ask sb to （do） sth 应该用do吗?动词原型

ask sb to （do） sth 应该用do吗?动词原型 ask sb to do sth. ask sb to do sth ask sb do sth 还是 ask sb to do sth . ask sb do sth和ask sb to do sth 请教see sb.do sth.这个动词do一定要用原型吗? ask to do sth ask（sb）for sth ask sb about sth 这三个 造句 用（ask sb.to do sth.）造句 ask sb do/to do sth ask sb to do sth和ask sb doing sth ask sb do sth 、ask sb doing sth还是ask sb to do sth ask sb do sth