Corro a la cinta de córrer.

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Breakdown of Corro a la cinta de córrer.

• córrer: to run
• la cinta de córrer: the treadmill

Questions & Answers about Corro a la cinta de córrer.

Why is it corro? What form is that?

Corro is the 1st person singular present tense of córrer (to run).

So:

• jo corro = I run / I am running

Catalan often drops the subject pronoun because the verb ending already shows who is doing the action. That is why Corro by itself already means I run.

You could say Jo corro too, but that usually adds emphasis, contrast, or extra clarity.

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Why is there no jo in the sentence?

Because Catalan is a pro-drop language, like Spanish or Italian. The verb ending usually makes the subject clear enough.

• Corro = I run
• Corres = you run
• Corre = he/she runs

So Corro a la cinta de córrer is perfectly natural without jo.

You would add jo mainly if you want to stress it:

• Jo corro a la cinta de córrer, però ell va amb bicicleta.
  I run on the treadmill, but he rides a bike.

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Why does Catalan use a here? English says on the treadmill, not to the treadmill.