of的意思如题,还有：had been slapped 是什么语态

英语翻译这里的 Had 还有 been 被动语态be done中 be是什么词性?还有现在完成时的被动语态have been done 中have been是什 had been 的意思和用法? we have had been having a lot of rain recently 用的是什么时态 为什么这么 has been是被动语态吗?被动语态到底是什么?还有,英语时态好复杂,有没有简单的掌握方法? have/had + been/be的区别是什么? 关于Have和Had 还有Have been和Had been的区别 has been done,had been done 的区别是什么? had been 和 has/have been的区别是什么? had been 在这里的成分是?不会是完成时的被动语态吧? 下面句子为什么用的是被动语态was finished而不是过去完成时had been finished He has been to Dalian 的被动语态是什么?