eat的过去式,say的过去式

grammar精品课件(共18张ppt) (b) 不规则动词的过去分词 原形 过去式
动词过去式和过去分词 原形 am/ is are babysit bear beat become
动词的过去式和过去分词默写
动词的过去式构成的规则
过去式 have do sing see go eat drink take make had did sang saw