “bie(别)+V+le(了)” structure is divided into three types: ① “object+bie(别)+V+le(了)” ② “bie(别)+V+object+le(了)” ③ “bie(别)+V+le(了)+object”. These are based on the position of the objects. First, in terms of the negation focus, in pattern ①, the negative focus is the “verb”. In pattern ②, the negative focus is the “object” and in pattern ③, the negative focus is the “whole event”. Second, in terms of the intensity of the negation, pattern ① where the object is at the beginning of the sentence represents very strong negation. However, pattern ② is more to express a kind of dissuasion or proposal and pattern ③ functions as a reminder or acts as a modal marker. In addition, in the “bie(别)+V+le(了)” structure, the object is the definite object that the speaker and the listener know well, so they accept the modification of restrictive elements. Third, in pattern ③, only verbs with a meaning of [+removal] can be used in this pattern and the object should be an object that already exists because “le(了)” corresponds to “diao(掉)”.

“W si wo le” and “W si wo suanle” are two constructions commonly used in modern Chinese spoken language, and they all have a high degree of meaning. The two constructions can sometimes be used interchangeably, there will be some subtle differences in semantics after the switchover; but in some cases, the two are not interchangeable. According to the corpus survey, we found that “W si wo le” is much more commonly used than“W si wo suanle” . “W si wo suanle” as a new construction is used only in a specific context in spoken Chinese, “suanle”as an extremely important component of the construction “W si wo suanle” must affect the choice of the variable W, the meaning of this construction and the syntactic features of this construction. This paper intents to compare the similarities and differences of “W si wo le” and “W si wo suanle” on the use and characteristics of the variable W, the construction meaning and the syntactic features ,we also try to analyze and explain the causes of these differences.