C1Spanish · Grammar

Speech register

A lesson from the C1 course: the rule, examples and a 20-sentence test.

Lesson

Formal vs. Informal Style in Spanish (C1)

Hello there! At C1 level in Spanish, it's not just about using grammar correctly, but also mastering the art of adapting your speech style to the context. In Spain, much like in the UK, there are clear distinctions between formal and informal language, which influence vocabulary choices, grammatical structures, and even intonation. Grasping these nuances will help you sound natural and appropriate in any situation.

The main grammatical differences between formal and informal styles often revolve around the choice of pronouns and their corresponding verb forms, ways of making requests or suggestions, and the use of the passive voice and more complex sentence structures.

  • The use of pronouns tú (informal) vs. usted/ustedes (formal).
  • Imperative forms (imperativo) for tú and usted/ustedes.
  • The use of the conditional mood (condicional) for politeness (Quisiera instead of Quiero).
  • The subjunctive mood (subjuntivo) in formal requests/suggestions.
  • The passive voice (ser + participio) vs. constructions with se (impersonal/passive).
  • Future tenses (futuro simple vs. ir a + infinitivo).
  • Formal conjunctions and adverbs (e.g., no obstante, asimismo).
  • Subject-verb inversion (especially in formal writing).
For politeness: Conditional + Infinitive (e.g., Me gustaría hablar)
VerbInformal (tú)Formal (usted)Formal (ustedes)
Hablar (to speak)HablaHableHablen
Comer (to eat)ComeComaComan
Vivir (to live)ViveVivaVivan

Por favor, dirija sus preguntas al ponente.

Please, direct your questions to the speaker.

Watch out! A common pitfall is mixing formal and informal forms within the same conversation. Decide on one style at the outset and stick to it consistently, unless you're intentionally shifting your register.
Memory Trick: Usted/Ustedes commands are always Subjunctive! - remember that the imperative forms for usted and ustedes (both positive and negative) are identical to their Presente de Subjuntivo forms. Easy to recall!

Another area where style plays a crucial role is the passive voice. In formal language (especially in writing and reports), we often use the ser + participio construction to emphasise the agent of the action or to lend an objective tone to the statement. In informal and impersonal styles, you'll more frequently encounter constructions with se.

Las casas son vendidas por la agencia.
Se venden las casas por la agencia.

The ser + participio construction is preferred when the agent of the action is clearly specified (e.g., por la agencia). The se construction is more neutral or used when the agent is unknown or unimportant.

¿Podría indicarme el camino más corto, por favor?

Could you please show me the shortest way?

Also, bear in mind the differences in future tenses: the futuro simple (e.g., La delegación arribará...) is more frequently used in formal announcements and writing, whereas ir a + infinitivo (e.g., Vamos a comer...) is typical of colloquial speech and for expressing immediate future plans or intentions. Finally, formal conjunctions and adverbs like no obstante or asimismo lend elegance and precision to your expression, in contrast to simpler options such as pero or además.

El informe presenta datos preocupantes; no obstante, hay margen de mejora.

The report presents worrying data; nevertheless, there is room for improvement.

By practising these distinctions, you'll gain greater fluency and confidence in using Spanish in any situation, from formal correspondence to casual conversations with friends. ¡Mucha suerte!

Test yourself

20 questions. Answer them all, then check — you'll see what you got right and what to fix.

  1. 1

    Complete the sentence

    No en llegar, la obra empieza a las ocho.

    Don't be late, the show starts at eight.

  2. 2

    Complete the sentence

    La información será enviada correo electrónico certificado.

    The information will be sent via certified email.

  3. 3

    Complete the sentence

    sus trabajos antes del viernes, por favor.

    Hand in your assignments by Friday, please.

  4. 4

    Complete the sentence

    Señor, no en contactarnos si tiene preguntas.

    Sir, please don't hesitate to contact us if you have any questions.

  5. 5

    Complete the sentence

    ¿ indicarme el camino más corto, por favor?

    Could you show me the shortest way, please?

  6. 6

    Complete the sentence

    Les rogamos que su credencial con antelación.

    We kindly ask you to request your credentials in advance.

  7. 7

    Complete the sentence

    Este restaurante por varias guías culinarias.

    This restaurant is recommended by several culinary guides.

  8. 8

    Complete the sentence

    La verdad que el tiempo es oro, debemos aprovecharlo.

    The truth is that time is gold, we have to make use of it.

  9. 9

    Type the missing word

    Se requiere documentación adicional, , se le contactará.

    Additional documentation is required, for this purpose we will contact you.

  10. 10

    Type the missing word

    La investigación por un equipo de expertos.

    The study was conducted by a team of experts.

  11. 11

    Type the missing word

    El proyecto por un equipo multidisciplinar.

    The project was developed by a multidisciplinary team.

  12. 12

    Type the missing word

    pronta respuesta a este asunto.

    Thank you in advance for your prompt reply to this matter.

  13. 13

    Type the missing word

    a los asistentes sobre los cambios en el programa.

    The participants were informed about the changes in the programme.

  14. 14

    Type the missing word

    La conferencia puntualmente a las nueve.

    The conference will begin punctually at nine.

  15. 15

    Put the sentence together — some words are extra

    Look, we're going to eat something quick before the cinema.

  16. 16

    Put the sentence together — some words are extra

    I am addressing you in connection with your recent publication.

  17. 17

    Put the sentence together — some words are extra

    Don't go out without your coat, it's very cold outside.

  18. 18

    Put the sentence together — some words are extra

    Please direct your questions to the speaker.

  19. 19

    Build the missing word from the letters

    Los documentos cuidadosamente por el abogado.

    The documents must be examined carefully by the lawyer.

  20. 20

    Match each word to its meaning

Printable test

The full test as a PDF with an answer key — print it for yourself or for a class.

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