你没吃过月饼？
a plain statement said with a rising voice becomes a question
Structure
陈述句 + ？（语调上升）
What it means
Say an ordinary statement with your voice rising at the end and it becomes a yes/no question, with no 吗. It usually shows surprise or checks what you think you heard.
How it is built
Statement + rising voice (？ in writing): 你没吃过月饼？ (You’ve never had a mooncake?)
When to use it
With 吗 the question sounds neutral; without it, it sounds surprised, like English “You’re leaving tomorrow?”: 你明天就走？ Common in conversation.
Watch out
Let your voice clearly rise, or it sounds like a plain statement. For a calm, neutral question, add 吗: 你明天走吗？
Examples
你没吃过月饼？
You’ve never had a mooncake?
你明天就走？
You’re leaving tomorrow, already?
这些菜都是您自己做的？
You made all these dishes yourself?
Learn this in HSK 3 · Lesson 22: 嫦娥的传说 (The moon legend)
A dialogue, a reading, word cards with audio and a drill that uses it, in Learn Chinese with Bao. The first lessons of every level are free.
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