I thnik that it would be benefit you if you improved your IT skillls.这句是虚拟语气吗?

问题描述:

I thnik that it would be benefit you if you improved your IT skillls.这句是虚拟语气吗?
这句句子的虚拟语气结构是啥?improved为什么要用过去式呢

主句用 would 从句用 过去式
i would buy a car if i had a million dollars.