can't help doing sth.
can't stand doing sth
两个都表示“忍不住做某事”
如:
I can't help crying.
I can't stand cyring.我忍不住哭了。
bear表示“忍受经得起” ，bear to do sth，bear doing，或 bear that 从句
如:
He could not bear that his friends should laugh at him.他受不了朋友们竟也嘲笑他
I can't bear to see you like this.我不忍见你这样.
I don't feel very well.I can't bear （having) cats in the house.
类似的固定搭配:
Give up doing something放弃做某事 ，cannot help doing something忍不住做某事， insist on doingsomething 坚持做某事， be busy doing something 忙着做某事 ，Accustomed doing something习惯于做某事， keep on doing something继续做某事 ……
