18. ¿Mandas una tarjeta a tu amigo?
(Do you send a card to your friend?)
In the English sentence above, "a card" is the <em>direct object</em>, since it has no prepositions. However, "to your friend" is the <em>indirect object</em>, once it has the preposition "to", equivalent to "a" in Spanish.
A possible correct answer could be: "Sí, la mando para él."
<em>"La", as a direct object, retakes the feminine term "tarjeta" - card -, and "él", masculine 3rd person singular pronoun, retakes the term "amigo" - friend -, being placed as indirect object.</em>
19. ¿Haces la tarea para tu profesora?
(Do you do the homework for your teacher?)
In the English sentence above, "the homework" is the <em>direct object</em>, since it has no prepositions. However, "para tu pofesora" is the <em>indirect object</em>, once it has the preposition "for", equivalent to "para" in Spanish.
A possible correct answer could be: "Sí, la hago para ella."
<em>"La", as a direct object, retakes the feminine term "tarea" - homework -, and "ella", feminine 3rd person singular pronoun, retakes the term "profesora" - teacher -, being placed as indirect object.</em>