start on 和 start at 的区别,
问题描述：
start on 和 start at 的区别,
答
Start at强调在某一点开始,如I Start work at nine.而 Start on表示从某事开始,并且较常用,可以当固定用法如It is time you started on you homework.当然,Start on （at sb）about sth.还有别的意思,就是责备某人,抱怨某事,如She started on at me again about getting some new clothes.举例比较可靠,见牛津高阶（第六版）第1718-1719页.