have been to 与was sb at两者的区别v?

have been to 与was sb at两者的区别v? Tom was said to_Mary for 40 year A.have been married to 和某人结婚不是marry sb.为什么加to sb have been training sb have been trained 哪个对? have sb to do与 have sth to do 用法 用sb/sth is said to have done/to have been done 个造个句子 have been to 与have been 有什么不同 是否have been to 加名词 have been 加副词? have gone to 与 have been to ,have gone ,have been的区别是什么 so sb was 与 so was sb have been to与have gone to的区别 have meaning to sb have been to,has been to ,have been in ,与have gone to,has gone to 的区别和用法. have sb do sth 与have sb to do sth 的区别 have sb to do与have sb done两者表被动有何区别? have been to与have been in还有have gone to的区别 It is never too late to be what you might have been sb. They must have been to the USA,have not they?与He must have been to the USA,was not he?区别最好讲讲为什么句子主语一换,must反义疑问句就不一样了? 英文邮件中的input什么意思..收到邮件：Since sb have been seen him day to day,I'd like to have sb's input.. have not been to与have never been to都是词组吗?说说意思.