This time we are going to learn the suffix 上 and its formula.
This use of 上 is very important, because it can form a new verb or new meaning of the same verb. And then you will understand better the difference between an action verb and a verb to express completion or result in Chinese.
Formula of 上
a verb + 上 = the completion or result of this verb
登上山顶 reach the summit ≠ 登山 climb a mountain
be admitted to a college 考上大学 ≠ 考大学 take the university entrance examination
穿上大衣 put on a coat ≠ 穿大衣 putting on a coat
她爱上了他。She’s fallen in love with him ≠ 她爱他 she loves him/she is loving him
门锁上了 the door is/has been locked ≠ 锁门 to lock the door/locking the door
追上 catch up with ≠ 追 pursue, run after
You feel the difference of the meanings before and after 上 is used?
Check out Chinese verbs