I am in here为什么here前面可以加介词in?

I am in here为什么here前面可以加介词in? I am in here .Im in here where are you .Im here fool.I am in here .Im in here where are you .Im here fool. I am very glad to be here.here前为什么加be,而I have many friends here.却没有加'be'. I'll be here ,here 前为什么加be I AM HERE怎么样 i am here ,as here i am中文歌词 i am here是什么意思 I am new here I am here i am here I am here now why am i here? I am here,forever. I am here withs i am in here和i am here的语法有什么差别 I am here和I am in here有什么区别? I am leaving here in three days.英语翻译