warn sb.后是加 to do 还是加 doing 又有什么区别吗

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warn sb.后是加 to do 还是加 doing 又有什么区别吗

to do sth
warn sb of sth 告诫某人某事
warn sb (not ) to do sth 告诫某人(别) 做什么
warn sb against doing sth 告诫某人别做什么
warn sb against sb / sth 告诫某人提防某人,某物
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应该是加doing sth

应使用warn sb. to do something,warn sb doing sth.是错误的,但可以warn sb. against doing sth.

warn sb not to do
warn sb of sth(doing sth)