prepositions of time
prepositions of place
prepositions of direction
prepositions of manner
A: Do you understand how to use these prepositions?
A：你知道如何使用这些介词吗？
B: Not really, they are quite confusing.
B：不太清楚，它们挺让人困惑的。
1) 语法中用于表示空间或时间关系的词
2) 语言学中的一种功能词
1. 介词
noun
1. Words used before a noun to show its relationship to another word in the sentence.