题目内容：

would rather have done否定式怎样的?
答案是would rather not have done,
为什么不是would rather have not done.
这里的have done又不是to have done,不是非谓语动词.

优质解答

not必须直接跟在would后面表示否定：
I'd rather...
I'd rather not...
楼主可以把这种搭配与should来对照,就比较方便了.