请问是:see sb.do sth.还是saw sb do sth

请问是:see sb.do sth.还是saw sb do sth see sb do sth see sb\sth do 请问是It upset sb to do sth还是It upsets sb to do sth? 是offer sb sth还是 offer sb to do sth? see sb.do sth.若用在过去式句中,do是动词原形还是应变为过去式saw? 有see sb do sth ,那么有saw sb did sth see sb do sth/watch sb do sth (各造一句) 造句：see sb do sth . award sb sth/sth to sb . return sb sth/st see sb.do sth和see sb.doing sth.区别 关于see sb do sth和see sb doing sth 请问：是keep sb. do sth.还是 keep sb doing sth.