1) It doesn't affect me/matter to me.
这事与我不相干。
2) It has nothing to do with me.
这事与我无干。
3) This has nothing to do with you.
这与你不相干。
4) That' s beside the point.
那事与此不相干。
5) It' s no concern of mine, ie I am not involved in it or I have no responsibility for it.
这事与我无关.
6) I have no recollection of it.
我不记得这件事。
参考词条