warn sb. against sth 与 warn sb. for sth 用法有什么区别?主要是sth.的区别.

warn sb.against (doing)sth. warn sb. against sth 与 warn sb. for sth 用法有什么区别?主要是sth.的区别. warn sb.of sth. warn sb.of sth造句 warn sb to do sth warn doing 区别 请问有没有sb warn of sth warn sb of doing sth对吗? 造两个英语句子原句中的（或doing sth）是换哪一部分?Eg里面的怎样使用warn sb against sth 做句子? 有warn sb about sth 么,它与warn sb of sth 有区别么? 有warn sb about sth 么,它与warn sb of sth 有区别么? warn sb not to do warn sb against doing 可互换吗 一句话辨别近义词,要求言简意赅,抄词典的免了.warn sb.of,warn sb.against warn sb. about sth.与warn sb. of sth.的区别他们等于warn sb. sth.吗若不等于他们的区别与用法 warn sb.about sth.与warn sb.of sth.的区别他们等于warn sb.sth.吗若不等于他们的区别与用法 有warn sb to do sth 这个词组吗? 用warn sb.not to do sth.造句如题 warn sb of sth.,go up 怎么造句?各两句, 问warn sb.of sth.的详细用法,与warn sb about sth的区别,有例句warn sb of sth 的用法和注意点,与warn sb about sth的区别,有例句更好!