didn't的过去式

didn't的过去式 “didn't” 的过去式是什么? didn't后面动词用原形还是过去式?句子中的didn't后面的动词用原形还是用过去式? did后面的动词要加过去式吗,那didn't呢还有don't呢,要加过去式吗 前面有didn't,后面的动词要不要变过去式?先说声谢谢了 t的过去式!带t的过去式 didn't 后面接动词原形 还是过去式 l didn't know what to say中didn't为什么用过去式 can't的过去式 can't的过去式 don't的过去式 英语：“used to do sth”的过去式是“didn't use to do sth”吗?不好意思啊，是否定式。 一般过去式第三人称单数形式否定句是加didn't还是does't? needn't的过去式是什么 isn’t的过去式是什么 didnt you的意思 didn't 和couldn't的区别, 划船、野炊的过去式英文还有：根据句意及首字母提示，补全句中单词：I didn't take money w_____ me today.