Inglés, pregunta formulada por florramirez23, hace 6 meses

What's the specific use of the auxiliary verb DID? *​

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Contestado por julietabriones080
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Respuesta:

In both of these sentence types, did is an auxiliary verb (or “helping verb”) that is followed by a main verb, which carries the real verb meaning. The auxiliary verb (did) is marked for past tense, but the main verb is not. It appears in its base form.

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