I don't know可以说成don't know吗?在语法上正确吗?don't do sth和sb don't do sth如何区别?

I don't know 可以说成 i don't known 吗为什么 I don't know可以说成don't know吗?在语法上正确吗?don't do sth和sb don't do sth如何区别? I don't know what you say可以说成I don't know you say what吗 I don't know. “i don't know you know i don't know know,I,don't(连词成句) sorry,I don't know. i don`t know much I don't really know. 英语；I don't know I don't know miss I don't know him. I don't know now 翻译 i don't know So know,I don't I don't know her i don't know anything 可以说I don't feel good吗?