I was a genius.和I'm a genius.的区别是什么?有语法错误吗?

I was a genius.和I'm a genius.的区别是什么?有语法错误吗? 英语翻译例如：英文I'm a really important genius. 假如早知道我是个天才 IF I HAD KNOWN I WAS A GENIUS怎么样 这两句英语哪句正确?我是天才吗?Am I a genius do和Am I a genius哪个正确 小问题语法修改.if i m not a genius,that means i need to try hard.If i don't try hard,that means i m a idiot.if i m not a genius,it means i need to try hard.If i don't try hard,it means i m a idiot.哪句话好点,用it还是that? I'm a women 和I was a women哪个对? 改成定语从句：I am aware of thr reason.I am not a genius. i'm a freaking genius,and a crazy boy,plus a crap nerd…什么意思?我英语不是很好,看不懂啊! I was a teacher when I was I was stuck和I was I was a I was a I was a I was a 中文翻译 I'm not the man I was I'm a chinese 和 i'm chinese 的区别 I'm forgetting.I was forgot.I have been forgotten, 英语翻译If I were a boy againIf I were a boy again,I would practice perseverance oftener,and never give up a thing because it was hard or inconvenient.If we want light,we must conquer darkness.Perseverance can sometime equal genius in its result.