No puedes detonar nada sin que yo lo apruebe.

Questions & Answers about No puedes detonar nada sin que yo lo apruebe.

Why is apruebe in the subjunctive here?
The conjunction sin que (meaning without) always triggers the subjunctive. It sets up a condition that has not happened yet or might not happen at all. Since the approval is hypothetical, the verb aprobar takes the subjunctive form apruebe.
Could I just use the infinitive and say sin aprobarlo instead?
Not in this sentence. You use sin plus an infinitive when the same person performs both actions. Because one person is detonating and a different person is approving, there is a change of subject. This requires using sin que followed by a conjugated verb.
Why does the sentence use both No and nada?
In Spanish, when a negative word like nada comes after the verb, you must also place no before the verb. This double negative structure is grammatically required to express that you cannot detonate anything.
Is the pronoun yo strictly necessary before lo apruebe?
It is highly recommended for clarity. The first-person and third-person singular forms of the present subjunctive are identical, so apruebe on its own could refer to multiple different people. Adding yo removes that ambiguity and emphasizes that the permission must come specifically from the speaker.

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