DELE C1 Spanish Advanced Conditionals: Practice Test & Review
At B2, you learned the three basic si clause types. At C1, the exam tests the full conditional system — the conjunctions that replace si, the nuances of mood selection, and the constructions that express condition without using si at all. These are the structures that appear in formal writing, academic argument, and advanced conversation.
This page gives you a five-part practice quiz: an evaluation set to see where you stand, three practice sets to drill the advanced structures, and a challenge set to confirm mastery. The grammar review below covers the conditional conjunctions, the mood they trigger, the inversion structures, and the difference between real, hypothetical, and counterfactual conditionals.
Advanced conditionals appear in every C1 reading passage that involves argument, negotiation, or formal reasoning. Master the full system and you can handle any conditional sentence the exam throws at you. Ready? Start with the evaluation set below.
Grammar Guide
The Rule
At C1, the conditional system extends beyond the three si clause types. Spanish has a full set of conditional conjunctions that replace si, each with its own nuance and its own mood requirement. It also has inversion structures and infinitive constructions that express condition without si at all. The exam tests whether you can select the right structure for the right context.
The Conditional Conjunctions
These conjunctions express condition and all take the subjunctive. Each has a different nuance.
| Conjunction | Meaning | Nuance | Example |
|---|---|---|---|
| Con tal de que | As long as | Necessary condition | Te lo diré con tal de que me prometas. |
| A menos que | Unless | Negative condition | No iré a menos que me lo pidas. |
| Siempre y cuando | Provided that | Sufficient condition | Iré siempre y cuando no llueva. |
| En caso de que | In case | Hypothetical condition | En caso de que llueva, cancelaremos. |
| A condición de que | On condition that | Formal condition | Aceptaré a condición de que me suban el sueldo. |
| Con que | As long as | Colloquial condition | Con que me lo digas, basta. |
| Salvo que | Unless | Formal negative condition | Salvo que me avise, no iré. |
All seven take the subjunctive. The choice depends on the nuance, not the grammar.
The Nuances
These conjunctions look similar but differ in logical function.
| Conjunction | Logic | Example | Meaning |
|---|---|---|---|
| Con tal de que | The condition must be met | Con tal de que estudies, aprobarás. | As long as you study, you’ll pass. |
| A menos que | The condition must not occur | A menos que estudies, no aprobarás. | Unless you study, you won’t pass. |
| Siempre y cuando | The condition is sufficient | Siempre y cuando estudies, aprobarás. | Provided you study, you’ll pass. |
| En caso de que | The condition might occur | En caso de que estudies, avísame. | In case you study, let me know. |
Con tal de que and siempre y cuando are nearly equivalent. A menos que reverses the logic. En caso de que is precautionary.
En Caso De vs En Caso De Que
En caso de is followed by a noun or infinitive. En caso de que is followed by a clause with the subjunctive.
| Structure | Example | Translation |
|---|---|---|
| En caso de + noun | En caso de lluvia, cancelaremos. | In case of rain, we’ll cancel. |
| En caso de + infinitive | En caso de llegar tarde, avísame. | In case of arriving late, let me know. |
| En caso de que + subjunctive | En caso de que llueva, cancelaremos. | In case it rains, we’ll cancel. |
The que is required when a clause follows. Without que, only a noun or infinitive can follow.
Inversion — De + Infinitive
De plus the infinitive expresses a condition without using si. It is equivalent to si plus the same verb, but more formal.
| Structure | Example | Equivalent si clause |
|---|---|---|
| De + infinitive | De haberlo sabido, habría venido. | Si lo hubiera sabido, habría venido. |
| De + infinitive | De trabajar más, ganarías más. | Si trabajaras más, ganarías más. |
| De + infinitive | De llover, cancelaremos. | Si llueve, cancelaremos. |
De + infinitive is common in formal writing and literary texts.
