Learn Spanish (Latin America): No tenemos vino en las copas. Nos lo sirven pronto. - We do not have wine in the glasses. They are serving it to us soon.

When you use two object pronouns together, the indirect object (who receives the action, like nos) always comes before the direct object (what is being acted on, like lo). A helpful way to remember this order is "people before things."

Why do both pronouns go before the verb sirven?

With a standard conjugated verb like sirven, object pronouns must go immediately before the verb. You cannot attach them to the end here. They only attach to the end if the verb is an infinitive (like servir), an -ing word (like sirviendo), or a positive command.

What does lo refer to in this sentence?

The pronoun lo means "it" and stands in for vino (wine). Because vino is a masculine, singular noun, we must use the masculine, singular pronoun lo. If they were serving a feminine noun like cerveza, the sentence would change to nos la sirven.

Why does the sentence use copas instead of vasos for glasses?

In Spanish, different types of drinking glasses have specific names. A copa is a glass with a stem, like a wine glass. A vaso is a standard cup without a stem, like you would use for water or juice.