英语被动语态八种时态

问题描述:

英语被动语态八种时态

被动语态的用法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 Our classroom is cleaned everyday.I am asked to study hard.Knives are used for cutting things.2.一般过去时的被动语态构成:w...