You had better see a doctor.(改为否定句)

问题描述:

You had better see a doctor.(改为否定句)
You had __ __ see a doctor.
说明出来理由.越多越好.要合理.合理+写得好 我会+100分滴

better not
had better 相当于情态动词,其否定形式是直接在后面加NOT,即had better not