be about to do 中about的词性
be about to do 中about的词性
be about to do 中about是什么词性?
be about to do
be about to do 的用法
be about to do sth的用法
be to do & be about to do的区别
be to do,be going to do,will do,be about to do的区别.
will \be doing to do \be about to do \be to do的区别
be about to do和be about doing 区别
be to do,be about to do,determine to do sth.的意思是什么
be about doing 和 be about to do的区别和用法!
英语翻译用be about to do sth when 的句式