couldn't help but do 表示容易、方便做……；不能不……；不得不……；不禁……；情不自禁……；忍不住要……；立刻……；

The pistol was positioned where I couldn't help but see it...

手枪放在我抬眼就能看见的地方。

I couldn't help but notice the pointed remarks slung in my direction

我不能不注意到针对我的尖锐言辞。

We couldn't help but admire it.

对它我们不能不赞赏。

I couldn't help but wonder, what is this about?

我不禁思考这是怎么了？

I couldn't help but laugh out gently.

我不禁轻声笑了出来。

I couldn't help but stare, but it's her inner beauty that you really feel.

我情不自禁地盯着她看，不仅仅是外在的美，你能真真切切地感觉的她内在的美丽。

I couldn't help but see, pretty woman, that you look lovely as can be.

我真的舍不得不（忍不住要）瞧你啊，你看上去可爱得不能再可爱了！

It hurt so much that I couldn't help but cry out in pain.

球打得我好痛，我忍不住痛苦地大哭出来。

When he fell into the pond I couldn't help but burst out laughing.

他掉进池塘时，我情不自禁地大笑起来。

I had never seen my father cry, and when I heard this, I couldn't help but start to cry myself.

我从未看见我父亲哭过，当我听到这些的时候，我禁不住哭出声来。Arriving in Beijing, I couldn't help but notice the ads and signs

everywhere.

到了北京之后，我立刻就注意到了无处不在的广告与标志。

三、have no choice but to do和can't choose but do 与couldn't choose but do和can't choose but do something

have no choice but to do和can't choose but do 两种表达方式都没问题。只是语法现象不同。前者的but to do是不定式，做choice的定语，而后者的but do是与choose并列的谓语。

choice是名词，在句中做宾语，choose是动词，作谓语。

couldn't choose but do

can't choose but do something

强调“别无选择”，此时可以说与can’t help but 完全同义，如“我不能不感到遗憾”就可以用不同的手段表示——

I cannot choose but be sorry.（除了遗憾别无选择）

I cannot help but be sorry. （除了遗憾只能无可奈何）

小编寄语：学会了这个高级用法，在高考作文里嘚瑟一句，你就能轻松抓住阅卷老师那颗颤抖激动的心。