Introduction
Mastering the nuances between desde and desde que is essential for Spanish learners who want to express time relationships accurately. While both terms relate to the concept of since or from, they function differently in sentence structure and convey distinct temporal meanings. Understanding when to use each form will significantly improve your fluency and help you avoid common mistakes that even intermediate learners often make.
Understanding Desde: The Preposition of Time
The word desde functions as a preposition in Spanish, meaning it must be followed by a noun, pronoun, or noun phrase rather than a conjugated verb. When you use desde, you are indicating a starting point in time or space, similar to the English words from or since.
The basic structure with desde follows this pattern:
Desde + time expression (noun phrase)
Consider these examples to see how desde works in practice:
Vivo en Madrid desde 2015.
I have lived in Madrid since 2015.
Trabajo aquí desde enero.
I have worked here since January.
Estudio español desde el año pasado.
I have studied Spanish since last year.
Notice that in each example, desde is followed directly by a time reference that acts as a noun: a year, a month, or a noun phrase. There is no conjugated verb immediately following desde. This is the critical distinction that separates it from desde que.
Common Time Expressions Used with Desde
Spanish speakers frequently combine desde with specific time markers. Learning these common combinations will make your speech sound more natural and fluent:
Desde la mañana (since morning)
Desde hace tres años (for three years, literally since three years ago)
Desde entonces (since then)
Desde siempre (always, since always)
Desde pequeño (since childhood)
Desde el principio (from the beginning)
Here are these expressions in context:
Mi hermana toca el piano desde pequeña.
My sister has played piano since she was little.
Conozco a Juan desde hace cinco años.
I have known Juan for five years.
No como carne desde entonces.
I have not eaten meat since then.
Desde in Spatial Contexts
While this article focuses primarily on temporal uses, it is worth noting that desde can also indicate a starting point in space, meaning from in a physical sense:
Desde mi casa hasta la escuela hay dos kilómetros.
From my house to the school there are two kilometers.
Puedes ver las montañas desde aquí.
You can see the mountains from here.
Understanding Desde Que: The Conjunction of Time
Unlike desde, desde que functions as a conjunction, which means it connects two clauses and must be followed by a subject and a conjugated verb. The phrase desde que translates to since in English, but it introduces a complete clause describing when something began.
The structure with desde que looks like this:
Desde que + subject + conjugated verb
Let us examine some clear examples:
Estoy más feliz desde que vivo en Barcelona.
I have been happier since I live in Barcelona.
No he comido mariscos desde que me enfermé.
I have not eaten seafood since I got sick.
Mi vida cambió desde que conocí a María.
My life changed since I met María.
In each sentence, desde que is followed by a complete clause containing a subject and a verb. This is what distinguishes it fundamentally from desde, which only takes noun phrases.
Verb Tenses with Desde Que
One important aspect of using desde que correctly involves choosing the appropriate verb tense in the clause that follows. Spanish speakers typically use either the present tense or the preterite tense after desde que, depending on whether the action is ongoing or completed:
With ongoing actions, use the present tense:
Ahorro más dinero desde que trabajo en la nueva empresa.
I save more money since I work at the new company.
With completed actions that marked the beginning of something, use the preterite:
Todo es diferente desde que se mudaron.
Everything is different since they moved.
The key is recognizing that the clause after desde que describes the event or situation that marks the starting point of the change or state described in the main clause.
The Key Difference: Noun Phrase vs Complete Clause
The fundamental distinction between desde and desde que comes down to what grammatical structure follows them. This difference is crucial for constructing correct sentences.
Use desde when you want to indicate a point in time using only a time expression:
Estudio medicina desde 2020.
I have studied medicine since 2020.
Use desde que when you need to describe the starting point with a complete action or event:
Estudio medicina desde que terminé la secundaria.
I have studied medicine since I finished high school.
Notice how both sentences convey similar meanings, but the second provides more context by describing what happened at that starting point. The choice between desde and desde que depends on whether you want to simply name a time or describe an event.
Side-by-Side Comparisons
Looking at paired examples can clarify the distinction even further:
Vive solo desde marzo.
