Voted Best Answer
Jan 07, 2016 - 02:39 PM
If you embed a question that uses a question word instead of a statement, you can create a more complex kind of "confirming" 吗 (ma) question:
[Question-word Question] + 吗 ？
Examples of common question words include 什么 (shénme), 谁 (shéi), and 哪里 (nǎli).