ME(me) TE (you - informal) LO/LA(him, her, it, you - formal) NOS(us) OS(you all - informal) LOS/LAS (them, you all - formal)
First of all we must know that in a sentence a direct object noun is the person, event or thing that receives the action of the verb: Gilberto leeel libroGilberto readsthe book El libro (the book) receives the action of the verb lee (reads)
In Spanish, direct object pronounsreplacedirect object nouns to avoid unnecessarily repeating them: Gilberto lo lee Gilberto reads it
Roberto comió el arroz español Roberto lo comió
Roberto ate Spanish rice Roberto ate it
In English, the use of direct object pronouns is also frequent. In the sentence above, we replace the direct object Spanish rice with the pronoun it.
DIRECT OBJECT PRONOUN PLACEMENT The main difference in Spanish and English is the pronoun placement. In English, the pronoun is placed where the direct object noun was. In Spanish, the pronoun is placed: Before the conjugated verb Juliala alquila Julia rents it Gabriel los lee Gabriel reads them After infinitive verbs and -ndo forms: Julia va a alquilarla Julia is going to rent it Gabriel está leyéndolos* Gabriel is reading them
*When you attach the pronoun at the end of the -ndo form, an accent mark is needed. The accent goes on the vowel preceding -ndo.
Direct object pronouns agree in gender and number with the nouns they replace: LO → replaces masculine-singular nouns LOS → replaces masculine-plural nouns LA → replaces feminine-singular nouns LAS → replaces feminine-plural nouns