start on 和 start at 的区别,

题目

start on 和 start at 的区别,

答案

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.