This particle represents in Spanish one of the more complex grammatical elements for its variety of uses. Grammar books usually offer on this subject, reference analysis with general concepts of reflexivity, passivation, impersonality. In linguistic studies in recent years shows that the small grammatical form is a so-called clitics, these are unstressed grammatical forms that bind to another category. The forms I we you you you, it’s them, them, those are are clitics and as such, in addition to not use accents, should be mandatory next to the verb, proclitic position (left side) I saw, they called us, we given, the betrayed, sold them, they refused. O enclitic position (right side) this use is currently less used, appears more in the literary language: seeing, calling, sitting down, calling them shut. Usually they are called unstressed personal pronouns.

However from the perspective of clitics are simple information carriers redundant information that has the full pronoun (Wilson, 1985) I (me) going to San Jose, You (you) buy clothes She (is) well dressed. In these examples, the clitic me, you. They can be removed for being redundant information. In the theory of case grammar, developed by Walter Cook (1975), Charles Fillmore (1968) and other linguists sought to explain the relationships between states, processes and actions that occur in the conceptual world of humans and objects things specific facts or concepts that are involved in that universe. This brief summary presents the statements on the use of academic texts.