warn sb.against (doing)sth.

warn sb.against (doing)sth. 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. 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 about, 造句 warn sb.of sth造句 warn sb to do sth warn doing 区别 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? warn sb后跟to do 还是doing 请问有没有sb warn of sth warn sb of doing sth对吗? 有be against sb guard sb against造句 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 of sth的用法和需要注意的地方warn sb of sth的基础用法与warn sb about的区别有例句更好 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