1、不能不
而我渐行渐远，这不能不(Can not but)是个缺憾，
2、不得不
...can do with需要，希望得到；能对付，将就in the can[美俚]电影杀青can not but不得不 ...
3、可以不但
this file been deleted removed from the disk » 此文件已被删除从磁盘中删除 Can not but » 可以不但 opposition‘s baseline. » 反对派的基线。
can n not but不得不
can not help but禁不住;情不自禁地
Can not but love能不能不爱了;但可以不爱;但爱
Can not but so tacky能不能不这么俗气
Can Not Help But Do不得不做
Can not help but cry情不自禁流泪
CAN NOT BUT CARE ABOUT不得不在乎
But can not fight更不能打架