Learn Hardcore Spanish (Latin America): Mi bicicleta es vieja.

Es comes from the verb ser, which is used for inherent, permanent characteristics. In the sentence Mi bicicleta es vieja, the adjective vieja is describing an intrinsic quality of the bicycle—that it is old by nature—so ser is the correct choice. Estar would be used for temporary or changing states.

Why is the adjective vieja placed after the noun (bicicleta)?

In Spanish, descriptive adjectives typically follow the noun. This standard word order helps to maintain a clear and neutral description. While certain adjectives can shift position to convey nuances or emphasis, in this straightforward statement the adjective comes after the noun.

How do adjectives like vieja agree with their nouns in Spanish?

Adjectives in Spanish must match the noun in both gender and number. Since bicicleta is a feminine singular noun, the adjective must also be feminine and singular, which is why we use vieja. If the noun were plural, for example bicicletas, the adjective would change accordingly to viejas.

What role does mi play in the sentence?

Mi is a possessive adjective meaning my. It indicates that the bicycle belongs to the speaker. In Spanish, the singular possessive mi does not change for gender or number, but if referring to more than one item, it would become mis.

Does the word vieja only refer to the bicycle’s age, or does it imply something more?

In this context, vieja primarily means old, referring to the bicycle’s age as an inherent characteristic. Depending on the situation, calling something vieja can sometimes suggest it is worn out or outdated, but here it simply states that the bicycle has aged.

How would you change the sentence to express that you have multiple bicycles that are old?

To make the sentence plural, you need to adjust the possessive, noun, verb, and adjective for number agreement. Mi bicicleta es vieja becomes Mis bicicletas son viejas. Here, mi changes to mis, bicicleta becomes bicicletas, es is replaced by son (the plural form of ser), and vieja becomes viejas to match the feminine plural noun.