不都是,要看动词的形式。 is\am\are +及物动词的过去分词用来表达一般现在时的被动语态。 例如She is liked by everybody. 容易混淆的是被动语态与系表结构,例如The composition is written with great care.这篇作文写得很用心。(过去分词written 是动词,表动作,表被动,被动语态。) The composition is well written.这篇作文是写得很好的。(过去分词written相当于形容词,表状态,系表结构。)