i don't know how与 i don't know why有什么区别?

i don't know how与 i don't know why有什么区别? I don't know how to i don't know how to how to play basketball?I don't know.who know? i don't know how i feel的中文 I don't know how can I ask questions? 英语翻译i don't think i know how.. I don't know.Do it how can i I don't know. I don't know how should I do ,与I don't know how I should do两句话哪个是正确的?I don't know how should I do ,与I don't know how I should do两句话哪个是正确的?这是关于语法的哪条规则呢? i don't know how to do it句型转换i don't know[ ][ ][ ]do. I don`t know how to have fun.(同义句） I don`t know how to have a good time.I don`t know how to()( I don t know how I should do it同意句I don t know how ____ ____ it 7.I don’t know.How do I use commas?（变成一个复合句） I don’t know I use commas.I don’t know怎么写? I don't know how I be,but I know somethings will be different. “i don't know you know i don't know How much I love you ,you don't know I really don't know how to explain this pnblem