The Structure of question tags Structure of question tags: Positive statement negative question tag Negative statement positive question tag 陈述部分肯定式+疑问部分否定式； 陈述部分否定式+疑问部分肯定式。 This is the fact,isn't it? The news didn't mention anything about the car accident,did it?The Structure of question tags Structure of question tags: Positive statement + negative question tag Negative statement + positive question tag 陈述部分肯定式+疑问部分否定式 ； 陈述部分否定式+疑问部分肯定式 。 This is the fact, isn’t it? The news didn’t mention anything about the car accident, did it?