Don't let me catch you doing that again.do为什么加ing呢?能不能不加呢.
问题描述：
Don't let me catch you doing that again.do为什么加ing呢?能不能不加呢.
答
.catch sb doing sth 抓到某人做某事. 固定用法吧
答
catch sb.doing sth.抓到某人做某事.固定用法,必须加ing,不能不加