You had better go to the hospital.怎么变否定式?如果是let us to do sth.

You had better go to the hospital.怎么变否定式?
如果是let us to do sth.

You had better not go to the hospital.
如果是祈使句的话直接在前面加DON'T
如果是一般的句子在LET 前加助动词 加NOT
对了应该是 let us do sth 吧

You had better not go to the hospital.

You had better not go to the hospital.

better/us后+not