Question

下雨了 It's raining. (-It wasn't raining, but now it is)

Accepted Answer

Xià yǔ le. 了 (le) is often used as a particle that tells you an action is completed. However, here了 (le) is about indicating a change of state. In other words, there is now a new situation, or there is about to be a new situation. Source: https://resources.allsetlearning.com

Hanzi	下雨了
Pinyin	Xià yǔ le.
English	It's raining. _{(-It wasn't raining, but now it is)}
Notes	_{了 (le) is often used as a particle that tells you an action is completed. However, here了 (le) is about indicating a change of state. In other words, there is now a new situation, or there is about to be a new situation.} _{Source: https://resources.allsetlearning.com}

Le 下雨了 Xià Yǔ Raining 了 Particle Tells