为什么很多外国人唱的歌名叫she don't know,而不是she doesn't know,这样语法不就错了吗?

为什么很多外国人唱的歌名叫she don't know,而不是she doesn't know,这样语法不就错了吗? She doesn't know ( ) she don't know my name NELLY的歌 为什么是don't 而不是doesnt She Don'T Know 歌词 I don't know how she is now.为什么是how she is 而不是how is she呢? I don't know French,she doesn't know French ,either .(改为同义句） she后面什么时候加does什么时候用do?例如she don't know,she doesn't know 为什么?I don"t know her.后面有用her,而不是she呢? 英语问题she doesn't know ( ) it doesn't matter__you don't know him well为什么用if而不是that I know why she doesn't 是对的吗 she doesn't know what's happiness还是she doesn't know what hap