Breakdown of Tienes que estar en la oficina al mediodía.
tener
to have
en
in / on / at
estar
to be (location/state)
la oficina
the office
Questions & Answers about Tienes que estar en la oficina al mediodía.
The lesson uses a las for "at" a certain time. Why is it al mediodía here instead of a las mediodía?
Mediodía (noon) is a singular masculine noun. When the preposition a (at) meets the masculine article el (the), they combine into the single word al. We use a las for actual clock hours because the hours themselves are feminine and plural, like a las tres (at three o'clock).
Since this lesson is about using ser to talk about time, why does this sentence use estar?
Why is there a que between tienes and estar?
Is mediodía a combination of two words?