be about to 和be to 有什么区别?

be about to 和be to 有什么区别? be to和be about to区别 be about to do 和plan to 有什么区别 be about to do和be about doing 区别 be to be ,be going to be ,be about to be ,will be ,表示将要,有什么区别? be to do be about to do 有什么区别 be about to 与be to 有什么区别? be to do和be about to do有什么区别? be to 和be about to 有什么区别,用法个是什么. be to do sth.和be about to do sth.有什么区别? be about to和will的区别?有什么区别? will to be going to be about to do be to 有什么区别? be going to和be to和be about to的区别 be about to的用法和意思 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和mean to do和intend to do有什么区别 be going to,be to do,be about to do 有什么区别 be clear with,be clear to,be clear about和be clear of的区别.