HSK 1 · VERSION 2.0#21
Sentence-Final “le” for a New Situation
了（表示新情况或变化）
How it works
了 at the end of a sentence can show a new situation or change of state. It often means “now…,” “already…,” or “not anymore.”
The pattern
Subject + Predicate + 了
Example sentences
我饿了。
I am hungry now.
天气冷了。
The weather has become cold.
他不是学生了。
He is not a student anymore.
Usage note
This 了 is different from the completed-action 了. Here it shows change.