HSK 1 · VERSION 2.0#49
Asking Whether Something Has Happened with “le ma”
了吗
How it works
A sentence with 了 can be turned into a yes-no question by adding 吗 at the end.
The pattern
Statement + 了吗？
Example sentences
你吃饭了吗？
Have you eaten?
他下课了吗？
Has class finished?
你买书了吗？
Did you buy the book?
Usage note
This pattern is very common in spoken Chinese.