唯美风景高清照片:hear sb. do sth. 和 hear sb. doing sth. 怎么使用?

hear sb do sth 和 hear sb do sth 有什么区别？ hear sb do sth 和 hear sb doing sth 有什么区别? hear sb. do sth. 和 hear sb. doing sth. 怎么使用? 怎样区别hear sb. do sth与hear sb. to do sth的用法？ 是hear　sb to do sth 还是hear sb doing sth hear sb. do sth同hear sb. doing sth. 有什么不同 hear sb do sth 中 , do 是不是指要用原形啊?为什么,不是,举例 aught sb do sth.. take sb do sth help sb to do sth和help sb do sth请问什么意思