Como + Subjunctive
Como plus subjunctive expresses a condition with a nuance of warning or hypothesis. It is less common than si but appears in C1 texts.
| Example | Translation |
|---|---|
| Como llueva, no saldremos. | If it rains (and it might), we won’t go out. |
| Como vengas, avísame. | If you come (and you might), let me know. |
| Como no estudies, suspenderás. | If you don’t study, you’ll fail. |
Como + subjunctive is more colloquial than si + indicative and carries a hint of warning.
The Full Conditional System
| Structure | Mood | Example |
|---|---|---|
| Si + present indicative | Indicative | Si llueve, cancelaremos. |
| Si + imperfect subjunctive | Subjunctive | Si lloviera, cancelaríamos. |
| Si + pluperfect subjunctive | Subjunctive | Si hubiera llovido, habríamos cancelado. |
| Con tal de que | Subjunctive | Con tal de que no llueva, iremos. |
| A menos que | Subjunctive | A menos que llueva, iremos. |
| Siempre y cuando | Subjunctive | Siempre y cuando no llueva, iremos. |
| En caso de que | Subjunctive | En caso de que llueva, cancelaremos. |
| De + infinitive | Infinitive | De llover, cancelaremos. |
| Como + subjunctive | Subjunctive | Como llueva, cancelaremos. |
Fixed Expressions
| Expression | Meaning | Note |
|---|---|---|
| Con tal de que | As long as | Necessary condition |
| A menos que | Unless | Negative condition |
| Siempre y cuando | Provided that | Sufficient condition |
| En caso de que | In case | Hypothetical condition |
| A condición de que | On condition that | Formal |
| De + infinitive | If… | Formal inversion |
| Como + subjunctive | If… (warning) | Colloquial |
Common Mistakes
Using the indicative after conditional conjunctions.
Incorrect: Con tal de que estudias, aprobarás.
Correct: Con tal de que estudies, aprobarás.
All conditional conjunctions take the subjunctive.
Confusing con tal de que and a menos que.
Incorrect: Con tal de que no estudies, no aprobarás. (illogical)
Correct: A menos que estudies, no aprobarás.
Con tal de que sets a positive condition. A menos que sets a negative condition.
Using en caso de que with a noun.
Incorrect: En caso de que lluvia, cancelaremos.
Correct: En caso de lluvia, cancelaremos.
En caso de + noun. En caso de que + clause with subjunctive.
Using si with the subjunctive in a real condition.
Incorrect: Si llueva, cancelaremos.
Correct: Si llueve, cancelaremos.
Real conditions use si + present indicative. The subjunctive is not used after si in real conditions.
Quick Decision Chart
| Ask yourself | Answer | Structure |
|---|---|---|
| Am I setting a necessary condition? | Yes | Con tal de que + subjunctive |
| Am I setting a negative condition? | Yes | A menos que + subjunctive |
| Am I setting a sufficient condition? | Yes | Siempre y cuando + subjunctive |
| Am I being precautionary? | Yes | En caso de que + subjunctive |
| Am I writing formally? | Yes | De + infinitive, a condición de que |
| Is this a real condition? | Yes | Si + present indicative |
| Is this a hypothetical condition? | Yes | Si + imperfect subjunctive |
Two Sentences That Show the Difference
Con tal de que estudies, aprobarás.
As long as you study, you’ll pass.
Con tal de que: the condition must be met.
A menos que estudies, no aprobarás.
Unless you study, you won’t pass.
A menos que: the condition must not be missed.
De haberlo sabido, habría venido.
If I had known, I would have come.
De + infinitive: formal inversion of the third conditional.
Si lo hubiera sabido, habría venido.
If I had known, I would have come.
Si + pluperfect subjunctive: the standard form.
Como llueva, no saldremos.
If it rains (and it might), we won’t go out.
Como + subjunctive: colloquial condition with a warning.
En caso de que llueva, cancelaremos.
In case it rains, we’ll cancel.
En caso de que: precautionary condition.
