Introduction
The Spanish subjunctive can feel tricky, especially after impersonal expressions. This article explains step by step when to use the subjunctive after impersonal phrases, how to form it, and common examples for everyday conversation. Clear rules, useful examples, and cultural notes will help English-speaking learners understand and start using this structure with confidence.
What are impersonal expressions?
Impersonal expressions are phrases that do not refer to a specific subject or person. They often begin with it is or there is in English, but in Spanish they use forms like es, hay, hace, or reflexive constructions such as es necesario and es importante. These expressions present an opinion, necessity, possibility, emotion, or judgment without naming who performs the action.
Common impersonal expressions that trigger the subjunctive
Many impersonal phrases, especially those that express subjectivity, require the subjunctive for the clause that follows. Learn these frequently used expressions:
es importante que, es necesario que, es posible que, es mejor que, es bueno que, es malo que, es lógico que, es probable que, es improbable que, es imposible que, es evidente que (note: typically uses indicative), hay que, hace falta que
When do you use the subjunctive after impersonal expressions?
Use the subjunctive after impersonal expressions when the expression conveys subjectivity, uncertainty, desire, necessity, emotion, or judgment rather than an objective fact. If the impersonal expression states a fact or certainty, use the indicative instead.
Rule 1: Subjective reactions and opinions
If the impersonal phrase expresses an opinion, emotion, or value judgment, follow it with the subjunctive. Example verbs and expressions include es bueno que, es malo que, es sorprendente que, and es raro que.
Examples:
Es bueno que estudies todos los días.
Es malo que no hagas ejercicio.
Rule 2: Necessity, obligation, and recommendations
If the impersonal expression conveys necessity, obligation, or recommendation, use the subjunctive. Typical expressions are es necesario que, es importante que, hace falta que, and hay que when the subject of the subordinate clause is different or implied.
Examples:
Es necesario que termines el informe antes del viernes.
Hace falta que la persona firme el contrato.
Rule 3: Possibility and doubt
When the impersonal phrase indicates doubt, uncertainty, or possibility, the subjunctive is required. Examples include es posible que and es probable que.
Examples:
Es posible que llueva mañana.
Es probable que ellos lleguen tarde.
Rule 4: Exceptions — expressions of fact
Not all impersonal expressions take the subjunctive. If the expression conveys a factual, objective statement, or something evident, use the indicative. Patterns include es cierto que, es verdad que, and es evidente que. These show certainty, so the indicative is appropriate.
Examples:
Es verdad que ella habla tres idiomas.
Es cierto que la reunión empieza a las nueve.
Grammar mechanics: how to form the subjunctive after impersonal expressions
Once you recognize that an impersonal expression requires the subjunctive, the next step is forming the correct tense. For present general use, the present subjunctive is most common. For past or hypotheticals, use the imperfect subjunctive. For completed actions expected before another action, use the present perfect subjunctive.
Forming the present subjunctive
To form the present subjunctive, start with the first person singular present indicative, drop the -o, and add the subjunctive endings.
AR verbs: -e, -es, -e, -emos, -éis, -en
ER/IR verbs: -a, -as, -a, -amos, -áis, -an
Examples with impersonal expressions:
Es importante que hables con tu jefe.
Es necesario que comas algo antes de salir.
Imperfect subjunctive for past situations
When the impersonal expression is in the past or when the action is hypothetical in the past, use the imperfect subjunctive. Form it by taking the third person plural preterite, dropping -ron, and adding the endings -ra, -ras, -ra, -ramos, -rais, -ran (or the -se endings).
Examples:
Fue importante que estudiaras para el examen.
No era necesario que vinieran tan temprano.
Present perfect subjunctive for completed actions
Use the present perfect subjunctive when the impersonal expression refers to actions that are expected to have been completed. Form it with haya, hayas, haya, hayamos, hayáis, hayan + past participle.
Examples:
Es bueno que ya hayas hecho la tarea.
Es posible que hayan terminado el proyecto.
Practical examples and translations
Seeing impersonal expressions in natural sentences helps cement the rule. Below are common impersonal phrases followed by example sentences and natural English translations. The first appearance of each main Spanish phrase is in strong text.
Es importante que
Es importante que practiques regularmente.
Translation: It is important that you practice regularly.
Es necesario que
Es necesario que resuelvan el problema hoy.
Translation: It is necessary that they solve the problem today.
Es posible que
Es posible que veamos un cambio de planes.
Translation: It is possible that we will see a change of plans.
Es bueno que / Es malo que
Es bueno que comas frutas y verduras.
Es malo que fumes tanto.
Translation: It is good that you eat fruits and vegetables. It is bad that you smoke so much.
Es probable que
Es probable que vengan en coche.
Translation: It is likely that they will come by car.
Hace falta que
Hace falta que traigas tu pasaporte.
Translation: It is necessary that you bring your passport.
Es evidente que (indicative)
Es evidente que hay problemas con el sistema.
Translation: It is evident that there are problems with the system.
Special cases and useful tips
Some impersonal expressions change meaning depending on whether they use subjunctive or indicative. Pay attention to context and the speaker’s attitude toward certainty.
Es que versus es que + subjunctive
Es que is often used to introduce an explanation and does not govern a subordinate clause requiring the subjunctive. The expression itself does not trigger subjunctive; instead, judge the clause that follows for subjectivity. Example: Es que no tengo tiempo. No subjunctive needed.
Hay que and tener que
Hay que is impersonal and usually followed by an infinitive, not a subjunctive clause: Hay que llegar temprano. Use the subjunctive after an expression like es necesario que when the clause has a different subject: Es necesario que tú llegues temprano.
Que with no change of subject
If the impersonal expression and the subordinate clause share the same implied subject, Spanish often uses the infinitive instead of the subjunctive. Example: Es importante estudiar todos los días. If you explicitly include a different subject, use the subjunctive: Es importante que él estudie todos los días.
Politeness and formality
Using impersonal expressions with the subjunctive is common in formal or polite requests. Es importante que llegue usted a tiempo sounds more formal and diplomatic than the direct imperative.
Cultural and usage notes
Impersonal expressions with the subjunctive are frequent in advice, news, rules, recommendations, and academic or official language. In casual speech, speakers may simplify structures, use infinitives, or rephrase. However, mastering the subjunctive after impersonal expressions helps learners sound natural in a wide range of situations, from conversations to formal writing.
Be mindful that native speakers sometimes drop the subjunctive in very informal speech, but in writing and formal contexts proper use is expected. Listening to news, podcasts, and formal announcements is a good way to hear these patterns in context.
Common mistakes to avoid
1. Using the indicative after subjective impersonal expressions. If you express wish, doubt, or necessity, choose the subjunctive.
2. Forgetting pronoun or subject agreement — if the subject differs, use que + subjunctive; if the subject is the same, use the infinitive.
3. Confusing hay que with es necesario que. Use hay que + infinitive for general necessity and es necesario que + subjunctive when specifying a subject.
Conclusion
Understanding when to use the subjunctive after impersonal expressions unlocks a crucial part of Spanish grammar. Remember the basic rule: subjective, doubtful, or necessary impersonal phrases take the subjunctive, while factual statements use the indicative. Practice recognizing the common expressions, learn the appropriate subjunctive forms, and listen to real Spanish to internalize natural usage.
