because in spanish we use the adjetive verb the pronoun and ussually use with the placewith is link on; by example: nosotros (we) estamos(are) en la (in the) casa de fernando (fernando house´s) cause we can split and link at the same time the phrase with the prsent past of future, all the stuff in spanish have a drastic change by the way, the vocabullary in spanish is so long but easy, we have an straight rule; we put a name for each one thing, example; we say "casa" and "caza" we write different, it´s sound like the same sound but "casa" is house, "caza" is i´m hunt, so u can see the different form.
i was be usefull for u
Eisen