Las conjunciones son palabras que sirven de enlace entre las partes de una oración o entre dos oraciones.

(Conjunctions are words that link parts of a sentence or two sentences.)

1. What are these conjunctions for?

  • y / e – add ideas or elements (A and B).
  • pero – contrast ideas (A, but B).
  • o – offer options or alternatives (A or B).
  • así que – show a consequence or result (so …).
  • entonces – show a conclusion or next step (then / so / in that case).

Think: What is the logical relation between your two ideas – addition, contrast, choice, or consequence?

2. y vs e – when do I change to e?

Normally you use y to add:

  • Voy al lago y a la montaña. – I’m going to the lake and the mountain.

You change y → e only before words that sound like they start with “i”:

  • Before i-: e Italia, e inglés, e importante
  • Before hi- (without a spoken consonant): e hijo, e iglesia, e idea
Correct Incorrect Why?
Sol e hijo Sol y hijo hijo sounds like ijo → change to e.
Mapa e inglés Mapa y inglés inglés starts with the sound i- → e.
Mapa y hotel Mapa e hotel hotel starts with the sound j (like jotel) → keep y.
  • It is about the sound, not the spelling.
  • At A2, you can think: “If the next word sounds like it starts with i, use e.”

3. y, pero, o – addition, contrast, option

Ask yourself: What is my intention?

  1. Add things → y / e
    • Llevamos linterna y saco de dormir. – We take a torch and a sleeping bag.
    • Quiero descansar e informarme sobre la ruta. – I want to rest and get information about the route.
  2. Show contrast → pero
    • Quiero hacer senderismo, pero está nublado. – I want to hike, but it’s cloudy.
    • Es tarde, pero no tengo sueño. – It’s late, but I’m not sleepy.
  3. Offer a choice → o
    • ¿Prefieres tienda o bungalow? – Do you prefer a tent or a bungalow?
    • Podemos cenar ahora o después. – We can have dinner now or later.

Typical confusion:

  • If both ideas are true together → use y, not o.
  • If there is no real contrast → use y, not pero.

Compare:

  • Vamos al lago y a la montaña. – We go to both.
  • Vamos al lago o a la montaña. – One of the two, not both (we choose).

4. así que vs entonces – consequence and next step

Both can introduce a result, but they feel a bit different in use.

  1. así que – direct consequence (cause → effect)
    • Hay muchos mosquitos, así que llevamos repelente.
      There are many mosquitoes, so we take repellent.
    • Hace frío, así que cenamos dentro de la tienda.
      It’s cold, so we have dinner inside the tent.
  2. entonces – conclusion / next logical step
    • Si miras hacia este lado, entonces estamos en el norte.
      If you look this way, then we are facing north.
    • Terminamos de cenar y entonces organizamos la ruta.
      We finish dinner and then we organise the route.

A simple way to decide:

  • Can you replace it with English “so (because of that)”? → usually así que.
  • Can you replace it with English “then / in that case / after that”? → usually entonces.
Function Spanish English idea
Consequence (cause → effect) así que so, therefore
Conclusion / next step entonces then, in that case, after that

5. Mini decision guide: which conjunction fits?

When you join two sentences, ask these questions:

  1. Are both ideas simply combined?
    • Yes → use y / e.
  2. Is there a real contrast or something unexpected?
    • Yes → use pero.
  3. Do you offer a choice between A and B?
    • Yes → use o.
  4. Is the second part a consequence of the first?
    • Yes → usually así que.
  5. Is the second part the next step or logical conclusion?
    • Yes → usually entonces.

6. Self-check: can you do this now?

Check these points mentally:

  • I can explain when to use y, pero, o, así que, and entonces.
  • I remember to use e before words that sound like they start with i / hi.
  • I look at the logic between ideas: addition, contrast, option, or consequence.
  • I can join two simple sentences into one, choosing a conjunction that matches my meaning.

If you are unsure, take 2–3 of your own short sentences in English about travel or work, translate them into Spanish, and connect them using these conjunctions. Then check: does the conjunction really show the relation you want?

