You had better go to see the doctor right now,反意疑问句用 wouldn't you 为什么?

You had better go to see the doctor right now,反意疑问句用 wouldn't you 为什么?
You had better go to see the doctor right now,反意疑问句
用 wouldn't you 为什么?

You had better go to see the doctor right now,反意疑问句用 wouldn't you 为什么?
You had better go to see the doctor right now,hadn't you?
That's because the word "had" can be used in a question sentence.