já que

Causal Já Que

Level 4

Use já que to say 'since' or 'seeing as' when the reason is an obvious fact or a premise everyone already knows.

How It Works

The expression já que is one of the most common ways to express cause in Portuguese. It functions as a subordinating conjunction.

1. Usage and Nuance
It is best translated as 'since,' 'given that,' or 'seeing as.' It is used when the cause is not a surprise to the listener. For example, if you see it is raining, you would say 'Já que está chovendo...' (Since it is raining...) because the rain is an observable fact.

2. Mood and Syntax
One of the most important rules for learners is that já que always takes the Indicative mood. Because it deals with facts and established premises, you never use the subjunctive with it.

3. Position
It is highly flexible. You can use it at the start of a sentence to set the stage, or in the middle to justify a statement:

  • Start: Já que você está aqui, ajude-me. (Since you are here, help me.)
  • Middle: Vou dormir, já que estou cansado. (I'm going to sleep, since I'm tired.)

4. Register
It is neutral and works perfectly in both casual conversation and formal writing. In very formal contexts, you might see visto que or uma vez que, but já que remains the standard choice for daily life.

Examples (5)

  1. Já que você já terminou o trabalho, pode ir para casa.

    Since you've already finished the work, you can go home.

    Word by Word: Already that you already finished the work, you can go to house.

    The speaker treats the finished work as a known fact to justify the permission to leave.

  2. Não vamos à praia, já que está nublado.

    We aren't going to the beach, since it's cloudy.

    Word by Word: Not we go to the beach, already that it is cloudy.

    The cloudiness is the evident reason for the decision.

  3. Já que ninguém perguntou, eu vou falar.

    Since nobody asked, I'm going to speak.

    Word by Word: Already that nobody asked, I go to speak.

    The lack of questions is the premise for the speaker taking the initiative.

  4. Vamos comer fora, já que hoje é seu aniversário.

    Let's eat out, since today is your birthday.

    Word by Word: Let's eat outside, already that today is your birthday.

    The birthday is a known fact used to justify the suggestion.

  5. Já que você insiste, eu aceito o convite.

    Since you insist, I accept the invitation.

    Word by Word: Already that you insist, I accept the invitation.

    The insistence of the other person is the reason for changing the mind.

Common Mistakes

  • Using the subjunctive mood after 'já que'.

    Já que você esteja aqui, vamos conversar.
    Já que você está aqui, vamos conversar.

    Learners often think all conjunctions require the subjunctive. However, 'já que' introduces a fact, so the indicative 'está' must be used.

  • Using 'desde que' to mean 'since' (causal).

    Desde que você é meu amigo, me ajude.
    Já que você é meu amigo, me ajude.

    In English, 'since' can mean time or cause. In Portuguese, 'desde que' is usually for time or conditions. For a known cause, use 'já que'.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

já queLevel 4Causal Já Que

Learn This First

To understand 'já que' (since/now that), a learner needs a solid grasp of basic causal conjunctions like 'porque'. Since 'já que' is used to introduce a cause that is already known to the listener, the learner should be comfortable with basic sentence structures and the use of 'que' as a linking particle.

Words in This Pattern

já que