be going to do 和be doing用法的区别?最好能举出例子～我说的是当两者都表将来时态时的差别！

be to do和be going to do的区别 be going to do sth be going to do 后跟 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 be和be going to do有什么区别?用英语说,要翻译…… 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 to do,be going to do,will do,be about to do的区别. 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 doing和be going to do的区别be doing和be going to do都表示将来但是二者的区别是什么?那一个更表示肯定? be going to be going 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