Questions & Answers about Meine Augen sind müde.
Why is the word for "my" meine here instead of mein?
Because Augen (eyes) is plural! In German, possessive words like mein must add an -e ending when they are used with plural nouns in the nominative case.
What is the singular form of Augen?
The singular is das Auge (the eye), which is a neuter noun. To make it plural, you simply add an -n to the end.
Since we are talking about plural eyes, why doesn't the adjective müde get a plural ending?
In German, adjectives only get grammatical endings when they come directly in front of a noun (like in the phrase meine müden Augen). When an adjective comes after a linking verb like sind (are), it stays in its basic dictionary form.