It is found that the noun frequency correlates with preposition frequency, that the prepositions in nominalization are used in various ways, and that the prepositions tend to express metaphoric or abstract meanings.

• 研究发现，名词频率与介词频率相关，介词在名词化句型里用法多样化，名词化句型里的介词更倾向于表达隐喻/抽象意义。