i'm with my sister Gina.为什么要加am呢?

i'm with my sister Gina.为什么要加am呢? I"m with my sister.为什么要加am I am with my sister I am a giel.MY sister is Gina.（合成一句话） Gina and I(i）are siste I am with my sister等于my sister and I'm leaving为什么要加am呢 I am a girl.My sister is Gina.合为一句话:___ ____and I ___sisters 连词成句：sister,photo,Gina,I,last,with,in,am,the 英语翻译I'm Kate,and my sister is Gina.I'm tidy,butGina is not.I “i am looking for my father with my sister” 是什么意思? 为什么i am wanna be with you要加am 这8个句子的中文 I'm Kate,and my sister is Gina.Ino