cannot but V

phr

• ① 不能不,不得不;不禁;只得(=cannot help V-ing ...)
  • He could not but laugh [help laughing].他禁不住笑起来(★上句二式中,后者属口语用法;【美口】尚有两者混合的形式cannot help but V;【文】亦可用cannot choose but V)。