learn的过去式,过去式和过去分词表

写出下列动词的过去式: go think be happen give become get rain
不规则动词表过去式与过去分词:初中2年级下册
pa let's learn 课件(共16
原形 have sit say sleep spell learn 过去式 had sat said slept
form),第三人称单数形式(singular form in third personal),过去式