until When used as a conjunction in positive sentences expressing the future, until is translated by hasta que + subjunctive: we'll stay here until Carol comes back nos quedaremos aquí hasta que llegue Carol. In negative sentences no is used optionally before the verb: he won't be satisfied until they give him his money back no estará satisfecho hasta que (no) le devuelvan su dinero.:
While grocery shopping, the kids scarf down as many free samples as they can until the employee tells them that the samples are just incentives for people to buy.
