First conditional

Condicional tipo 1


El condicional tipo 1 describe situaciones en el futuro.

(The type 1 conditional describes situations in the future.)

What you’re building: a real future condition

Use this structure when the condition is realistic and the result is a likely future consequence.

Condition (after si) Result Meaning
Si + present (indicative) future (futuro simple) If X happens, Y will happen

Step-by-step: choose the tense correctly

  1. Start with the condition: after si, use present indicative.

    Si firmas el contrato… (If you sign the contract…)

  2. Add the consequence: use simple future.

    …te mudarás pronto. (…you will move soon.)

  3. Keep the meaning “real/possible”: you expect this could truly happen.

The big trap: after si you do NOT use the future

This is the most common mistake for English speakers.

Correct Incorrect Why
Si consultas la inmobiliaria, te mostrarán más opciones. Si consultarás la inmobiliaria, te mostrarán más opciones. Si + present, not future.
Si reformas la cocina, el piso será más caro. Si reformarás la cocina, el piso será más caro. Same rule: present after si.

Mini “formula map”: what goes where

Think of it as two boxes:

  • Box 1 (condition): si + present → Si buscas residencia temporal…

  • Box 2 (consequence): future → …esta será la opción ideal.

Word order: pronouns usually come before the future verb

In the consequence, Spanish places object pronouns before the conjugated verb.

  • Te mostrarán más opciones. (They will show you more options.)

  • Me llamará esta tarde. (He/She will call me this afternoon.)

Self-check in 10 seconds

  1. Do I have si?

  2. Is the verb right after si in the present indicative?

  3. Is the consequence in the simple future?

  4. Am I avoiding future after si?

What you should be able to do now

  • Talk about realistic future plans and their consequences (renting, moving, renovations).

  • Build correct sentences with Si + presentfuture without mixing tenses.

  • Place pronouns naturally: te / me / lo / la + future verb.

  1. It is used for real or possible situations in the future.
  2. Conditional words like "si" must be followed by a verb in the present indicative to express the condition, while the simple future is used to indicate the consequence.
Fórmula (Formula)Condición (Condition)Consecuencia (Consequence)
Si + presente + futuro simple (If + present + simple future)Si firmas el contrato (If you sign the contract)Te mudarás pronto. (You will move soon.)
Si + presente + futuro simple (If + present + simple future)Si reformas la cocina (If you renovate the kitchen)El piso será más caro. (The apartment will be more expensive.)
Si + presente + futuro simple (If + present + simple future)Si consultas la inmobiliaria (If you ask the real estate agency)Te mostrarán más opciones. (They will show you more options.)
Si + presente + futuro simple (If + present + simple future)Si buscas residencia temporal (If you are looking for temporary accommodation)Esta será la opción ideal. (This will be the ideal option.)

Exercise 1: Multiple choice

Instruction: Choose the correct answer

1. Si firmas el contrato de alquiler hoy, te ____ la semana que viene.

If you sign the rental contract today, you ____ next week.

2. Si la vivienda está en buen estado, no ____ la cocina este año.

If the home is in good condition, you ____ the kitchen this year.

3. Si buscas una residencia temporal, esta ____ la opción más cómoda para ti.

If you are looking for a temporary residence, this ____ the most comfortable option for you.

4. Si consultas la inmobiliaria mañana, te ____ pisos disponibles en ese barrio.

If you contact the real estate agency tomorrow, they ____ available apartments in that neighborhood.

Exercise 2: Multiple Choice

Instruction: Choose the correct sentence.

1.
Incorrect mix of tenses: with 'if' + present the consequence must be in the future ('you will move'), not in the conditional ('you would move').
This form uses conditional in the 'if' clause (if you signed) and conditional in the main clause; for type 1 conditional you need 'if' + present + future.
2.
It is future, not conditional; the correct form to express a hypothetical situation would be 'I would rent'.
It is the imperfect past (habitual action in the past), not the simple conditional.

Exercise 3: Rewrite the phrases

Instruction: Rewrite each sentence forming a real conditional sentence in the future: use "If + present simple, + simple future" (e.g.: I pay today. (if) → If I pay today, they will send me the invoice).

Show/Hide translation Show/Hide hints
  1. Hint Hint (Si) Firmas el contrato. Te mudas pronto.
    ⇒ ______________________________________________________________________________________________________________ Example
    Si firmas el contrato, te mudarás pronto.
    (If you sign the contract, you’ll move soon.)
  2. Hint Hint (Si) Reformas la cocina. El piso es más caro.
    ⇒ ______________________________________________________________________________________________________________ Example
    Si reformas la cocina, el piso será más caro.
    (If you renovate the kitchen, the apartment will be more expensive.)
  3. Hint Hint (Si) Consultas la inmobiliaria. Te muestran más opciones.
    ⇒ ______________________________________________________________________________________________________________ Example
    Si consultas la inmobiliaria, te mostrarán más opciones.
    (If you consult a real estate agency, they’ll show you more options.)
  4. Hint Hint (Si) Buscas residencia temporal. Esta es la opción ideal.
    ⇒ ______________________________________________________________________________________________________________ Example
    Si buscas residencia temporal, esta será la opción ideal.
    (If you look for temporary housing, this will be the ideal option.)

Exercise 4: Grammar in action

Instruction: Talk with your partner and decide which flat you will rent if it meets the conditions.

Show/Hide translation
Situation
En la inmobiliaria, comparáis pisos y negociáis condiciones del alquiler.
(At the real estate agency, you compare apartments and negotiate the rental conditions.)

Discuss
  • ¿Qué barrio y qué tipo de vivienda buscáis y por qué? (Which neighborhood and what type of home are you looking for and why?)
  • ¿Qué haréis si el piso está en mal estado o necesita reformar? ¿Y si está en buen estado? (What will you do if the apartment is in bad condition or needs renovating? And if it is in good condition?)

Useful words and phrases
  • el anuncio (the listing)
  • los gastos de comunidad (the condominium fees)
  • firmar el contrato de alquiler (to sign the lease contract)

Use in conversation
  • Si + presente, futuro simple (If + present, simple future)
  • Si + presente, te/lo + futuro simple (If + present, you/it + simple future)
  • Si + presente, nos + futuro simple (If + present, us + simple future)

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This content has been designed and reviewed by the coLanguage pedagogical team: About coLanguage

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Alessia Calcagni

Languages for communication in international enterprises and organizations

Università degli Studi di Modena e Reggio Emilia

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Last Updated:

Friday, 17/04/2026 11:14