禁不住

... by the day：（指工作报酬等）按日计算 cannot but：不得不，禁不住 come forward：自告奋勇，提出供讨论 ...

 不会不

... but for除…以外，倘没有，除非 cannot but不得不，不会不 by oneself顺便地；在途中，在路上 ...

 不能不

cannot but (后接动词原形) 不得不；不禁要；不能不；不会不。例如：

We cannot but laugh.

我们不禁大笑起来.

I cannot but agree to your decision.

我不得不同意你的决定.

The caves cannot but inspire wonder in the beholder.

这些洞穴让观者无不叹为观止。

He cannot but move to another street, because his building has to be pulled down soon.

他不得不搬迁到另一条街上去, 因为他住的大楼很快就要被推倒.

It was a rash thing to do, yet one cannot but admire her courage.

这事做得过于鲁莽, 然而不能不佩服她的勇气.

One cannot but admire her even if one may not like her.

你即使不喜欢她也只得佩服她.

But this worlds be inconsistency, have heaven cannot but have hell.

但这个世界是矛盾的, 有天堂就有地狱.

I cannot but laugh to hear such a story.

听到这样的故事,我禁不住发笑.

Said loves you, actually cannot but give up for you you!

说爱你, 却不能为你而把你放弃!

You cannot but be in the right place the right time.

你所置身的时代与地域,对你都是恰如其份.

As to your extraordinary Code of Laws, cannot but laugh.

至于你的特别法典, 我只能一笑置之.

We cannot but claim on you for the recovery of the loss.

我们不得不向你索赔以赔偿损失.

I cannot but take care of the pump.

我不得不看管水泵.

I cannot but decline his offer.

我不得不拒绝他的提议.

They cannot but do so.

他们不得不这样做.

cannot help，cannot but，cannot help but

这些词组均表示“不得不，不禁”之意。

cannot help与动名词连用，表示“不得不”是口语用法，词组中的help相当于avoid或prevent，是一种比较好的用法。

cannot but后跟不定式连用，是一种较正式的用法，主要用于美国英语。

cannot help but跟动词不定式连用，是cannot but与cannot help的混用，系书面用语，多用于美国英语。由于cannot help but含有双重否定，所以有人反对使用，认为不合习惯，但此表达法已经沿用下来。