Then i heard them calling me from below 间或与介词连用)这时我听见他们从下面叫我。
On connetion and differences between verbs and prepositions 动词与介词的联系和区别
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。