will(would)的用法.I would always by you side if you didn't leav

will(would)的用法.
I would always by you side if you didn't leave me.
这句话用虚拟语气来表达,我觉得有点问题,我觉得应该是:
I would be always by you side if you didn't leave me.
would 这个词应该不能直接作动词用,它后面应该接一个原形动词.我这么理解对吗?
上一句写错啦,应该是:
I would be always by your side if you didn't leave me.