Matt Quinn wrote at 2013-12-04 00:53:14
Because she wants to say that phrase to a single person, "Pulchras" should actually be "Pulchram". Also, "Ferias" should be "Feriam" because it is a singular English sentence structure.
Maria wrote at 2013-12-05 22:45:06
To Matt Quinn:
Please note that the noun "fērĭae" whose genitive case is "fērĭārum" is one of PLURALIA TANTUM NOMINA, i.e. a noun that in Latin has only the plural form, as you should know, if you knew Latin grammar [See Charlton T. Lewis, Charles Short, A Latin Dictionary].
Moreover the adjective "Pulchras" cannot be "Pulchram " in the singular accusative, as it must agree with the noun it refers to, i.e. "ferias" which is just in the accusative plural.
In short, it is clear that you have an approximate knowledge of Latin grammar!