Pg. 124-125: A direct object's the noun that generally follows & receives the action of the verb. The direct object's identified by asking whom or what about the verb; can either be an inanimate object or a person. When the direct object's a definite person(s), an a precedes the noun in Spanish. This is known as the personal a. However, the personal a is usually omitted after the verb tener. The personal a isn't used w/a direct object that's an unspecified/indefinite person. The prep. a followed by the definite article el contracts to form al. When the interrogative quién (es) requests info about the direct object, the personal a precedes it. The personal a is required before every specific human direct object in a series. Direct object pronouns are generally placed directly before the conjugated verb. If the sentence is negative, the direct object pronoun goes between no & the verb. 3rd person direct object pronouns agree in gender & number w/the nouns they replace. Direct object pronouns are commonly used in conversation when the object's established/known. When the conversation alternates b/w 1st & 2nd persons (me, us, you), remember to make the proper transitions. In constructions that use the infinitive, direct object pronouns may either precede the conjugated verb or be attached to the infinitive. In negative sentences, the direct object pronoun's placed b/w no & the conjugated verb, or is attached to the infinitive.