sing的过去式及造句
问题描述：
sing的过去式及造句
答
sing的过去式：sang
They sang and danced last Children's Day.
答
词形变化
形容词: singable
动词过去式: sang/sung
过去分词: sung
现在分词: singing
第三人称单数: sings
He sang a song for me in my birthday party.
答
过去式sang
例句：They sang the deeds of heroes.