"Ne, ty hrady velké nejsou."

Translation: No, those castles are not big.

[EricAllard2]

Why not, "No, those are not big castles."?

[endless_sleeper]

The Golden Rule of Duolingo: Translate as closely as possible.

'No, those castles are not big.' = Ne, ty hrady nejsou velké/velké nejsou.

'No, those are not big castles.' = Ne, to nejsou velké hrady.

In another way, in the first sentence, the adjective is connected to the verb, in the second sentence, to the noun.

[DougExner]

I disagree. In the German lessons it is not that way at all. The English doesn't generally come out awkward and strange like this accepted answer. I'll report it.

[FutureOfDenmark]

Why nejsou in the end

[endless_sleeper]

Additional emphasis. We usually put the most important part at the end of the sentence.

[Enya_Small]

Is nejsou a negative?

[CultureSharked]

Yes, nejsou Is a conjugation of 'ne'(no) & 'jsou'(they are). So it's 'they're not'

[goldregenb]

what is the difference between "these" (failed), and those?

[VladaFu]

There are many explanations on the internet. Just search and find stuff like https://learnenglish.britishcouncil.org/en/english-grammar/that-these-and-those

[Petra684410]

The castles or those castles?

[VladaFu]

either

[Marko195]

Unlike Czech, in Serbian the negation of "to be" at the end of the sentence is not possible / is not used, it would be very weird and ungrammatical.

[AgnusOinas]

In Czech, any negated verb (not just "být") can be placed at the end -- it emphasizes the negation. -- "The castles are (really) not big."

[raf1947]

What is the difference between velký and veliký?

[AgnusOinas]

They are equal and the choice is up to the speaker. Some only use "veliký", some only use "velký, some feel that "veliký" is a bit bigger (more intense) than "velký". You can use either of them.

There are a few fixed expressions where only one is used and not the other, for instance "Velká Británie" or "Alexandr Veliký".