Learn Romanian: El cumpără două dicționare noi.

The number two has different forms depending on the gender of the noun. We use doi for masculine nouns and două for feminine and neuter nouns. Since the word for dictionary (dicționar) is a neuter noun, we must use două.

Wait, if dicționar is neuter, why does it use the feminine plural rules?

Neuter nouns in Romanian are a mix: they behave exactly like masculine nouns in the singular (un dicționar) and exactly like feminine nouns in the plural (două dicționare). Because we are counting more than one, it takes the feminine/neuter plural form două.

Why does the adjective noi come after dicționare?

In Romanian, descriptive adjectives almost always come directly after the noun they describe. Instead of saying "two new dictionaries" like in English, the word order is "two dictionaries new" (două dicționare noi).

Why is the word for "new" spelled noi instead of nou?

Adjectives must match the noun they describe in number (singular or plural). The singular form is nou for a neuter noun, but because we are talking about multiple dictionaries, the adjective changes to its plural form, noi.