1 . cannot but
As a foreigner , I cannot but be proud of your historic achievement ., 作為一個外國人 , 我不能不以你的歷史成就而驕傲;
2 . cannotbut
cannot 白細胞, cannotbut 不能不, cannotbearto 不勝
3 . can not but
but for倘沒有,要不是can not but①不得不②不能不,不禁要butchern.①肉商,肉販②屠夫; 肉店;vt.①屠宰(動物)②殘殺(人).
4 . could not help but
Talking about Peanuts , I could not help but cast my mind back twenty years earlier ., 說起落花生 , 我不能不回憶到二十年前去.