cannot but不得不,不能不
例句;
I cannot but fear.
我不能不恐惧.
She cannot but laugh.
她不禁笑起来了.
He cannot choose but stay on.
他没法只好待下去.
But they cannot do it alone.
虽然如此,他们仍然需要社会的支持和协助.
I cannot but admire her courage.
我不得不佩服她的勇气