是be against for sb/sth还是be against sb/sth?请陈述理由.

是be against for sb/sth还是be against sb/sth?请陈述理由. 有be against sb doing sth 么? 有be against sb doing sth 有be against sb to do sth词组吗? 英语：关于be opposite against sb./sth的意思： be sth for sb warn sb.against (doing)sth. 有be against sb compete against /eith sb.(in sth.) (for sth.) 造句 warn sb. against sth 与 warn sb. for sth 用法有什么区别?主要是sth.的区别. 是be interested in sth还是sb be greatful for sb to sth 还是 be greatful to sb for sth