not的过去式是don't吗

not的过去式是don't吗 don't的过去式 don't和not有什么区别?don't或not有过去式、未来式吗你 why didn't 可以改成why not 我知道why don't you =why not但题目是过去式,这样可以替换吗 not,don't的用法 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 not agree 和 don‘t agree 哪个是正确的 这里的handle为什么要加d 是过去式吗,如果是为什么这里用过去式. 谢谢、'If they don't witness disagreements and how they are handled in constructive ways, they are not well-equipped to go out into the world and address inevita 这个句子用过去分词还是过去式They don't have to find/found food by themselves.是用FIND还是FOUND1楼的,这里是do not （原题） 不是haven't no,not,don't差别我每次都弄不清楚这三个单字 no not don't is not跟don't是同样意思吗？ couldn't是过去式吗 求don't的现在分词和过去式.don't-_______-_______ don`t .和not.的区别 not 和don’t 的用法,说明 not to 和 don't 的区别 not和don`t有区别吗 英语过去式中加了be后面的动词还要改过去式吗例：I had a lot of work to do last Saturday ,so I _____( not go ) out at all.和Sorry ,I don't know.I _____(not notice)him leaving.怎么写?快快快速度啊！！帮帮忙！！！ can't是cannot 还是can not don't呢?