who i was 与 who i am 这个两句话语法上有区别吗?

who i was 与 who i am 这个两句话语法上有区别吗? I am who I I am who i i am who i I am who I I am who i am who am i Who am I?是什么意思? who i am Who Am I To who am i歌词 who am I i am who is guess who am i i am who i am与who am i的区别 Who am I not important!I was just thinking I am not what I was请问“I am who I am. I just wanna to find sb ,no matter who i was ,who i am or the guy who i will