be going to do和be doing的区别,急,我在妹妹的书上看到一条 be doing 可以表示按计划要进行的动作,一时分不清它和be going to do的区别,请指教．be doing表示现在进行时我也知道，关键是是否可以表示

be to do和be going to do的区别 be going to do sth be going to do 后跟 be to do,be going to do,will do,be about to do的区别. be going to do和be doing和want to do 三者之间的区别 be about to do 和be going to do的区别? be to do sth 和be going to do的区别 BE TO DO 和BE GOING TO DO 有什么区别 be going to do 和will do和 be doing都能表将来吗? be doing和be going to do和 be about to do no matter what和whatever尽量详细点 系动词短语有 be to do和be going to be to do是情态动词短语吗 be going to和will do和be about to do和be to do和be doing都表示将来,有什么区别.怎么用 be to do.be going to do.be doing.will do.有什么区别? be going to do/be doing/will do/be to do等 的区别~ 英语be going to do还是doing 用be going to do造句 be going to do结构的用法 be going to do 的被动语态