《直说通略》是研究元代口语新素材。其中介词形态丰富,17个介词中,在、就、从、自、及为主要引进处所、时间的介词。“在”字短语,语法位置灵活,还兼具与“从”类似的功能;就用法单一,仅见表处所,语法位置固定,仅位于谓语动词前;从以引进处所功能为主;自主要用于表时间、处所、范围的起点;及兼具介词和连词的功能。 “Straightforward” is to study the new material of the Yuan Dynasty. Among them, the prepositions are rich in form, and among the 17 prepositions, prepositions of, on, from, and for the main introduction of quarters and time. “In ” phrase, grammatical position flexible, but also both with “from ” similar functions; on the use of a single, only see the table premises, the grammar position fixed, only in front of the predicate verb; ; Autonomously used in the table of time, place, the starting point of the range; and both prepositions and conjunctions function.