不得不 到底是could not but还是 could not help but

不得不 到底是could not but还是 could not help but 英语翻译到底是 but 还是but not? could not but后面是do还是to do来着 There's something I could not taste but I could feel!中文翻译是啥 I could do nothing but wait有时候看到的是 I could do nothing but waiting 到底哪个对 But ,I could not find her/him . Could not help but have to could not help but those who could not help but shed tears Nothing can not pass,but could not go home I searched everywhere but could not find him. pekingman could.things but animals can not 填空 but i could not cross the ocean of your i could not swim weel but i ___follow himdid do 英语翻译you could safely offer your friendliness but not friendship I should have gone with them,but I ___ my homework in time 一道英语语法题为什么答案是could not finish而不是could not have finished 或 might not have finished 或might not finish can not help but后面接什么When I told him the joke. He _____ a.could not help to laughing b.could not help to laughc.could not help but laughing d.could not help but laugh He looked hard at the blackboard but could not ____(see) the words clearly如何确定是否是过去式, but for some reason it could not be used then 这里的then是为了接下句吗还是怎么回事