Nel caso suoni la sirena, sgomberate il corridoio.

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Breakdown of Nel caso suoni la sirena, sgomberate il corridoio.

• suonare: to ring
• nel caso: in case
• la sirena: the warning siren

Questions & Answers about Nel caso suoni la sirena, sgomberate il corridoio.

Why is it nel caso here? Does it mean the same as if?

Nel caso means something like in the event that / if it happens that.

In this kind of sentence, it is often short for nel caso in cui:

• Nel caso (in cui) suoni la sirena...

So yes, it overlaps with if, but it sounds a bit more formal and procedural, which fits safety instructions well.

A very common simpler alternative would be:

• Se suona la sirena, sgomberate il corridoio.

That means essentially the same thing, but nel caso sounds a little more official.

Why is it suoni and not suona?

Because nel caso (in cui) normally takes the subjunctive when talking about a possible or hypothetical event.

So:

• suona = indicative
• suoni = subjunctive

Here the siren sounding is not presented as a fact; it is a possible future situation. That is why Italian uses the subjunctive:

• Nel caso suoni la sirena...

This is very natural in formal Italian.

Could I also say Se suona la sirena instead?