I don't know why It doesn't even matter,how hard you try

I don't know why It doesn't even matter,how hard you try
I don't know why It doesn't even matter,how hard you try

I don't know why It doesn't even matter,how hard you try
我不知道为什么连这都不起作用.要知道你（为这事）付出了多大的努力啊!
matter是“事关紧要”,“要紧”,“有重大影响”的意思.