had arrived 和arrived的区别,并举例子,

楼主确定吗?真的是 had?还是说是have?
arrived 是 “一般过去式” e.g : He arrived Beijing three days ago.他三天到达了北京.
have arrived 是“现在完成时” e.g ：I have arrived here since three days ago.我自从三天前以来已经到达这里了.

现在完成时的主要用法是 have/has down（过去分词） 例如 have gone,have bought……
遇到yet,since 都用现在完成时.但注意有since要用延续性动词.例如have started要改成have been on