i don t know和I didn't know的区别什么时候用don't,什么时候用didn't

i don t know和I didn't know的区别什么时候用don't,什么时候用didn't I didn’t know I don't know. I Didn't Know 歌词 I don't know what you said还是don't改didn't? -Hi,Mary. -Hi,Lucy. I ------- you are here. A.didn't know B.don't know “i don't know you know i don't know 改错:I didn't know him and I don't want . but i don't think you can smoke here.I didn't know this is a...为什么是didn't I know you love me,but I don't know how to face you,didn't know should accept you. 谁帮忙翻译一下诺拉琼斯的.Don't Know WhyNorah JonesI waited 'til I saw the sun I don't know why I didn't come I left you by the house of fun I don't know why I didn't come I don't know why I didn't come When I saw the break of day I wished I didn't know I was cheating. i don't think i konw和 i think i don't know哪个对 两个简单的英语语法问题,I don't know和I didn't know有什么区别额?第二个问题是,I don't like him为什么不能写成I'm not like him 语法一窍不通. I really don't know her和I don't really know her的区别 I don't know anything 和 I don't know nothing的区别 I don't realy know 和 I really don't know 有何区别 帮忙翻译一个句子：I don't know their names as I didn't know them personally.谢谢!