warn sb to do sth warn doing 区别

warn sb to do sth warn doing 区别 warn sb后跟to do 还是doing warn sb.against (doing)sth. 英语翻译是用warn sb.about sth.还是warn sb.not to do warn sb not to do warn sb against doing 可互换吗 英语小问题.warn sb to do sth and do sth还是warn sb to do sth and to warn sb of doing sth对吗? ask,tell,want,warn,sb（not） to do sth 用warn sb.not to do sth.造句 有warn sb to do sth 这个词组吗? 可以说warn sb. never to do sth. 嘛? warn sb.后是加 to do 还是加 doing 又有什么区别吗