Pronoun Placement in Complex Constructions

In simple sentences, pronoun placement is straightforward: before a conjugated verb or attached to an infinitive, gerund, or affirmative command. But when sentences grow — compound tenses, modal chains, progressive periphrases, and stacked verb phrases — the rules become more nuanced. This page covers every major construction type and shows exactly where pronouns can and cannot go.

The golden rule

Object pronouns in Spanish must attach to one verb in the chain. They either go before the first conjugated verb or after the last non-finite form (infinitive or gerund). They never float in the middle of a verb chain, and they never follow a past participle in a compound tense.

Compound tenses: no choice

With haber + past participle, pronouns always go before the conjugated form of haber. Attaching them to the participle is not grammatical in modern Spanish.

In all of these, the pronoun cluster sits directly before haber. Forms like he díchoselo or había dádomelo are ungrammatical in all modern dialects.

Negative and interrogative compound tenses

Negation and question words go before the pronoun cluster, which still stays before haber:

Modal + infinitive: two positions

When a modal verb (poder, querer, deber, saber, necesitar, lograr) is followed by an infinitive, pronouns can go in either of two positions. Both are equally correct and equally common in Latin American Spanish.

Position 1: Before the modal

Position 2: Attached to the infinitive

Both positions mean the same thing

There is no difference in meaning between Se lo puedo decir and Puedo decírselo. The choice is stylistic. In casual speech, the pre-modal position tends to be slightly more common. In formal writing, the attached position is sometimes preferred.

Estar + gerund: two positions

The progressive construction estar + gerund follows the same two-position pattern as modals.

Before estar

Attached to the gerund

Accent rules for gerunds with attached pronouns

When attaching pronouns, the original stress of the gerund must be preserved. Since gerunds are stressed on the second-to-last syllable of the base form (diciéndo), adding one or two pronouns pushes that stress further from the end, always requiring a written accent:

Ir a + infinitive: two positions

The periphrastic future ir a + infinitive allows the same two placements. For more on this construction, see Ir a + infinitive.

Note that dárselo requires an accent on dar because the stress must stay on the original syllable.

Tener que + infinitive: two positions

The same pattern applies to all obligation periphrases: tener que, haber de, hay que (though hay que is impersonal and does not take indirect object pronouns referring to the speaker). See Tener que for more.

Modal + haber + participle: where it gets interesting

When a modal governs a perfect infinitive (haber + participle), the number of possible positions changes. The pronoun can go:

1. Before the modal (most common in speech)
2. Attached to haber (correct in formal writing)
3. Attached to the participle (archaic, avoid)

Stacked periphrases: first or last

When multiple auxiliary or semi-auxiliary verbs chain together, the rule simplifies: pronouns go either before the first conjugated verb or after the last non-finite form (infinitive or gerund). They do not go between verbs in the chain.

What about the middle?

Placing pronouns between verbs in the chain (va a tenérselo que decir or va a tener que decírselo) is sometimes heard in speech but is generally considered non-standard. Some speakers may place the pronoun before the last conjugated verb in the chain, but this varies by region and register.

Summary: pronoun position by construction type

Accent marks when attaching pronouns

Whenever you attach one or more pronouns to an infinitive, gerund, or (in rare archaic usage) a participle, check the stress. Spanish stress rules may require a written accent that the base form did not need:

The rule: mark the stress of the original word. Adding syllables after it never moves the stress — it only moves the accent mark into a position where Spanish spelling rules require it to be written.

Common errors

Error 1: Attaching to the participle in compound tenses

Error 2: Splitting the pronoun cluster

Error 3: Placing pronouns in the middle of a chain

Error 4: Forgetting the accent

Putting it all together

Here is a single scenario using multiple construction types, all with the pronoun cluster se lo:

Both versions are perfectly natural. Mix and match as the sentence flows best.

For the basics of pronoun order (which pronoun comes first), see Combined Pronoun Order. For pronoun placement with commands, see Combined Pronouns with Commands.