couldn't help but do 什么意思啊seeing the old lady , i couldn't help but give up my seat to her.是指“禁不住做某事”还是“不得不做某事” 这个结构与 那个有do 无to那个怎么区分呢?谢谢

couldn't help but do 什么意思啊seeing the old lady , i couldn't help but give up my seat to her.是指“禁不住做某事”还是“不得不做某事” 这个结构与 那个有do 无to那个怎么区分呢?谢谢
couldn't help but do 什么意思啊
seeing the old lady , i couldn't help but give up my seat to her.
是指“禁不住做某事”还是“不得不做某事”
这个结构与 那个有do 无to那个怎么区分呢?谢谢

couldn't help but do 什么意思啊seeing the old lady , i couldn't help but give up my seat to her.是指“禁不住做某事”还是“不得不做某事” 这个结构与 那个有do 无to那个怎么区分呢?谢谢
不得不做某事”
禁不住做某事 是 can't help doing sth

I couldn't help but think this is what nations do when they have ambitions of global dominance.
我忍不住想大概一个国家有统治全球野心的时候就会这样。
can't help but do sth. ; 忍不住;不由得;不由自主;
有do 无to?
can't do XX...

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I couldn't help but think this is what nations do when they have ambitions of global dominance.
我忍不住想大概一个国家有统治全球野心的时候就会这样。
can't help but do sth. ; 忍不住;不由得;不由自主;
有do 无to?
can't do XXX, but to do XXX?
不能做, 而只能去做.....
不知道什么有do 无to?

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couldn't help doing sth,情不自禁做某事

忍不住把座位让给她了。