be to do和be about to do有什么区别?

be about to do和be about doing 区别 be about to do 和plan to 有什么区别 be to和be about to区别 be to do be about to do 有什么区别 be to do & be about to do的区别 be about to do和mean to do和intend to do有什么区别 be to do,be going to do,will do,be about to do的区别. be about to do 和be going to do的区别? be to do和be about to do有什么区别? be to do sth.和be about to do sth.有什么区别? be doing和be going to do和 be about to do no matter what和whatever尽量详细点 will e doing to do e about to do e to do的区别 be about doing 和 be about to do的区别和用法! do/does和be about to 在一般将来时中的用法? 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 about to do sth的用法 be about to do用法,例句 be about to do怎么用