why am I + 动原?句型对否?意思是不是 我为什么要...

why am I + 动原?句型对否?意思是不是 我为什么要... 你为什么不开心(译英)最好用“why don't sb+动原”句型. why am i here? why I am live? I am playing the guitar and the violin well.这句话对否 有be动词的英语句型变过去式是变be动词还是变be动词后面的动词（变为过去式）?请说明理由例如：I am doing my homewok.(原句）变过去式是I were doing my homework 还是I am did my homework什么时候变be动 Why I am a loser..why? why am i here why am i at Why am I so cute? why am I so celver? why i am so poor? Why I am so wise! why am I so love why i am so ugly Why I am so wise? why am i a peson? I am listening是什么简单句中的什么句型?是主语加谓语吗?还是主系表?be动词am在这里是助动词还是系动 I consider why I am where I am.翻译