Questions & Answers about Gamlar myndir eru fallegar.
What is the singular form of myndir?
Why is it just myndir and not myndirnar?
This sentence is talking about old pictures in general, not specific ones. In Icelandic, we use the bare (indefinite) plural myndir for this. If we meant 'the old pictures', we would add the definite ending to make it myndirnar.
Why do both gamlar and fallegar end in -ar?
Adjectives always change to match the gender and number of the noun they describe. Because myndir is a feminine plural noun, the adjectives gamall (old) and fallegur (beautiful) both take the feminine plural ending -ar.
Why do we use eru instead of er?
Er is the singular form meaning 'is', but because we are talking about multiple pictures, we need the plural form of the verb. Eru is used for 'are' when talking about a plural 'they' (the pictures).