several times用什么替换比较好

several times用什么替换比较好 several times 用only a few times 替换可以吗/ several times前用什么时态 several times he什么(be)to　shanghai　several　times some times和several times有什么区别啊? I have seen her several times.和I saw her several times.什么区别 several times的意思 several times 译中 [急]请问several times和for several times的区别 he failed several times的several times是什么成分 怎样就several times提问