这句话中为什么has后还加个"been",现在完成时只是+动词过去分词.The aircraft has been redesigned 求教

这句话中为什么has后还加个been,现在完成时只是+动词过去分词.The aircraft has been redesigned 求教 This house has been built 200 years ago.请问这句话中‘‘has been built’’ 这句话中has been away是谓语,还是has?还是been?还是has been?还是away?he has been away from home for months It has been said that everyone lives by seeling something.这句话中为什么不用一般现在时.it has been said 这部分. It has been said that everyone lives by seeling something.这句话中为什么不用一般现在时it has been said 这部分 问一下这句话中为什么可以省略thatthe house i grew up in (that) has been taken down. He has always been a good neighbour.这句话中been该怎么翻译?起床开心! he has been away from home for months这句话中has been away做什么成分?什么是谓语动词? He has been to the Great Wall中为什么been My grandfather has been dead for many years.这句话为什么用has been的形式 死亡为什么是被动语态?还有My brother has never been abroad before.这句话为什么也用被动语态? students' grasp of what has been taught这句话 为什么what 前面要用OF This has not been easy because i own over a thousand books.这句话中been是什么用法 在这句话中losing是什么意思since his illness he has been very irritable,healways losing his temper.为什么是爱发脾气为什么要加ing 新概念英语2册51课第一句话.My friend,Hugh,has always been fat,but.请问这句话能否改成：1.My friend,Hugh,always has been fat,but.2.My friend,Hugh,has been always fat,but.为什么? 新概念英语2册51课第一句话.My friend,Hugh,has always been fat,but.请问这句话能否改成：1.My friend,Hugh,always has been fat,but.2.My friend,Hugh,has been always fat,but.为什么? they support the cables from which the bridge has been suspended.这句话中from是什么意思 在这句话中just的位置it just has been updated 请问jack has been busy _ his report.这句话中应该填什么