If I had time,I would come to see you.

问题描述:

If I had time,I would come to see you.
能否倒装成Had I time,I would come to see you.也就是问在虚拟句中had必须为助动词才能倒装吗?如果解释为"有"时能倒吗?我已经问了好多次了.

必须做助动词时才能这样用,这个句子应该是Had I have time.