Final answer:
In Spanish, the indirect object pronoun may be attached to the end of an infinitive or placed before a conjugated verb.
Step-by-step explanation:
When a conjugated verb is followed by an infinitive in Spanish, the indirect object pronoun (e.g., me, te, le, nos, os, les) can either be attached directly to the end of the infinitive as a suffix or it can be placed before the conjugated verb.
For example, both 'Quiero dártelo' (I want to give it to you) and 'Te quiero dar lo' are correct. The placement often depends on what feels more natural or clear in the sentence, though attaching the pronoun to the infinitive can be seen as more colloquial.