1、单数：I、me、my、mine,例如：Icomefrom.https://www.yebaike.com/youandme.https://www.yebaike.com/mynameis...

it`smine;

2、复数：We、Us、our、ours,例如：weareworksof.https://www.yebaike.com/neitherofusforgotaboutit/ourvictory/differentours.