directional, noun, verb, adverb, punctuation, place word, particle, time word, conjunction, modal particle, idiom, pronoun, adjective, preposition · noun suffix indicating position on or above

放在桌子上的那叠文件是今天下午会议要用的资料。

verb, directional, noun, adjective, numeral, punctuation, measure word, pronoun, particle, modal particle · directional complement indicating upward movement or completion

邻居家的猫敏捷地爬上了屋顶。

directional, verb, time word · previous or first of multiple parts

上个星期我去看了电影。

verb, adjective · to attend class, school, or university

他已经开始上大学了。

verb, directional · to appear in media such as television, radio, or stage performances.

那位年轻的歌手去年终于上了春晚的舞台进行表演。

verb, directional, adverb, particle, noun · to board a vehicle such as a bus, train, or ship

她提着厚重的行李箱，吃力地上了火车。

verb, directional, particle · to move upwards onto or to a higher place, such as a hill, tree, or roof.

蚕已经上山结茧了。

verb, pronoun, noun · to fasten, install, or put something onto an object or surface, such as putting a lock on a door.

上这么多锁干嘛？

verb · Used in the term for the rising tone (shǎngshēng) in Chinese phonology

在学习中国古代音韵学时，需要区分平、上、去、入。

noun, verb · highest; superior; first in order or rank (often used in official titles in historical contexts).

蔺相如被封为上卿。

verb, directional · of the highest quality, grade, or rank; superior

这种产品的质量可以分为上、中、下三等。

noun, directional · in religious or philosophical contexts, referring to heaven, God, or divine destiny.

冥冥之中，上自有公论。

verb, directional · to wind up a spring-driven mechanism, such as a clock or a toy

给表上发条。

verb · to submit or present (a memorial, report, etc.) to a superior

他给朝廷上了一道奏疏。

verb · to serve food or drinks to a table in a restaurant or at a meal

服务员，请给我们上菜。

directional · used after a noun or noun phrase to indicate a certain aspect, scope, or field

他在学术上取得了巨大的成就。

directional · noun suffix indicating a specific aspect, scope, or field

他在学习上非常刻苦。