很多研究表明语言单位的使用频率对人们的认知表征(cognitive representations)起着很大的作用。其实一直以来语法研究所关注的都是出现频率高的现象。语言的使用频率包括例频(token frequency)和型频(type frequency)。例频是指某一构式中特定一例(一个具体的句子、词组,或一个词等,如“你好”)反复出现的频率;型频是指同一构式的不同实例出现的数量总和,如“主语+形容词”这个构式,你好“、”她漂亮“、”汉语难“等等这样的实例的数量就是 Many studies show that the frequency of use of language units plays a large role in people’s cognitive representations. In fact, grammar research has always been concerned about the phenomenon of high frequency. The frequency of use of the language includes the token frequency and the type frequency. An example frequency is the recurring frequency of a particular instance of a construct (a specific sentence, phrase, or phrase, such as ”hello“); the pattern frequency refers to the number of occurrences of different instances of the same pattern Sum, such as ”subject + adjective “ this structure, hello ”, “ she is pretty ”, “ Chinese difficult ”and so on the number of such instances is