Prensamos el cuadernillo, a no ser que la tarlatana siga húmeda.

to remain

Breakdown of Prensamos el cuadernillo, a no ser que la tarlatana siga húmeda.

• a no ser que: unless
• húmedo: wet
• el cuadernillo: the signature (bookbinding)

Questions & Answers about Prensamos el cuadernillo, a no ser que la tarlatana siga húmeda.

Why is siga in the subjunctive?

Because a no ser que means unless, and this expression normally requires the subjunctive in Spanish.

The idea after unless is treated as a possible exception, not as a confirmed fact. So la tarlatana siga húmeda means the tarlatan may still be wet, and that possibility is what stops the action in the main clause.

Also, siga is the present subjunctive form of seguir.

What does a no ser que mean exactly?

It is a fixed expression meaning unless.

A very literal breakdown would be something like if it is not the case that, but learners should really just remember it as one chunk: a no ser que = unless.

It is very commonly followed by the subjunctive:

• a no ser que venga
• a no ser que sea verdad
• a no ser que siga húmeda

Why does the sentence use prensamos instead of a future tense like prensaremos?

Spanish often uses the present tense for procedures, instructions, scheduled next steps, and practical actions, especially in technical or workshop contexts.

So Prensamos el cuadernillo can naturally mean:

• We press the booklet
• We now press the booklet
• Next, we press the booklet

It does not have to mean a general habit. In this kind of context, the present tense often sounds more immediate and natural than the future.