(also somebody can’t help but do something) used to say that someone is unable to change their behaviour or feelings, or to prevent themselves from doing something 某人忍不住做某事,某人不能停止做某事
She couldn’t help it if she was being irrational.
她不理智的时候自己也无法控制。
‘Stop biting your nails.’ ‘I can’t help it.’
“别咬指甲啦。”“我忍不住。”
I can’t help the way I feel about you.
我无法抑制对你的感情。
Lee could not help but agree with her.
李只得同意了她。
somebody can’t help feeling/thinking/wondering etc something
I can’t help feeling that there has been a mistake.
我总觉得什么地方出了错。
I couldn’t help thinking about the past.
我不禁回想起过去。
Examples from the Corpus
can’t help it• I tried not to cry but I just couldn't help it.• "Stop walking up and down like that!" "I can't help it - I'm really nervous."• He can't help it if they didn't understand what he was telling them to do.
→ somebody can’t help (doing) somethingat help1(2)