Causative constructions present an action as the result of another will, permission, or intervention. A subject does not perform the main action, but Provokes that another person does it, lets it happen, or commissions it. Therefore, in phrases like I had the car repaired or The teacher let the students go out, the central idea is not the final action, but the relationship between the one who causes and the one who acts. In Spanish, these structures serve to organize that relationship clearly and naturally.

The most direct form is to make + infinitive. The causative subject goes before the verb and the caused action appears in the infinitive: subject + to make + infinitive. Thus, María hizo venir a Juan expresses that María prompted Juan's arrival. The main verb provides the cause and the infinitive names the action carried out by another person. When the causer is plural or singular, the agreement follows the form of to make, as in Sujeto-Verbo Concordance.

Basic structure with direct cause

Idea
With to make + infinitive, the subject causes another person to perform the action in a direct and clear manner.
The person who executes the action appears as a complement with a when it is mentioned explicitly.
The infinitive preserves its base form and does not change to agree with the causer.

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To let + infinitive expresses permission or lack of obstacle. The subject does not actively provoke the action, but does not prevent it: subject + to let + infinitive. We were allowed to enter indicates that someone allowed the entry; I let the child sleep indicates that I did not interrupt their sleep. Compared to to make, here the relation is more passive: the action occurs because the causer makes way, not because they force it.

Permission and absence of impediment

Idea
With dejar + infinitivo, the subject permits the action to occur or avoids hindering it.
The construction often expresses an attitude of permission, tolerance, or renunciation to intervene.
If it mentions who performs the action, it may appear with a after the infinitive.

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The clitic pronouns are placed before to make or to let when there is a conjugated verb: Me hizo salir, Nos dejaron pasar. If there is no conjugated verb in front and the infinitive bears the main weight, the pronoun can join the infinitive: Hacerme salir is not the normal form with a conjugated verb, but hacer salirnos appears when the infinitive functions as the base of the verbal group. In practice, the clearest and most frequent position is clitic pronoun + to make or to let.\n.

Placement of pronouns with causatives

Idea
Unstressed pronouns go before hacer or dejar when the verb form is not in the infinitive.
When hacer or dejar are in the infinitive, the pronouns can attach to the infinitive.
With two pronouns, both are placed together in the same position and keep their normal order.

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Sometimes the person who causes the action and the person who performs it are different, and that is expressed explicitly: The director made the lawyer sign the contract. Other times the causer and the agent coincide, as in Me hice cortar el pelo, where the same person provokes the action and receives it. When you want to highlight the person who executes the action, you often add a + person. The word order helps decide what role each participant has, as in Word Order.

With to make that + subjunctive the cause is more indirect and the result less controlled: subject + to make that + clause in subjunctive. The noise made the children wake up presents an effect, not a directly ordered action. This structure is used when the speaker views the result as a consequence, not as an instruction. The subjunctive appears because the subordinate action depends on the will, effect, or influence of another element, as studied in Mood Subjunctive.

Indirect causative with subjunctive

Idea
With hacer que + subjuntivo, the cause is presented as less direct or more mediated.
Used when the result depends on another will, reaction, or not fully controlled consequence.
The verb in the subordinate clause appears in the subjunctive because the action is a desired, provoked, or not certain consequence.

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To order, to command and to ask function as influence verbs. With a clear order, they usually go with the infinitive: He ordered cleaning the table. When you want to focus the instruction as independent content, that + subjunctive appears: He ordered that the table be cleaned. To ask also alternates in the same way, but with a softer nuance: He asked to leave or He asked that she leave. The choice depends on whether the action is presented as a direct task or as a separate message.

Mandating verbs with two schemes

Usage	Explanation
Direct order	Used when the speaker gives the instruction immediately and the verb normally appears in the infinitive.
Request with a subordinate clause	Used when you want to sound softer or more formal and the action is introduced with que and a conjugated verb.
Administrative mandate	Used in institutional contexts to express a precise order without much discussion.

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The construction with se allows talking about an action commanded or carried out without naming who caused it. In Se hizo arreglar la puerta, the important thing is that the repair happened, not who organized it. This structure appears a lot in news, instructions, and general descriptions. The focus falls on the done act, and the responsibility is hidden or not necessary. The usual sequence is se + past-tense verb + infinitive.

Impersonal construction with se

Idea
Con se hizo + infinitivo, an action is assigned or carried out without naming the responsible party.
The construction allows focusing on the action rather than the person who performs it.
Commonly used in formal texts, announcements, and news when the agent is not of interest or not mentioned.

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Negation and questions do not change the causative skeleton. No me dejaron entrar keeps the same relationship as an affirmative, only with negation in front of the conjugated verb. In questions, the basic structure remains intact: ¿Te hicieron esperar?, ¿Le vas a pedir que venga? The causative verb maintains its central position and the infinitive or the clause with that follow in the same place. The interrogative or negative form changes the intention, not the construction.

Use of negation and questions in causatives

Idea
Negation is placed in front of the causative form without changing the sentence's basic pattern.
In questions, the causative structure maintains the usual order and only changes intonation or the question mark.
If there are pronouns, they stay in the same position even if the sentence is negative or interrogative.

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