我经常看到有it don't matter ,有没有语法错误啊?和it doesn't matter 有什么区别啊?

我经常看到有it don't matter ,有没有语法错误啊?和it doesn't matter 有什么区别啊? I don't know nothing (anything) about this car?意思经常看到I don't know nothing about this car?这句话,为什么不说 I don't know anything about this car?这两种说法有什么区别?是肯定的说法还是否定的?也有这种说法It It don't make no difference的意思It don't make no difference 和 It makes no difference是一样的吗?因为我看到有人把It don't make no difference翻译成那于事无补. Dull coat,我司生产铝卷,以下是客户要求,I need the Dull coat I guess It is the finishing of the Aluminum coil,like the grey color but not bright,we say matte but I don´t know how do you call there. i don't think it have the best还是i don't think it has the best我是初二生,为什么我经常觉得好多动词,例如过去时一句话里有两个动词的就只有前面的写了动词过去时形式?,don't 后两个动词好像又是两个 matte 经常看到类似：I won't do it any more.I don't live here any longer....no more,no longer,not any more,not any longer 要用什么时态? i don't have it 和 i haven't it 有何区别?回答我没吃早饭用哪个？ 关于be这个词用法的一些问题我看到很多句子里be这个词经常单独出现,比如：These's always gonna [be] another mountain. I just wanna [be] with you. It's time to [be] a big girl now and big girls don't cry. [Be] w 经常看到有QS, Forget it,don't Don't forget it Don't touch it don't mansion it JUST DON'T IT Don`t mention it Don't do it Don't mention it.