Questions with "le ma"
Asking questions about completed actions will involve using both 了 and 吗. These are simply added to the end of a sentence or statement. This means you might see questions with 了 and 吗 in different structures.
A general structure is:
Subject + Verb + Object + 了吗
Some examples:
- 你 去 了 吗?
- 你 吃饭 了 吗?
- 你 看 了 吗?
Another common structure is:
Object + Verb + 了吗
- 北京 去 了 吗?
- 饭 吃 了 吗?
- 电影 看 了 吗?
Notice that in this one the object is introduced first as a topic.
Finally, please notice that this pattern is nothing more than the combination of the Expressing completion with le pattern and the Yes - no questions with ma pattern.