Introduction
Learn simple Spanish rules for using infinitives after common verbs. This beginner-friendly guide explains when to use infinitives, shows clear examples, and gives practical tips you can apply in everyday conversation, signs, menus, and messages.
- What is an infinitive in Spanish?
- Basic reason: one verb + infinitive
- After prepositions: infinitive required
- Verbs that change meaning with infinitives
- Common beginner verbs that require an infinitive
- Special case: gustar and similar verbs
- Negation with infinitives
- Sequencing actions: after verbs of perception
- Common mistakes and how to avoid them
- Beginner practice exercises
- Practical tips for remembering infinitive usage
- Everyday realistic examples you will see or use
- Quick reference cheat sheet
- Conclusion
What is an infinitive in Spanish?
An infinitive is the base form of a verb, equivalent to English to + verb, like to eat or to sleep. In Spanish, infinitives end in -ar, -er, or -ir. These forms are used after many common verbs and expressions without conjugation when the action is not bound to a specific subject or tense.
comer – to eat
vivir – to live
hablar – to speak
Basic reason: one verb + infinitive
When one verb is followed directly by another verb, the second verb stays in the infinitive. This is similar to English patterns like want to eat or can speak. Use this structure after verbs that express desire, obligation, ability, permission, or intent.
querer + infinitive
poder + infinitive
deber + infinitive
Examples with querer (to want)
Quiero comprar pan.
Quiero comprar pan. – I want to buy bread.
Quiero aprender español.
Quiero aprender español. – I want to learn Spanish.
Examples with poder (can, to be able to)
Puedo ayudar ahora.
Puedo ayudar ahora. – I can help now.
Puedo hablar con usted.
Puedo hablar con usted. – I can speak with you.
Examples with deber (should, must)
Debo estudiar para el examen.
Debo estudiar para el examen. – I should study for the exam.
Debemos salir temprano.
Debemos salir temprano. – We must leave early.
After prepositions: infinitive required
After prepositions like para, sin, antes de, and después de, Spanish uses the infinitive, not a conjugated verb. This is a common difference from English that beginners should remember.
para + infinitive
sin + infinitive
antes de + infinitive
después de + infinitive
Practical examples with para and sin
Estudio para viajar.
Estudio para viajar. – I study to travel.
No salgas sin comer.
No salgas sin comer. – Don’t leave without eating.
Examples with antes de and después de
Lavarse las manos antes de comer.
Lavarse las manos antes de comer. – Wash your hands before eating.
Descansar después de trabajar.
Descansar después de trabajar. – Rest after working.
Verbs that change meaning with infinitives
Some verbs change meaning depending on whether they are followed by an infinitive or a different structure. For beginners, focus on the most common verbs that simply take an infinitive, but be aware of a few common shifts.
pensar + infinitive – to intend or plan
acabar de + infinitive – to have just done something
volver a + infinitive – to do again
Examples with pensar, acabar de, volver a
Pienso estudiar hoy.
Pienso estudiar hoy. – I intend to study today.
Acabo de llegar.
Acabo de llegar. – I just arrived.
Vuelvo a llamar más tarde.
Vuelvo a llamar más tarde. – I’ll call again later.
Common beginner verbs that require an infinitive
Memorize these frequently used verbs and practice simple sentences. All of these take an infinitive as the following verb.
querer – to want
necesitar – to need
poder – to be able to
deber – should, must
gustar – to like (special construction explained below)
ir a + infinitive – future with ir
tener que + infinitive – obligation
Examples for everyday contexts
Necesito agua.
Necesito agua. – I need water.
Tengo que salir ahora.
Tengo que salir ahora. – I have to leave now.
Voy a estudiar mañana.
Voy a estudiar mañana. – I am going to study tomorrow.
Special case: gustar and similar verbs
Verbs like gustar, encantar, interesar, and faltar use a different structure. They take an infinitive or a noun, but the verb agrees with the thing liked, not the person. For beginners, learn the pattern with simple pronouns and verbs.
Me gusta + infinitive
Te encanta + infinitive
Examples with gustar and encantar
Me gusta bailar.
Me gusta bailar. – I like to dance.
Le encanta leer libros.
Le encanta leer libros. – He/she loves to read books.
Negation with infinitives
To make a negative sentence with an infinitive, put no before the conjugated verb. The infinitive itself does not change. This is straightforward for beginners and mirrors English no + verb patterns.
No puedo entrar.
No puedo entrar. – I cannot enter.
No quiero comer eso.
No quiero comer eso. – I don’t want to eat that.
Sequencing actions: after verbs of perception
After verbs of perception like ver, oír, mirar, and escuchar, you can use either the infinitive or a gerund depending on emphasis. For beginners, it’s easiest to use the infinitive when you want to state a full action clearly.
Ver + infinitive
Oír + infinitive
Examples for perception verbs
Vi cantar a María.
Vi cantar a María. – I saw María sing.
Oí decir su nombre.
Oí decir su nombre. – I heard his/her name mentioned.
Common mistakes and how to avoid them
Beginners often make predictable errors. Here are clear tips to avoid them.
1. Forgetting the preposition: After verbs that require para or sin, do not conjugate the next verb. Use the infinitive. Example: Estudio para viajar, not Estudio para viajo.
2. Using a conjugated verb twice: Do not conjugate both verbs. Say Quiero comer, not Yo quiero como.
3. Misusing gustar: Remember that the object liked is the subject of gustar. Say Me gusta bailar, not Yo gusto bailar.
4. Overusing the infinitive after verbs that need different constructions: Some verbs require subjunctive or infinitive with preposition. Focus on the common patterns first and consult a beginner grammar resource for others.
Beginner practice exercises
Fill in the blanks with the correct infinitive form. Answers follow so you can check yourself.
1. Quiero _____ (comer) ahora.
2. Tenemos que _____ (salir) temprano.
3. Me gusta _____ (leer) en la noche.
4. Voy a _____ (llamar) mañana.
5. No puedo _____ (entrar) sin número.
Answers
1. comer
2. salir
3. leer
4. llamar
5. entrar
Practical tips for remembering infinitive usage
Use short mnemonic rules and real-life cues to build habits.
1. After a conjugated verb that shows desire, ability, obligation, or intent, use the infinitive. Think want, can, must = infinitive.
2. After prepositions like para and sin, always use the infinitive. Remember the phrase para + verbo.
3. With perception verbs, use the infinitive to state an observed action simply: Vi + infinitive.
4. Practice with short, useful sentences for daily life: Quiero agua, Tengo que ir, Me gusta bailar.
Everyday realistic examples you will see or use
Menus, schedules, and signs frequently use infinitives because they give instructions or describe actions. Learn these to feel confident in real situations.
Menu: Porciones para compartir – para compartir uses infinitive conceptually.
Sign: Favor de dejar el área limpia – dejar is an infinitive used after the polite phrase favor de.
Form: Motivo de la visita: _____ (visitar) – simple infinitive prompt on forms.
Schedule: Hora de abrir: comenzar a las ocho – comenzar is an infinitive in instructions.
Quick reference cheat sheet
Remember these patterns for fast recognition and production.
Conjugated verb + infinitive: querer, poder, deber, necesitar
Preposition + infinitive: para, sin, antes de, después de
Perception verbs + infinitive: ver, oír
Special verbs like gustar: Me gusta + infinitive
Conclusion
Using infinitives after common verbs is a key beginner skill in Spanish. Focus on memorizing frequent verb + infinitive patterns, learn prepositions that require infinitives, and practice realistic examples like menu items, signs, and short messages. With targeted practice and these clear rules, you will quickly feel comfortable forming basic, correct sentences in everyday Spanish.
