howareyoudoing?和howhaveyoubeen?各?
how are you doing?和how have you been?各是什么意思?
How are you doing和How have you been都是询问近况如何的，一定要说区别的话，前者更侧重工作学习生活方面，而后者侧重身体状况。但通常不做这样的区分。