He has lived alone since March.
Vive solo desde que su hermano se casó.
He has lived alone since his brother got married.
No bebo café desde el mes pasado.
I have not drunk coffee since last month.
No bebo café desde que el médico me lo prohibió.
I have not drunk coffee since the doctor forbade it.
In the first sentence of each pair, we have a simple time reference. In the second, we have a complete explanation involving a subject and action.
Common Mistakes and How to Avoid Them
Even intermediate learners frequently confuse these two expressions. Understanding the most common errors will help you avoid them in your own Spanish.
Mistake 1: Using Desde with a Conjugated Verb
Incorrect: Soy vegetariano desde leí ese libro.
Correct: Soy vegetariano desde que leí ese libro.
I have been vegetarian since I read that book.
Remember that desde cannot be followed directly by a conjugated verb. When you have a verb, you must use desde que.
Mistake 2: Using Desde Que with Only a Time Expression
Incorrect: Vivo aquí desde que 2018.
Correct: Vivo aquí desde 2018.
I have lived here since 2018.
A year or date by itself is not a clause, so desde que is grammatically incorrect. Simple time expressions require desde.
Mistake 3: Forgetting the Subject After Desde Que
Incorrect: Me siento mejor desde que hacer ejercicio.
Correct: Me siento mejor desde que hago ejercicio.
I feel better since I exercise.
The infinitive hacer is not a conjugated verb with a subject. You need a complete clause with a conjugated verb after desde que.
Advanced Usage and Variations
As you progress in Spanish, you will encounter more sophisticated uses of these expressions that go beyond basic formulas.
Desde Hace vs Desde
Spanish speakers often use desde hace to express duration, meaning for a certain amount of time. While both desde and desde hace indicate a starting point, desde hace emphasizes the duration up to the present:
Vivo en España desde hace tres años.
I have lived in Spain for three years.
This construction is roughly equivalent to saying: I have lived in Spain since three years ago. The hace component adds the sense of time elapsed.
Desde Cuando
When asking questions about time, Spanish uses desde cuándo (since when) to inquire about the starting point:
¿Desde cuándo estudias japonés?
Since when have you studied Japanese?
Estudio japonés desde abril.
I have studied Japanese since April.
Or with desde que:
Estudio japonés desde que visité Tokio.
I have studied Japanese since I visited Tokyo.
Cultural Notes on Time Expression
Spanish-speaking cultures often have different conventions for expressing time relationships. In conversation, native speakers frequently use desde and desde que to emphasize personal history and relationships:
Somos amigos desde la infancia.
We have been friends since childhood.
This type of expression is very common when introducing people or explaining connections, as relationships and shared history hold significant cultural value in Spanish-speaking communities.
Practice Strategies for Mastery
To truly internalize the difference between desde and desde que, consistent practice with focused strategies is essential.
Strategy 1: Identify the Following Element
Before choosing which expression to use, ask yourself: What comes next? Is it a noun phrase or a complete clause with a subject and verb? This simple question will guide you to the correct choice almost every time.
Strategy 2: Create Personal Examples
Write sentences about your own life using both desde and desde que. Personal examples are more memorable and help cement the grammar patterns:
Estudio español desde enero.
Estudio español desde que decidí viajar a México.
Strategy 3: Convert Between Forms
Take a sentence with desde and rewrite it using desde que, or vice versa. This exercise forces you to think about the structural differences:
Original: No como carne desde 2019.
Converted: No como carne desde que vi ese documental.
Strategy 4: Listen for Patterns in Native Speech
When watching Spanish media or listening to native speakers, pay specific attention to how they use these expressions. Notice the contexts where each appears and the grammatical structures that follow.
Conclusion
The distinction between desde and desde que may seem subtle at first, but it represents an important aspect of Spanish grammar that affects clarity and correctness in communication. By remembering that desde takes noun phrases while desde que introduces complete clauses with subjects and verbs, you will navigate this common challenge successfully. With consistent practice and attention to usage in authentic contexts, these expressions will become natural parts of your Spanish repertoire.
