Just use the Subject + verb + object + question words.

我不太懂你说的意思。你说的是疑问句的说法吗？ Subject + verb + object + question words. 主语 谓语 宾语 疑问词 例句：你是约翰吗？ e.g.Are you john?

To phrase a question in Mandarin is surprisingly easy. In English, you have to convert the order of the subject and verb, and very often you have to put in an extra “helping verb”, and after that you still have to conjugate the main verb. None of the above is involved in Mandarin. For a Y/N question: a. Simply put a “ma” at the end of the statement and raise the tone when you hit this “ma”. Therefore, “Are you John?” in Mandarin will be something like: “You are John ma?” b. Change the verb into the “V (or) not V” structure, and the intonation will stay the same as in a statement. It's like offering two options for the other person to choose. But one has to pay attention to his/her tone when using this structure or he/she will be considered impolite/impatient. E: “Are you John?” → M: “You are (or) not are John?” c. Simply say the statement with the tone raised at the end, which is the same in English. E: “You are John?” → M: “You are John?” For a wh- question: a. Keep the same word order as in the statement and replace the unknown part in a statement with a proper wh- word. This happens in English too. The difference is that it's not the most common way to ask a question in English but it is in Mandarin. E: “Who are you?” → M: “You are who?” b. If you want to show a higher level of your curiosity/confusion, you can go on and add a “ne” or “a” at the end (the latter shows strongest curiosity/confusion). E: “Who are you?” → M: “You are who ne?” or “You are who a?”

ni zhen mo la!