I couldn't help but cry.为什么后面不用不定式to cry呢?

I couldn't help but cry.为什么后面不用不定式to cry呢? i couldn't( help) having an argument with her为什么 Cry,not I want to,but couldn't help it如题 I couldn't help ____.A.to cry B.crying They go to bed early,but they don't always go to I want to know why didn't he reture the kook to I coulkn't hlep crying.为什么用crying 不用cry. 英语改错 “He couldn't help to cry when he heard the news” when_____you______(go) to USA?I didn't hear abou I didn't went to the gym yesterday.这句话错在哪 $(arraylist[i]) '$'是什么用法 I've got one camera,but I want(