  1. Y links similar ideas or adds elements.
  2. Pero contrasts two ideas in a sentence.
  3. O shows options or alternatives.
  4. Así que and entonces indicate a consequence or result.
Regla (Rule)Conjunción (Conjunction)Ejemplo (Example)
Unir palabras o frases (Connect words or sentences)YMiremos la luna y las estrellas en el cielo. (Let’s look at the moon and the stars in the sky.)
Contrastar palabras o frases (Contrast words or sentences)PeroQuiero observar el cielo, pero está nublado. (I want to watch the sky, but it is cloudy.)
Ofrecer opciones (Offer options)O¿Miras el norte o el sur? (Are you looking to the north or the south?)
Consecuencia (Consequence)Así queHace sol, así que salimos al campo. (It’s sunny, so we go out to the countryside.)
Conclusión (Conclusion)EntoncesSi miras hacia este lado, entonces estamos en el norte. (If you look this way, then we are in the north.)

Exceptions!

  1. Use e instead of y if the following word begins with "i" or "hi".

Exercise 1: Multiple choice

Instruction: Choose the correct answer

1. En el mapa puedes ver el norte ___ el sur del país.

On the map you can see the north ___ the south of the country.)

2. Esta ruta es larga ___ muy agradable para caminar.

This route is long ___ very pleasant to walk.)

3. Puedes reservar una tienda de campaña ___ un bungalow cerca del río.

You can book a tent ___ a bungalow near the river.)

4. Va a llover, ___ guardamos los sacos de dormir dentro de la tienda.

It's going to rain, ___ we'll keep the sleeping bags inside the tent.)

Exercise 2: Multiple Choice

Instruction: Choose the correct sentence in each group to use conjunctions properly in everyday camping and nature contexts.

1.
"But" is not appropriate here because there is no contrast, just a list of two destinations.
"Or" indicates an alternative, but the sentence suggests we will go to both, not just one.
2.
"But" contrasts ideas; here it does not apply because only options are being offered.
"And" implies addition, but this sentence is offering an alternative, not insisting on both.

Exercise 3: Rewrite the phrases

Instruction: Combine the two sentences into a single sentence using the appropriate conjunction (and, e, but, or, so, then).

Show/Hide translation Show/Hide hints
  1. Hint Hint (pero) Queremos ir de camping. No tenemos tienda.
    ⇒ _______________________________________________ Example
    Queremos ir de camping, pero no tenemos tienda.
    (Queremos ir de camping, pero no tenemos tienda.)
  2. Hint Hint (o) Podemos dormir en un hotel. Podemos dormir en un camping.
    ⇒ _______________________________________________ Example
    Podemos dormir en un hotel o en un camping.
    (Podemos dormir en un hotel o en un camping.)
  3. Hint Hint (y) Llevamos linterna. Llevamos saco de dormir.
    ⇒ _______________________________________________ Example
    Llevamos linterna y saco de dormir.
    (Llevamos una linterna y un saco de dormir.)
  4. Hint Hint (así que) Hace mucho calor. No encendemos el fuego.
    ⇒ _______________________________________________ Example
    Hace mucho calor, así que no encendemos el fuego.
    (Hace mucho calor, así que no encendemos el fuego.)

Exercise 4: Grammar in action

Instruction: In pairs, decide on a night-time activity and explain your plan.

Show/Hide translation
Situation
Estás en un camping con amigos y tenéis una noche libre para organizar.
(You are at a campsite with friends and have one free night to plan.)
Discuss
  • ¿Qué actividades hacéis esta noche en el camping y por qué? (What activities are you doing tonight at the campsite and why?)
  • Tu compañero quiere mirar el cielo, pero tú prefieres caminar. ¿Qué propones? Negociad una opción común y decididla juntos. (Usad conjunciones para unir ideas, contrastar y ofrecer opciones.) (Your partner wants to look at the sky, but you prefer to go for a walk. What do you suggest? Negotiate a shared option and decide together. (Use conjunctions to connect ideas, show contrast, and offer alternatives.))
Useful words and phrases
  • Miramos la luna y las estrellas en el cielo. (We look at the moon and the stars.)
  • Podemos caminar al norte o al sur con el mapa. (We can walk north or south using the map.)
  • Quiero observar el cielo, pero hace frío en la tienda de campaña. (I want to watch the sky, but it’s cold inside the tent.)
Use in conversation
  • y / e para sumar actividades (and / e to add activities)
  • pero para contrastar preferencias (but to contrast preferences)
  • o / así que / entonces para opciones y consecuencias (or / so / then for options and consequences)

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