“一直在”除了have been doing外可以用be always doing吗?

be always doing与have always been doing的区别 存在have been doing、have being doing、和have be doing吗? 请问would be doing 和have been doing 有什么区别 两个的意思貌似都是过去一直在做某事啊 be always doing 还是always doing be always doing sth . be always doing 造句 have been doing sth So what else have you been doing?你一直在做什么?是这样翻译么? 翻译,我从二十二岁开始就一直在教书(have been doing)我的同学汤姆说过物理很难理解（be hard to. BE BEING DOING/BE BEING DONE/HAVE BEEN DONE have been done；have been doing;have been n(如friends);have be be said to be doing和be said to have been doing的区别