hear sb.doing sth.是神马意思?

hear sb.doing sth.是神马意思? hear sb doing sth 造句 是hear　sb to do sth 还是hear sb doing sth 是hear　sb to do sth 还是hear sb doing sth Hear sb to do sth 和 hear sb doing sth see/hear sb.doing sth.造句 用hear sb doing sth 造句 hear sb do sth 和 hear sb do sth 有什么区别?哪个是全过程的?是hear sb doing sth 和 hear sb do sth 有什么区别？ watch/see/hear+sb+do sth 和watch/see/hear+sb+doing sth hear sb do sth 和 hear sb doing sth 有什么区别? 恩 hear sb doing sth hear sb do sth 怎么造句啊 hear sb doing sth 与hear sb to do sth有什么区别 hear sb.do sth.和 hear sb.doing sth.怎么使用? see/hear/watch sb doing sth 这个语法对吗? see/hear sb.doing sth.造句（注中文） hear sb do sth和doing sth有什么区别有to do sth吗 hear 翻译为听说时还有hear sb. do sth..吗?我知道hear sb do sth 听见某人做某事 与hear sb doing sth 听见某人正在做某事，但我想问的是”听说某人干某事”是hear sb do sth 吗 Suddenly,we heard someone shouthelp!help这里为什么用hear sb do sth 而不用hear sb doing sth