Ο καιρός είναι ασυνήθιστος σήμερα.

to be

Breakdown of Ο καιρός είναι ασυνήθιστος σήμερα.

• σήμερα: today
• ο καιρός: the weather
• ασυνήθιστος: unusual

Questions & Answers about Ο καιρός είναι ασυνήθιστος σήμερα.

Why is there an ο before καιρός?

Ο is the definite article the in the masculine singular nominative form.

Greek usually uses the article with nouns in normal sentences, so ο καιρός is the natural way to say the weather. If you dropped the article and said just καιρός, it would sound less like an ordinary full sentence and more like a headline, note, or dictionary style.

Does καιρός only mean weather?

No. Καιρός is a very common Greek word with more than one meaning. Depending on context, it can mean:

• weather
• time
• season
• the right moment / opportunity

In this sentence, because of σήμερα and the general context, it clearly means weather.

What case is καιρός here?

It is in the nominative singular.

That is the form used for the subject of the sentence, and here ο καιρός is the subject of είναι.

Very roughly:

• ο καιρός = nominative, the weather
• τον καιρό = accusative
• του καιρού = genitive

So in this sentence, ο καιρός is the thing being described as unusual.

Why does ασυνήθιστος end in -ος?