Preposition / Postposition Signpost
What relation does this small word create?
含义
A separate word placed before or after a phrase to mark space, time, cause, purpose, possession, instrument, recipient, or other relation.
如何识别
Find small relational words such as in, on, to, from, with, for, of, before.
示例
in|on|at|to|from|with|for|of
in the room|to school|with a friend
I put the book on the table.
Visual guide
ADPOSITION = relation sign
I put the book [on the table].
↑
on links book/place
Other signs: in, to, with, for
Same relation, different coding: preposition: on the table postposition: table on case ending: table-PLACE particle/mixed systems Ask: before, after, or attached?
语言视角
用母语深入讲解
Mandarin uses coverb/preposition-like words such as 在, 给, 对, 从, 到, 把, 被 and localizers like 里, 上, 下 to encode many relations.
我在中国学习。
wǒ zài Zhōngguó xuéxí = I in China study
在所学语言中
英语大量使用介词来表示空间、时间、关系，以及动词后面需要接的固定搭配。
The keys are on the table.
on 表示 keys 和 table 的位置关系：钥匙在桌子上。
介词常让学习者困惑，因为很多用法不能只按字面意思推断，需要记搭配。
Same block, different coding
Both languages use this block strongly, but they signal it differently. Focus on form changes, not only meaning.