can't help, can't bear, can't stand的用法

1、can't help
无法控制、忍不住做某事、不能停止做某事（can't help sth./can't help doing sth./can't help oneself）
I can't help it if she's late, can I?
I always get angry with him, I just can't help it.
I can't help thinking that we've made a big help hearing what you just said.
Sue doens't always mean to be so rude but sometimes she just can't help herself.

2、can't bear
忍受不了 （can't bear sth./can't bear to do sth., can't bear sb. doing sth.）
Oh, I can't bear that man---he really irritates me!
I just can't bear that kind of selfishness.
He can't bear people smoking while he's eating.
Please don't leave me all alone, I couldn't bear it.
Alison couldn't bear to leave and cried all the way to the ariport.

3、can't stand

通常用于口语：不能忍受（某人、某物、做某事）：
常用于can't stand sth./can't stand doing/can't stand to do/can't stand sb. doing sth.
I can't stand whiskey. 威士忌我受不了。
I'm so mad, I an hardly stand the sight of him. 我非常恼火，几乎一看见他就讨厌。
I can't stand to see good food going to waste.
Lily can't stand working in an office.
I can't stand people dropping litter.