So if you have 2 verbs in the sentence (conjugated and not) you have 2 options of how to write the DOP

Question

Quiero beber un refresco.

A.

B.

Voy a hacer la tarea.

A.

B

Quiero comprar unos zapatos.

A.

B.

Answer 1

If I understand your question correctly, the answer is yes! For example, in your sentence "Voy a hacer la tarea", the DOP is going to be "la" b/c "tarea" is singular and feminine, and you can either put it on its own before "Voy" or attach it to "hacer", so your options are "La voy a hacer" or "Voy a hacerla". You can attach it to the infinitive "hacer" or stick it by itself before the conjugated verb "voy". Hope that helps ¡Mucha suerte!

Answer 2

First, a DOP is a Direct Object Pronoun. Steps 1-find the direct object. 2) Decide its gender and number 3) choose which DOP to use. Lo, los, la, las 4) Put it in the right place. When there is an infinitive ( in Spanish, they end in -ar, -er, or -ir)

Quiero beber un refresco. (un refresco is the Direct Object, it is masculine and singular)

A. Quiero beberlo.

B. Lo quiero beber.

Voy a hacer la tarea. [La tarea is feminine(see the 'la' preceding it)singular, so use the DOP la]

A. on this one attach the 'la' to the end of the infinitive, hacer. -do not use the word 'tarea' since it has now been replaced.

B La voy a hacer.

Quiero comprar unos zapatos. (Unos zapatos is masculine and plural, so use 'LOS" to replace 'unos zapatos')

A.Quiero comprarlos.

B. Place 'los' before the conjugated verb, which is 'quiero' for this sentence. Do not put 'unos zapatos' in the sentence, since you just replaced it with 'los'.