一句英语语法问题

问题描述:

一句英语语法问题
My brother had gotten the upper hand in their fight,but I was kept standing by if necessary.
这个be kept doing是什么语法……

不理解你的问题是什么意思.
固定的词组啊:keep doing sth.
kept是keep的过去是啊.
…… ……