Questions & Answers about Planeta jest daleko.
Because daleko is an adverb, and in Polish you normally use it to say that something is far away:
- Planeta jest daleko. = The planet is far away.
- Dom jest daleko. = The house is far away.
Daleka is an adjective. It would describe a noun, for example:
- daleka planeta = a distant planet
So in this sentence, Polish uses the adverb daleko, not an adjective agreeing with planeta.
Yes, in normal standard Polish, jest is needed.
Polish usually does not omit the present-tense form of to be in ordinary sentences like this. So:
- Planeta jest daleko. = correct
- Planeta daleko. = not the normal full sentence; it may sound incomplete, very colloquial, or stylistically reduced
So if you are learning standard Polish, use jest.
It is nominative singular.
That is because planeta is the subject of the sentence, and subjects are normally in the nominative case in Polish.
Also, planeta is a feminine noun.
So here:
- planeta = nominative singular feminine