when did you first与when did you start有什么区别

when did you first与when did you start有什么区别 when were you stading和when did you start有什么区别吗? when did you start to______? When did you start skating? When did you start out? when did you start your homework when did you start to learn english? when did you start （）(hiccup) 1.--- When did you start colleting stamps? 怎样回答When did you start school? when did you first play piano? when did you do和what did you do 区别