2,说出下列动词过去式 am is are are do do live
动词be (is, am, are) 的过去式 原形 过去式 am was is was are were
不规则动词变过去式 am/is was buy bought feel felt grow grew put
module5——was(am,is的过去式) 是声音免费在线播放-喜马拉雅
图片内容是:am的过去式
动词的过去式. go take read do is.am are can buy get fee
am的过去式过去分词 eat的过去式过去分词
be动词(am/is/are)的一般现在时和一般过去时,请看下表
英语学习 新概念第一册第67,68课ppt 主语/时态 be动词的过去式 am
was is ,am 的过去式, 表示"是"