Breakdown of De sobrecalentarse el motor, la alarma sonará inmediatamente.
la
the (feminine)
sonar
to ring / to sound
inmediatamente
immediately
el motor
the engine
la alarma
the alarm
de
if (+ infinitive)
sobrecalentarse
to overheat
Questions & Answers about De sobrecalentarse el motor, la alarma sonará inmediatamente.
Why is De used here instead of Si?
In Spanish, you can create a conditional 'if' clause using De followed by an infinitive. De sobrecalentarse means the exact same thing as Si se sobrecalienta (If it overheats). It is a slightly more formal or technical way to express a condition.
Why does el motor come after sobrecalentarse?
Why is sobrecalentarse reflexive here with the -se attached?
The base verb calentar means to heat something up. When a machine or object heats up on its own (a change of state), Spanish uses the reflexive pronoun se. So sobrecalentar is to overheat something else, while sobrecalentarse means to overheat itself. Because it is an infinitive, the -se attaches directly to the end of the word.
Does this structure only work with the future tense (sonará) in the second half of the sentence?
No. While it pairs perfectly with the future tense here to show a likely outcome, you can also use this De + infinitive structure with the present tense or with commands. For example, you could say De sobrecalentarse el motor, apágalo (If the motor overheats, turn it off).
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