When are words joined

Question

I have noticed that sometimes a pronoun and a verb can be amalgamated to form a new word. For example, the words "creer" and "lo" become "creelo" in the phrase "Puedes creerlo." When is it proper to do this and when should it not be done.

Answer 1

HI Juardo, welcome to the forum

Have a look at our reference article on pronouns, you might find something interesting there

Answer 2

I didn't see the answer to your question in Heidita's article. The situations where the pronoun can be (optional except for imperative) appended to the verb form is:

• to the verb infinitive
• to the Spanish gerundio (English present participle)
• to an affirmative command

Quise decírselo. (I wanted to tell you.)

Voy apendiéndolo. I am learning it. (present progressive with IR)

Hazlo. Do it.