Breakdown of Ad sinistram taberna est, ad dextram autem bibliotheca.
Questions & Answers about Ad sinistram taberna est, ad dextram autem bibliotheca.
Because they follow ad, and ad takes the accusative case.
In this sentence, ad sinistram and ad dextram mean on the left and on the right more literally to the left side and to the right side. Latin often uses ad + accusative for position in expressions like this.
So:
- sinistra = left side
- dextra = right side
- ad sinistram = to/on the left
- ad dextram = to/on the right
Even though English uses on, Latin uses ad here.
They are feminine because they come from feminine nouns:
- sinistra, -ae = left hand / left side
- dextra, -ae = right hand / right side
In this sentence, the words are being used almost like shortened expressions for the left side and the right side, so they stay feminine.
Their forms are:
- sinistram = accusative singular feminine
- dextram = accusative singular feminine
That matches what ad requires.