I might be going someday.请问GO为什么是ING形式

I might be going someday.请问GO为什么是ING形式 I must be going 为什么be后要接go的ing形式啊? Everything is going well.请问这里go well为什么用going 现在分词的形式?是be go I would take a long walk before going to bed.为什么go要用ing形式? I konw you are arriving next Sunday 为什么用ING形式,将来时不是BE GOING 为什么with time going by 中的go要用ing形式 She 's going camping中,为什么 go和camp都用了ing 形式?是固定搭配吗? Someday I will be able to let it go i'm not going to her house on friday night going为什么用ing 形式啊 will,be going to,be+动词ing形式的区别 I am going to go swimming tomorrow.swim为什么加ing I love going on trips!如何翻译,为什么go后要加ing?