（八）被动语态 2020/06/08 2020/06/22 （1）一般现在时的被动语态构成：is / am / are + 及物动词的过去分词。例如： Our classroom is cleaned every day. （2）一般过去时的被动语态构成：was / were + 及物动词的过去分词。例如： A new shop was built last year.
