cannot help oneself 和cannot help but怎么用

cannot help (doing)不禁, 忍不住, 不得不

cannot help but 不能不, 不得不(I cannot help but be sorry. 我不能不感到遗憾。)

cannot help oneself 情不自禁; 不能自制

例句：
(Jane, dear, I can’t help feeling that you should stay.) Firstly, We can say can’t help doing sth or can’t help oneself doing sth. 此时意思是强调情不自禁做某事，for example, hearing at this story, I can’t help myself weeping. Secondly, we can say can’t help but do sth. It emphasizes on having to do sth. For example: I cannot help but be sorry. 我不能不感到遗憾。电影：简，亲爱的，我总是情不自禁的认为你应该留下来。

cannot help oneself 情 不 自 禁
I cannot help myself from visiting Baidu everyday.

cannot help but 别 无 他 法
I cannot help but letting him go.

不 加 。