be about to do
be about to do
be to do & be about to do的区别
be to do be about to do 有什么区别
be about to do和be about doing 区别
be to do,be going to do,will do,be about to do的区别.
be about to do 的用法
"be anxious about /to do sth."
be about to do怎么用
be crazy about sth to do with
be about to do sth的用法
用be about to do做句子
be going to do、be about to do、be to do,这三者有什么区别?