Breakdown of Todavía nos falta comprar el pan para la cena.
Questions & Answers about Todavía nos falta comprar el pan para la cena.
Because faltar here does not mean to be absent in the same way as English we are missing. In this structure, faltar means to be still left to do / to remain.
So:
- Nos falta comprar el pan = We still need to buy the bread / Buying the bread is still left for us to do
Grammatically, the thing that is missing or still left is the subject. Here, the subject is the whole action comprar el pan. Since that action is treated as singular, the verb is falta.
By contrast:
- Faltamos would mean something like we are absent or we are missing.