Why Deber Is More Than "Should"
Deber is the verb of duty, but it also gives advice, expresses regret, makes guesses, and talks about debt. Each use has a familiar frame. Learn the frames and the verb stops being confusing. For the everyday sense of necessity, compare with [Tener que] Chunks.
Pattern 1: Debo / Debes + infinitive — Duty
The present tense expresses a real obligation, more formal and moral than tener que.
- Debes descansar más. — You must rest more.
- Debo irme. — I must go.
- Debemos hablar. — We need to talk.
Chunk to learn:
Debo / Debes / Debemos + [infinitive]
Pattern 2: Deberías + infinitive — Advice
The conditional form softens the obligation into a recommendation, like English you should. See Conditional Chunks.
- Deberías probarlo. — You should try it.
- Deberías hablar con ella. — You should talk to her.
- No deberías conducir tan rápido. — You shouldn't drive so fast.
Chunk to learn:
Deberías + [infinitive]
Pattern 3: Debería haber + participle — "Should have"
For regret or criticism about the past. The structure mirrors English should have done.
- Debería haberte llamado. — I should have called you.
- Deberías haber venido. — You should have come.
- No debería haber dicho eso. — I shouldn't have said that.
Chunk to learn:
Debería haber + [past participle]
Pattern 4: Debe de ser — "It must be"
Used to guess. Traditional grammar uses deber de for probability and deber alone for obligation, although many speakers drop the de in casual speech.
- Debe de ser tarde. — It must be late.
- Debe de estar cansado. — He must be tired.
- Debe de ser difícil. — It must be hard.
Chunk to learn:
Debe de + [infinitive] (probability)
Pattern 5: Me debes / Te debo — Money and favors
When deber takes a direct object it means to owe. Te debo una is a friendly way to say you owe someone a favor.
- Me debes veinte euros. — You owe me twenty euros.
- ¿Cuánto te debo? — How much do I owe you?
- Te debo una. — I owe you one.
Chunk to learn:
Te debo + [amount / una]
Pattern 6: Debido a — "Due to"
A formal connector that appears constantly in news, announcements, and emails.
- Debido a la lluvia, cancelaron el partido. — Due to the rain, they cancelled the game.
- Debido a esto, llegué tarde. — Because of this, I arrived late.
- Debido al tráfico, hubo retrasos. — Due to traffic, there were delays.
Chunk to learn:
Debido a + [noun]
Duty, Advice, and Debt
From debo to debido a, the family shows how one root spreads across meanings. Compare with [Poder] Chunks, its modal partner.
Start with deberías… and te debo una. You will use both the next time you speak Spanish.
This post is part of the Spanish Chunk Series — a growing collection of chunk patterns for natural Spanish.