when sb.do sth.还是 when sb.doing sth.

when sb.do sth.还是 when sb.doing sth. 什么时候when sb do sth 可变成when doing sth when的结构,不是时间状语从句,不是现在完成时,是when sb do sth,还是when sb doing sth when sb doing sth,sb doing sth 这个句型可不可以? 用 Sb who do sth be like sb else doing sth else who,when/once when while and see sb doing sth tell sb doing sth还是tell sb to do sth hear sb doing sth.还是hear sb do sth. keep sb do sth 还是keep sb doing sth? take sb.doing sth.还是take sb.to do sth. notice sb do sth 还是 notice sb doing sth show sth.to do sb.还是show sth.do sb.还是show sth.doing sb.