Hola Saravana That's an interesnting topic... LOS VERBOS REFLEXIVOS. Reflexive sentences are the sentences which the action of the verb affects the Subject In other words, the subject and the Direct complement are the same. First u have to undesrtand the reflexive pronouns: Yo = ME (myself) Tú = TE (yourself) Él/ Ella = SE (him/herself) Nosotros = NOS (ourselves) Vosotros => OS (yourself in plural) Ellos = SE (themselves) In general when the verb is in imperative, gerund or infinitive(as in your question) the reflexive pronoun goes after the verb. "(TÚ) deseas ponerTE los zapatos?" (would you like to put the shoes on by Yourself?) Here you can find more information about the reflexive pronouns: http://www.slideshare.net/aandradesster/los-verbos-reflexivos-195869