有keep up doing sth吗

一般 keep up 后面跟纯名词形式
不跟动词的ing形式
所以keep up doing sth,是一种错误的搭配.
朗文当代英语词典 中注明：
Do not say 'keep up doing something”.Say “keep doing something” or “keep on doing something”.意思是keep up doing sth是不正确的,应该用keep doing sth或keep on doing sth.
而keep doing sth和keep on doing sth 这两者的用法又有区别,在此就不细说了.

keep up有这个短语但是没keep up doing sth这种表达法
一般来说是keep doing sth和keep on doing sth

keep doing something 就可以了
keep on doing something 也可
keep up 不对